Short Circuit Selective Coordination for Low Voltage (1)

8/11/2019 Short Circuit Selective Coordination for Low Voltage (1)

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1

Data Bulletin0100DB0501R3/06

04/2006Cedar Rapids, Iowa, USA

Short Circuit Selective Coordination for Low Voltage CircuitBreakersRetain for future use.

INTRODUCTION The purpose of this data bulletin is to present short circuit selectivecoordination data for various combinations of Square D low voltage circuitbreakers.The scope of this data bulletin encompasses only breaker-to-breakershort circuit selective coordination. Coordination between circuit breakers inthe overload region of their time-current curves, coordination with fuses andthe protection of motors, transformers and other devices, as well ascoordinated ground fault protection, is not dicussed. Conventional selectivecoordination studies using time-current curves are still required to addressthese issues. See the REFERENCE section, on page 5 , for other databulletins on this subject.

This data bulletin is a companion to Enhancing Short Circuit SelectiveCoordination with Low Voltage Circuit Breakers , document number0100DB0403.

Appendix Guide

SELECTIVE COORDINATIONDATA

System designers are accustomed to determining the level of short circuitselective coordination between combinations of low voltage circuit breakersusing trip curves. But using trip curves alone sometimes leads to thedetermination of a selective coordination level that is lower than can actuallybe achieved.

How Trip Curves Are Developed Circuit breaker trip curves are typically developed by conducting interruptiontests at various levels of overload and short circuit current. The timenecessary for the circuit breaker to completely interrupt the current flow isthen measured. In the instantaneous region of the trip curve, it is oftenassumed that the fault clearing time is constant, hence the curve is usually astraight line in that region.

Current Limiting Circuit Breakers Many modern circuit breakers are designed with blow-open contacts and /or other features to quickly clear high fault currents, resulting in clearingtimes that decrease as the current increases, unlike what the conservativelydrawn trip curves may indicate. Even circuit breakers not UL listed orCSA certified as current limiting may exhibit current limiting characteristics.

Dynamic Characteristics of CircuitBreakers

All circuit breakers, when they begin to open, serve to limit the prospectiveflow of current, even if they are not listed or certified as current limiting. Thisis an important factor to consider when two circuit breakers are connected in

Appendix A: Levels of Short Circuit Selective Coordinationfor UL 489 Standard Circuit Breakers

Page 6

Appendix B: Levels of Short Circuit Selective Coordinationfor UL 489 LA/LH Mission Critical CircuitBreakers

Page 38

Appendix C: Levels of Short Circuit Selective Coordinationfor ANSI Low-voltage Power Circuit Breakers

Page 41

Appendix D: A glossary of terms used in this data bulletin. Page 49


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0100DB0501R3/06 Short Circuit Selective Coordination for Low Voltage Circuit Breakers04/2006 Data Bulletin

20052006 Schneider Electric All Rights Reserved 3

electronic trip circuit breakers that have an OFF position on theinstantaneous switch are also equipped with a short time pick-up and delayfunction, and may also be equipped with an instantaneous selectiveoverride function if necessary for the proper functioning of the circuitbreaker.The adjustment of trip settings does not affect any series rating that may be

employed as UL

and CSA

require series ratings tests to be conductedwith the instantaneous trip adjustment set to its highest position.

HOW TO USE THE TABLES In order to use the data presented here, some basic information is needed.

System One-line Diagram A one-line diagram of the system to be studied is absolutely necessary inorder to determine the level of system coordination.

System Voltage While the system voltage, in and of itself, has no impact on selectivecoordination, it does impact circuit breaker selection, which in turn impactscoordination; thus the system voltage needs to be known.

Circuit Ampacity The instantaneous trip characteristics of a circuit breaker may be a function

of the frame or current sensor rating rather than the current rating of thecircuit breaker. However, the current rating required to meet the ampacity ofthe circuit drives the circuit breaker selection, thus it needs to be known.(See NEC Articles 210, 215, 220, 225 and 230.)

Available Short Circuit Current The available short circuit current at each point in the system should bedetermined in order to select circuit breakers with the proper interruptingrating and in turn to determine the level of selective coordination.

Determining Levels of SelectiveCoordination

Based on this information, determine the level of selective coordinationbetween pairs of circuit breakers in the system by finding them in the tablespresented in APPENDIX A on page 6 , APPENDIX B on page 38 andAPPENDIX C on page 41 . The intersection of the upstream anddownstream circuit breakers in the tables lists the level of selectivecoordination between that pair of circuit breakers.

Example Let's consider a 480Y / 277 Vac system with 35 kA available short circuitcurrent. Assume that the system consists of an NF 250 A main lugs lightingpanelboard with single pole EG 35 kAIR rated circuit breakers fed from aJGA36250 circuit breaker with a 35 kA interrupting rating located in anI-Line power panelboard. Determine the level of selective coordinationbetween the upstream JGA circuit breaker and downstream EG circuitbreakers by following these steps.

1. Find the 480 Vac table listing EG downstream circuit breakers inAPPENDIX A , Table 6: on page 20 .

2. Find the column for the EG downstream circuit breaker to be studied.3. Go down the column until the row listing the 250 A JG upstream circuit

breaker is found.4. Read the selective coordination level at the intersection of the column

and row, namely 2.4 kA. This means that the JG upstream circuitbreaker is selectively coordinated with downstream EG circuit breakersup to 2,400 amps.

OPTIMIZING THE SELECTIVECOORDINATION LEVEL

The selective coordination of a circuit breaker based low voltage system canbe optimized using the techniques presented in the Enhancing ShortCircuit Selective Coordination with Low Voltage Circuit Breakers data


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Short Circuit Selective Coordination for Low Voltage Circuit Breakers 0100DB0501R3/06Data Bulletin 04/2006

20052006 Schneider Electric All Rights Reserved4

bulletin and the data presented in APPENDIX A on page 6 , andAPPENDIX C on page 41 . The following is a brief summary of thetechniques more fully presented in the Enhancing Short Circuit SelectiveCoordination with Low Voltage Circuit Breakers data bulletin.

Conduct A Short Circuit Study Conducting a short circuit study may reveal that lower interrupting rated

downstream circuit breakers can be selected, possibly resulting in higherwithstand ratings.

Increase Frame Size By increasing the frame size of the upstream circuit breaker, it may bepossible to increase the selective coordination at that level in the system.

Change Circuit Breaker Type By changing the upstream circuit breaker from a molded case to aninsulated case circuit breaker, it may be possible to increase the selectivecoordination at that level in the system.

Using the Tables If the level of selective coordination between the two circuit breakers initiallyselected is not sufficient for the application, the tables may be used to findan alternate upstream circuit breaker selection that will yield a higher levelof selective coordination. This may involve a larger frame size or different

type of circuit breaker, as mentioned above. This may be done by goingdown the tables to find possible upstream breakers that may deliver ahigher level of selective coordination.

Example Using the same example previously stated under Determining Levels ofSelective Coordination , determine if a higher level of selectivecoordination can be achieved by following these steps:

1. Move down the column for the EG downstream circuit breaker to bestudied, looking for upstream breakers that will yield a higher level ofselective coordination.

2. When the desired level of selective coordination is found, read acrossthe row to find the upstream breaker that will yield this level. In this case,a PG circuit breaker will yield a level of selective coordination of 35,000

amps. This means that the upstream PG circuit breaker is fully selectivewith downstream EG circuit breakers.

CONCLUSION The actual level of selective coordination between pairs of Square D lowvoltage circuit breakers needs to be considered when designing aselectively coordinated low voltage electrical system. This may be done byfinding the pair of circuit breakers in the tables presented in this data bulletinand reading the actual level of selective coordination.If the level of selective coordination is not sufficient for the application, analternate upstream circuit breaker yielding a higher level of selectivecoordination may be found by reading down the table. The alternate may bean electronic trip circuit breaker whose instantaneous trip function can beturned OFF, a larger frame size circuit breaker or a different type of circuit

breaker.A short circuit study to determine the level of short circuit current available atvarious points in the system may allow the selection of circuit breakers witha lower interrupting rating and a higher instantaneous trip level.The data bulletin Enhancing Short Circuit Selective Coordination withLow Voltage Circuit Breakers , document number 0100DB0403, should beconsulted for a further explanation of optimizing techniques for enhancingthe level of short circuit selective coordination.


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Finally, do not neglect to properly adjust circuit breakers in the field as allSquare D low voltage circuit breakers are shipped from the factory with allbut the ampere-rating switch in the lowest position.

REFERENCE Enhancing Short Circuit Selective Coordination with Low VoltageCircuit Breakers Document Number: 0100DB0403Overcurrent Protection Document Number: 0600DB0301Reducing Fault Stress with Zone-selective Interlocking Document Number: 0600DB0001


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APPENDIX A

Levels of Short Circuit SelectiveCoordination for UL 489 StandardCircuit Breakers

The data in the following tables for UL 489 Listed molded and insulatedcase circuit breakers also applies to CSA C22.2 #5-02 and ANCE NMXJ-266 Certified circuit breakers. All data is at 60 Hz. The data does not applyto circuit breakers that are Certified to IEC 60947-2 only or at frequenciesother than 60 Hz.Fully rated and series rated pairs of circuit breakers where there is areasonable expectation of selective coordination are shown. Pairings of thesame frame size or where the upstream circuit breaker might be a currentlimiting circuit breaker are not shown as such pairings would not beexpected to selectively coordinate.Gray shaded cells in the tables indicate series rated combinations. It shouldbe noted that series ratings vary by equipment type, thus publishedinformation regarding the specific type of Square D equipment beingstudied should be consulted for the actual series ratings available in thatequipment.Based on laboratory testing, Square D certifies the following levels ofselective coordination based upon the construction of the specific circuitbreakers referenced as of the date of publication of this document.

Appendix A

Type VoltsDownstream

Circuit Breaker(type or frame size)

Table No. Page No.

UL

240

QO/B 1 6

100150 A 2 8

250 A 3 12

400 A 4 15

6001200 A 5 18

480

100250 A 6 20

400 A 7 24

6001200 A 8 27

600

100250 A 9 29

400 A 10 33

6001200 A 11 36

Table 1: UL 240 Vac QO/B Selective Coordination

Key: Fully Rated Series Rated

UpstreamCircuit Breaker 2

Downstream Circuit Breaker - Type / kAIRMaximum Level of Selective Coordination Shown in kA

Max.Contin-

uousCurrentRating

Type QO/B 3 QO/B-VH 3 QH/B 3 QO/B-GFI/EPDQO/B-VHGFI/

EPD

QO/B-AFI

QO/B-VHAFI

1 Pole120 V

15-70 A

2 Pole120/240 V15-125 A

2 Pole240 V

15-100 A

3 Pole240 V

15-100 A

1 Pole120 V

15-30 A

2 Pole120/240 V15-150 A

3 Pole240 V

15-150 A

1 Pole120 V

15-30 A

2 Pole120/240 V

15-30 A

3 Pole240 V

15-150 A

1 Pole120 V

15-30 A

2 Pole120/240 V

15-60 A

1 Pole120 V

15-30 A

1 Pole120 V

15-20 A

1 Pole120 V

15-20 A

kAIR 1 10 10 10 10 22 22 22 65 65 65 10 10 22 10 22

100/ 150 A

25 HD 4 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3

65

FH 0.9 0.9 0.9

HG 4 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3

NT-H800/250 A 65 65 65

NW-N800/250 A 65 65 65

100 HJ 4 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3

125 HL 4 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3

250 A

10 QB 2.0 2.0 2.0 2.0 2.0 2.0 2.0

25JD 4 2.3 2.3 2.3 2.3 2.3 2.3 2.3 2.3 2.3 22 2.3 2.3

QD 5, 4 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0

65

JG 4 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.4

CG 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2

NT-H800/250 A 65 65 65

PG 65 65 65

PK 65 65 65

QG 5, 4 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1

NW-N800/250 A 65 65 65

100

JJ 4 2.6 2.6 2.6 2.6 2.6 2.6 2.6 2.6

PJ 6 25 25 25

QJ 7, 5, 4, 8 2.1 2.1 2.1 2.1 2.1 2.1 2.1

125 JL 4 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.4


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400 A

42LA9 3.2

LA-MC 18 10 *10

*10

*10

*10

*10

*10

65

DG 65 3.2 3.2

LH 65 3.2 3.2

LH-MC 65 10 *10

*10

*10

*10

*10

*10 65 5.6 5.6

MG11 3.6 65 3.6 3.6

NT-H1200 A 65 65 65

NW-N

2000 A65 65 65

PG 65 65 65

PK 65 65 65

600 A 65

DG 65 4.8 4.8

MG11 5.4 65 5.4 5.4

NT-H1200 A 65 65 65

NW-N2000 A 65 65 65

PG 65 65 65

PK 65 65 65

RG 65 65 65

RK 65 65 651 This is the interrupting rating of the upstream circuit breaker, and therefore, the maximum available short circuit current on the line side of the upstream circuit

breaker.2 Number after NW-x indicates frame size.3 QO plug-on breakers rated 15100 A only.4 Series rating with 35-150 A QO/B-VH 3-pole circuit breakers only.5 Series ratings limited to 70225 A only.6 Series rating at 42 kA with 1530 A QO/B-VH 2- and 3-pole circuit breakers only.7 Rated 208 Y / 120 Vac8 Series rating with 35150 A QO/B-VH 2-pole circuit breakers only.9 Series rating with 15125 A QO circuit breakers only.10 See Appendix B for additional information about LA-MC and LH-MC levels of selective coordination with QO circuit breakers at 208 Y / 120 Vac.

Table 1: UL 240 Vac QO/B Selective Coordination (continued)


UpstreamCircuit Breaker 2

Downstream Circuit Breaker - Type / kAIRMaximum Level of Selective Coordination Shown in kA

Max.Contin-

uousCurrentRating

Type QO/B3

QO/B-VH3

QH/B3

QO/B-GFI/EPD

QO/B-

VHGFI/ EPD

QO/B-AFI

QO/B-VHAFI

1 Pole120 V

15-70 A

2 Pole120/240 V15-125 A

2 Pole240 V

15-100 A

3 Pole240 V

15-100 A

1 Pole120 V

15-30 A

2 Pole120/240 V15-150 A

3 Pole240 V

15-150 A

1 Pole120 V

15-30 A

2 Pole120/240 V

15-30 A

3 Pole240 V

15-150 A

1 Pole120 V

15-30 A

2 Pole120/240 V

15-60 A

1 Pole120 V

15-30 A

1 Pole120 V

15-20 A

1 Pole120 V

15-20 A

kAIR 1 10 10 10 10 22 22 22 65 65 65 10 10 22 10 22


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800 A

125 RL 125 125 125 125 125

200

NT-L 1200 A 9

NT-LF 1200 A 9

NW-L 1600 A 200

NW-LF 1600 A 200

1000 A

50 NT-N 1200 A 50 50

65

NT-H 1200 A 65 65

NW-N 2000 A 65 65

PG 65 65 65

PK 65 65

RG 65 65 65

RK 65 65

100

NT-L1 1200 A 100 100

NW-H 2000 A 100 100

PJ 9 9 9 100 100

RJ 100 100 100 100

125PL 9 9 9 125

RL 125 125 125 125 125

200

NT-L 1200 A 9

NT-LF 1200 A 9

NW-L 1600 A 200

NW-LF 1600 A 200

1200 A

50 NT-N 1200 A 50 50

65

NT-H 1200 A 65 65NW-N 2000 A 65 65

PG 65 65 65

RG 65 65 65

RK 65 65

100

NT-L1 1200 A 100 100

NW-H 2000 A 100 100

PJ 9 9 9 100 100

PK 100 100

RJ 100 100 100 100

125PL 9 9 9 125

RL 125 125 125 125 125

200

NT-L 1200 A 9

NT-LF 1200 A 9NW-L 1600 A 200

NW-LF 1600 A 200

1600 A

65

NW-N 2000 A 65 65

RG 65 65 65

RK 65 65

100NW-H 2000 A 100 100

RJ 100 100 100 100

125 RL 125 125 125 125 125

200 NW-L 1600 A 125 200

Table 2: UL 240 Vac 100150 A Selective Coordination (continued)


Upstream Circuit Breaker 2Downstream Circuit Breaker - Type / kAIR

Maximum Level of Selective Coordination Shown in kA

Maximum

ContinuousCurrentRating

Type EDB ECB EGB EJB FA HD FH HG FJ HJ HL FI

kAIR 1 25 65 65 100 25 25 65 65 100 100 125 200


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1600 A 200 NW-LF 1600 A 125 200

2000 A

65

NW-N 2000 A 65 65

RG 65 65 65

RK 65 65

100NW-H 2000 A 100 100

RJ 100 100 100 100

125 RL 125 125 125 125 125

200NW-L 2000 A 200

NW-LF 2000 A 200

25003000 A

65RG 65 65 65

RK 65 65

100NW-H 3000 A 100 100

RJ 100 100 100 100

125 RL 125 125 125 125 125

200 NW-L 3000 A 200

40005000 A

100 NW-H 6000 A 100 100

200 NW-L 6000 A 2001 This is the interrupting rating of the upstream circuit breaker, and therefore, the maximum available short circuit current on the line side of the upstream circuit

breaker.2 Number after NW-x indicates frame size.3 Rated 208 Y / 120 Vac.4 See Appendix B for additional information about LA-MC and LH-MC levels of selective coordination with E frame circuit breakers.





Maximum


Type EDB ECB EGB EJB FA HD FH HG FJ HJ HL FI

kAIR 1 25 65 65 100 25 25 65 65 100 100 125 200


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Table 3: UL 240 Vac 250 A Selective Coordination




MaximumContinuous

CurrentRating

Type QB QD JD QG JG PG QJ JJ LE LX PJ JL PL KI

kAIR 1 10 25 25 65 65 65 100 100 100 100 100 125 125 200

400 A

42LA 3.6 3.6 3.6 3.6

LA-MC 5.6 5.6

50 NT-N 1200 A 50 50 36 50 50 36

65

DG 3.2 3.2

LH 3.2 3.2 3.2 3.2

LH-MC 5.6 5.6

MG 3.6 3.6 3.6 3.6 3.6 3.6

NT-H 1200 A 65 65 36 65 65

NW-N 1200 A 65 65 36 65 65

PG 65 65 65 65 65 65

PK 65 65 65 65

100

DJ 3.2 3.2

MJ 3.6 3.6 3.6 3.6 3.6 3.6 3.6 3.6

NT-L1 1200 A 9 100 9 9 9

NW-H 1200 A 100 100 100 100 36

PJ 100 100 9 100 9 100 9 9

125 PL 125 125 125 125

200

NT-L 1200 A 9

NT-LF 1200 A 9

NW-L 1200 A 200

NW-LF 1200 A 200

600 A

50 NT-N 1200 A 50 50 36 50 36

65

DG 4.8 4.8MG 65 5.4 5.4 5.4 5.4 5.4

NT-H 1200 A 65 65 36 65 65

NW-N 1200 A 65 65 36 65 65

PG 22 22 65 65 65 65

PK 65 65 65 65

RG 65 65 65 65 51 65 65

RK 65 65 51 65 65

100

DJ 4.8 4.8

MJ 100 5 5.4 5.4 5.4 5.4 5.4

NT-L1 1200 A 9 100 9 9

NW-H 1200 A 100 100 100 100

PJ 100 100 100 9 100 9 9

RJ 100 100 100 43 100 100 100 100

125PL 125 125 125

RL 125 125 125 125

200

NT-L 1200 A 9

NT-LF 1200 A 9

NW-L 1200 A 200

NW-LF 1200 A 200

800 A50 NT-N 1200 A 50 50 36 50 50

65 MG 65 65 7.2 65 7.2 7.2


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800 A

65

NT-H 1200 A 65 65 36 65 65

NW-N 2000 A 65 65 36 65 65

PG 65 65 65 65 65 65

PK 65 65 65 65

RG 65 65 65 65 51 65 65

RK 65 65 51 65 65

100

MJ 100 100 100 7.2 7.2 7.2 7.2

NT-L1 1200 A 9 100 9 9 9

NW-H 2000 A 100 100 100 100 36

PJ 100 100 100 9 100 9 9

RJ 100 100 100 100 100 100 100 100

125PL 125 125 125 125

RL 125 125 125 125 43

200

NT-L 1200 A 9

NT-LF 1200 A 9

NW-L 1600 A 200

NW-LF 1600 A 200

1000 A

50 NT-N 1200 A 50 50 36 50 50

65

NT-H 1200 A 65 65 36 65 65

NW-N 2000 A 65 65 36 65 65

PG 65 65 65 65 65 65

PK 65 65 65 65

RG 65 65 65 65 51 65 65

RK 65 65 51 65 65

100

NT-L1 1200 A 9 100 9 9 9

NW-H 2000 A 100 100 100 100 36

PJ 100 100 100 9 100 9

RJ 100 100 100 100 100 100 100 100

125PL 125 125 125 125

RL 125 125 125 125 43

200

NT-L 1200 A 9

NT-LF 1200 A 9

NW-L 1600 A 200

NW-LF 1600 A 200

1200 A

50 NT-N 1200 A 50 50 36 50 50

65

NT-H 1200 A 65 65 36 65 65

NW-N 2000 A 65 65 36 65 65PG 65 65 65 65 65 65

PK 65 65 65 65

RG 65 65 65 65 51 65 65

RK 65 65 36 65 65

100

NT-L1 1200 A 100 100 100 100

NW-H 1200 A 9 100 9 9

PJ 100 100 100 100 100 100 100

RJ 100 100 100 100 100 100 100 100

125 PL 125 125 125 125





Maximum



kAIR 1 10 25 25 65 65 65 100 100 100 100 100 125 125 200


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1200 A

125 RL 125 125 125 125 43

200

NT-L 1200 A 9

NT-LF 1200 A 9

NW-L 1600 A 200

NW-LF 1600 A 200

1600 A

65

NT-N 1600 A 65 65 36 65 65

RG 65 65 65 51 65 65

RK 65 65 51 65 65

100NW-H 2000 A 100 100 100 100 36

RJ 100 100 100 100 100 100 100

125 RL 125 125 125 125 43

200NW-L 1600 A 200

NW-LF 1600 A 200

2000 A

65

NT-N 1200 A 65 65 36 65 65

RG 51 65 65 51 65 65

RK 65 65 51 65 65

100NW-H 2000 A 100 100 100 100 36

RJ 100 100 100 100 100 100 100

125 RL 125 125 125 125 43

200NW-L 1600 A 200

NW-LF1600 A 200

2500 A

65RG 51 65 65 51 65 65

RK 65 65 51 65 65

100 NW-H 3000 A 100 100 100 100 100RJ 100 100 100 100 100 100 100

125 RL 125 125 125 125 43

200 NW L 3000 A 200

30006000 A100 NW-H 3000 A 100 100 100 100 100

200 NW-L 6000 A 2001 This is the interrupting rating of the upstream circuit breaker, and therefore, the maximum available short circuit current on the line side of the upstream circuit

breaker.2 Number after NW-x indicates frame size.





Maximum



kAIR 1 10 25 25 65 65 65 100 100 100 100 100 125 125 200


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Key: Fully RatedSeriesRated


Maximum Level of Selective Coordination Shown in kAMaximum


Type Q4 LA LA-MC LHLH-MC DG DJ PG LC LE LX PJ PL LI LXI

kAIR 1 42 42 42 65 65 65 100 65 100 100 100 100 125 200 200

600 A

50 NT-N 1200 A 50 50 50 36 50 50

65

DG 5.4 5.4

MG 5.4 5.4 5.4 5.4 5.4

NT-H 1200 A 65 65 65 36 65 65

NW-N 2000 A 65 65 65 36 65 65

PG 22 22 65 65 65

PK 22 22 65 65 65

RG 65 65 65 51 65 65

RK 65 65 65 51 65 65

100

DJ

MJ 5.4 5.4 5.4 5.4 5.4

NT-L1 1200 A 9 9 9 9 9

NW-H 2000 A 100 100 100 100 36

PJ 9 9 9 9

RJ 100 100 100 100 100

125PL 9 9

RL 43 125 125

200

NT-L 1200 A 9 9

NT-LF 1200 A 9 9

NW-L 1600 A 200 200

NW-LF 1600 A 22 22

800 A

50 NT-N 1200 A 50 50 50 36

65

MG 7.2 7.2 7.2 7.2 7.2

NT-H 1200 A 65 65 65 36 65 65

NW-N 2000 A 65 65 65 36 65 65

PG 22 22 65 65 65

PK 22 22 65 65 65

RG 65 65 65 51 65 65

RK 65 65 65 51

100

MJ 7.2 7.2

NT-L1 1200 A 9 9 9 9 9

NW-H 2000 A 100 100 100 100 36

PJ 9 9

RJ 100 100 100

125 PL 9 9RL 43 125 125

200

NT-L 1200 A 9 9

NT-LF 1200 A 9 9

NW-L 1600 A 200 200

NW-LF 1600 A 22 22

1000 A

50 NT-N 1200 A 50 50 50 36 50 50

65

NT-H 1200 A 65 65 65 36 65 65

NW-N 2000 A 65 65 65 36 65 65

PG 22 22 65 65 65


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1000 A

65

PK 22 22 65 65 65

RG 65 65 65 51 65 65

RK 65 65 65 51 65 65

100

NT-L1 1200 A 9 9 9 9

NW-H 2000 A 100 100 100 36

PJ 9 9 9

RJ 100 100

125PL 9 9

RL 43 125 125

200

NT-L 1200 A 9 9

NT-LF 1200 A 9 9

NW-L 1600 A 200 200

NW-LF 1600 A 22 22

1200 A

50 NT-N 1200 A 50 50 50 36 50 50

65

NT-H 1200 A 65 65 65 36 65 65

NW-N 2000 A 65 65 65 36 65 65

PG 22 22 65 65 65

PK 65 65 65 65 65

RG 65 65 65 51 65 65

RK 65 65 65 36 65 65

100

NT-H 1200 A 100 100 100 100 36

NW-H 2000 A 9 9 9 9 9

PJ 100 100 100 100

RJ 100 100 100 100 100

125PL 9 9

RL 43 125 125

200

NT-L 1200 A 9 9

NT-LF 1200 A 9 9

NW-L 1600 A 200 200

NW-LF 1600 A 22 22

1600 A

65

NW-N 2000 A 65 65 65 36 65 65

RG 65 65 65 51 65 65

RK 65 65 65 51 65 65

100NW-H 2000 A 100 100 100 100 36

RJ 100 100 100 100 100

125 RL 43 125 125

200NW-L 1600 A 200 200

NW-LF 1600 A 22 22


Key: Fully Rated SeriesRated

Upstream Circuit Breaker 2 Downstream Circuit Breaker - Type / kAIRMaximum Level of Selective Coordination Shown in kA

MaximumContinuous

CurrentRating


kAIR 1 42 42 42 65 65 65 100 65 100 100 100 100 125 200 200


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2000 A

65

NW-N 2000 A 65 65 65 36 65 65

RG 65 65 65 51 65 65

RK 65 65 65 51 65 65

100NW-H 2000 A 100 100 100 100 36

RJ 100 100 100 100 100

125 RL 43 125 125

200NW-L 2000 A 200 200

NW-LF 2000 A 22 22

2500 A 65 RG 65 65 65 51 65 65

3000 A

200 RK 65 65 65 51 65 65

100NW-H 3000 A 100 100 100 100 100

RJ 100 100 100 100 100

125 RL 43 125 125

200 NW-L 3000 A 200 200

4000 A 100 NW-H 6000 A 100 100 100 100 100 200 200

6000 A 200 NW-L 6000 A 200 2001 This is the interrupting rating of the upstream circuit breaker, and therefore, the maximum available short circuit current on the line side of the upstream circuit





MaximumContinuous

CurrentRating


kAIR 1 42 42 42 65 65 65 100 65 100 100 100 100 125 200 200


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Key:FullyRated

Series Rated




Type DG DJ LC LE LX LI LXI MG MJ PG PK PJ PL NT NT NT NT

kAIR 1 65 100 100 100 100 200 200 65 100 65 65 100 125 50 65 100 200

800 A

50 NT-N 1200 A 50 50 50 50 36 36 36

65

MG 7.2 7.2 7.2 7.2

NT-H 1200 A 65 65 65 65 36 36 36

NW-N 2000 A 65 65 65 65 36 36 36 36

PG 65 65 65 65 22

PK 65 65 65 65 22

RG 65 65 65 65 65 51 51

RK 65 65 65 65 65 51 51

100

MJ 7.2 7.2 7.2 7.2

NT-L1 1200 A 9 9 9 9 9 9

NW-H 2000 A 100 100 100 100 36 36 36

PJ 9 9 9 9 9 9

RJ 100 100 100 100 51 100

125PL 9 9

RL 125 125 43

200

NT-L 1200 A 9 9

NT-LF 1200 A 9 9

NW-L 1600 A 200 200 32

NW-LF 1600 A 22 22 22

1000 A

50 NT-N 1200 A 50 50 50 50 36 36 36

65

NT-H 1200 A 65 65 65 65 36 36 36

NW-N 2000 A 65 65 65 65 36 36 36 36 36PG 65 65 65 65 22

PK 65 65 65 65 22

RG 65 65 65 65 65 51 51

RK 65 65 65 65 65 51 51

100

NT-L1 1200 A 9 9 9 9 9 9

NW-H 2000 A 100 100 100 100 36 36 36

PJ 9 9 9 9 9

RJ 100 100 100 100 43 100

125PL 9 9

RL 125 125 43

200

NT-L 1200 A 9 9

NT-LF 1200 A 9 9

NW-L 1600 A 200 200 32NW-LF 1600 A 22 22 22

1200 A

50 NT-N 1200 A 50 50 50 50 36 36 36

65

NT-L 1200 A 9 9 9 9 9 9 9

NW-N 2000 A 65 65 65 65 36 36 36 36

PG 65 65 65 65 22

PK 65 65 65 65 22

RG 65 65 65 65 65 51 51

RK 65 65 65 65 65 51 51

100 NT-L1 1200 A 100 100 100 100 36 36


19/52


20/52








Type ECB 3 EDB 3 EGB 3 EJB 3 FA FH FJ FI HD HG HJ HL JD JG PG JJ LE LX PJ JL PL KI

kAIR 1 14 18 35 65 18 25 65 200 18 35 65 100 18 35 35 65 65 65 65 100 100 200

100/150 A

18FA 0.9

HD 1.3

35 HG 1.3 1.3

50 NT-N/H800/250 A 50 50 50

65

HJ 1.3 1.3 1.3 1.3

NT-L1 800/250 A 65 65 9

NW-N 800/250 A 65 65 65

100

HL 1.3 1.3 1.3 1.3

NT-L 800/250 A 100 9NT-LF 800/250 A 100 9

NW-H 800/250 A 100 100

150NW-L 800/250 A 150

NW-LF 800/250 A 150

250 A

18 JD 2.3 2.3 2.3 2.3

35JG 2.4 2.4 2.4 2.4

PG 35 22 35 35

50NT-N/H 800/250A 50 50 50

PK 50 50 50

65

JJ 2.6 2.6 2.6 2.6 2.6 2.6 2.6 2.6 2.6

NT-L1 800/250 A 65 65 9

NW-N 800/250 A 65 65 65PJ 65 65 9

100

JL 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7

NT-L 800/250 A 8

NT-LF 800/250 A 9

NW-H 800/250 A 100

PL 9 9 9

150NW-L 800/250 A 150

NW-LF 800/250 A 150

400 A

30LA 3.2 3.2 3.2 3.2 3.2

LA-MC *4 30.0 30.0

35

DG 3.2 3.2 3.2

LH 3.2 3.2 3.2 3.2

LH-MC *4 35.0 35.0

MG 3.6 3.6 3.6 3.6 3.6 3.6 3.6

PG 35 35 35 35 35 35 35

50NT-N/H 1200 A 50 50 50 36 50 50 50

PK 50 50 50 50 50

65 DJ 3.2 3.2 3.2 3.2


21/52



400 A

65

MJ 3.6 3.6 3.6 3.6 3.6 3.6 3.6 3.6

NT-L1 1200 A 65 65 9 9 9 9 9

NW-N 2000 A 65 65 65 65 65 65 36

PJ 65 65 9 9 9 9

100

NT-L 1200 A 9 9 9

NT-LF 1200 A 9 9 9

NW-H 2000 A 36 100 36

PL 9 9 9 9

150NW-L 1600 A 150 150

NW-LF 1600 A 150 150

600 A

35

DG 4.8 4.8 4.8

MG 5.4 5.4 5.4 5.4 5.4 5.4 5.4

PG 35 35 35 35 35 35 35

RG 35 35 35 35 35 35 35

50NT-N/H 1200 A 50 50 50 50 50 50 36

PK 50 50 50 50 50 50

65

DJ 4.8 4.8 4.8 4.8

MJ 5.4 5.4 5.4 5.4 5.4 5.4 5.4 5.4

NT-L1 1200 A 65 65 9 9 9 9 9

NW-N 2000 A 65 65 65 65 65 65 36

PJ 65 65 9 9 9 9

RJ 65 65 65 65 65 65 65

RK 65 65 65 65 65 65 65

100

NT-L 1200 A 9 9 9

NT-LF 1200 A 9 9 9

NW-H 2000 A 100 100 36

PL 9 9 9 9

RL 100 100 43

150NW-L 1600 A 150 150

NW-LF 1600 A 150 150

800 A

35

MG 7.2 7.2 7.2 7.2 7.2 7.2

PG 35 35 35 35 35 35

RG 35 35 35 35 35

50NT-H 1200 A 50 50 50 50 36

PK 50 50 50

65

MJ 7.2 7.2 7.2 7.2 7.2 7.2NT-L1 1200 A 9 9 9 9 9

NW-N 2000 A 65 65 65 65 36

PJ 9 9 9 9

RJ 65 65 65 65 65

RK 65 65 65 65 65




MaximumContinuous

CurrentRating


kAIR 1 14 18 35 65 18 25 65 200 18 35 65 100 18 35 35 65 65 65 65 100 100 200


22/52



800 A

100

NT-L 1200 A 9 9 9

NT-LF 1200 A 9 9 9

NW-H 2000 A 100 100 36

PL 9 9 9 9

RL 100 100 43

150NW-L 1600 A 150 150

NW-LF 1600 A 150 150

1000 A

35PG 35 35 35 35 35 35

RG 35 35 35 35 35

50NT-N/H 1200 A 50 50 50 50 36

PK 50 50 50 50

65

NT-L1 1200 A 9 9 9 9 9

NW-N 2000 A 65 65 65 65 36

PJ 9 9 9 9

RJ 65 65 65 65 65

RK 65 65 65 65 65

100

NT-L 1200 A 9 9 9

NT-LF 1200 A 9 9 9

NW-H 2000 A 100 100 36

PL 9 9 9 9

RL 100 100 43

150NW-L 1600 A 150 150

NW-LF 1600 A 150 150

1200 A

35PG 35 35 35 35 35 35

RG 35 35 35

50NT-N/H 1200 A 50 50 50 50 36

PK 50 50 50 50

65

NT-L1 1200 A 9 9 9 9 9

NW-N 2000 A 65 65 65 65 36

PJ 9 9 9 9

RJ 65 65 65 65 65

RK 65 65 65 65 65

100

NT-L 1200 A 9 9 9

NT-LF 1200 A 9 9 9

NW-H 2000 A 100 100 36

NW-H 3000 A 100 100 100PL 9 9 9 9

RL 100 100 43

150

NW-L 1600 A 150 150

NW-L 3000 A 150 150

NW-LF 2000 A 150 150




MaximumContinuous

CurrentRating


kAIR 1 14 18 35 65 18 25 65 200 18 35 65 100 18 35 35 65 65 65 65 100 100 200


23/52


24/52







MaximumContinuous

CurrentRating

Type LA LA-MC LH LH-MC DG DJ PG LC LE LX PJ PL LI LXI

kAIR 1 30 30 35 35 35 65 35 65 65 65 65 100 200 200

600 A

35

DG 4.8 4.8

MG 5.4 5.4 5.4 5.4 5.4

PG 22 22 35 35 35

RG 35 35 35 35 35 35

50NT-N/H 1200 A 50 50 50 50 36

PK 50 50 50 50

65

DJ

MJ 5.4 5.4 5.4 5.4

NT-L1 1200 A 9 9 9 9 9

NW-N 2000 A 65 65 65 65 36

PJ 9 9 9 9

RJ 65 65 65 65 43

RK 65 65 65 65 51

100

NT-L 1200 A 9 9 9

NT-LF 1200 A 9 9 9

NW-H 2000 A 36 100 100

PL 9 9

RL 43 100 100

150NW-L 1600 A 150 150

NW-LF 2000 A 22 22

800 A

35

MG 7.2 7.2 7.2 7.2 7.2

PG 22 22 35 35 35

RG 35 35 35 35 35 35

50NT-N 1200 A 50 50 50 50 36

PK 50 50 50 50

65

MJ 7.2 7.2 7.2 7.2

NT-L1 1200 A 9 9 9 9 9

NW-N 2000 A 65 65 65 65 36

PJ 9 9 9 9

RJ 65 65 65 65 43

RK 65 65 65 65 51

100

NT-L 1200 A 9 9 9

NT-LF 1200 A 9 9 9

NW-H 2000 A 36 100 100

PL 9 9

RL 43 100 100

150NW-L 1600 A 150 150

NW-LF 2000 A 22 22

1000 A 35PG 22 22 35 22 22

RG 35 35 35 35 51 51


25/52



1000 A

50NT-N/H 1200 A 50 50 50 50 36

PK 50 50 50 50

65

NT-L1 1200 A 9 9 9 9 9

NW-N 2000 A 65 65 65 65 36

PJ 9 9 9 9

RJ 65 65 65 65 43

RK 65 65 65 65 51

100

NT-L 1200 A 9 9 9

NT-LF 1200 A 9 9 9

NW-H 2000 A 36 100 100

PL 9 9

RL 43 100 100

150NW-L 1600 A 150 150

NW-LF 2000 A 22 22

1200 A

35PG 22 22 35 35

RG 35 35 35 35 35

50NT-N/H 1200 A 50 50 50 36

PK 50 50 50

65

NT-L1 1200 A 9 9 9 9

NW-N 2000 A 65 65 65 36

PJ 9 9 9

RJ 65 65 65 43

RK 65 65 65 51

100

NT-L 1200 A 9 9 9NT-LF 1200 A 9 9 9

NW-H 2000 A 36 100 100

NW-H 3000 A 100 100 100

PL 9 9

RL 43 100 100

150

NW-L 1600 A 100 100

NW-L 3000 A 150 150

NW-LF 2000 A 22 22

1600 A

35 RG 35 35 35 35 35 35

65

NW-N 2000 A 65 65 65 65 36

RJ 65 65 65 65 43

RK 65 65 65 65 51

100NW-H 2000 A 36 100 100NW-H 3000 A 100 100 100

RL 43 100 100

150

NW-L 1600 A 100 100

NW-L 3000 A 150 150

NW-LF 2000 A 22 22





Maximum



kAIR 1 30 30 35 35 35 65 35 65 65 65 65 100 200 200


26/52



2000 A

35 RG 35 35 35 35 35 35

65

NW-N 2000 A 65 65 65 65 36

RJ 65 65 65 65 43

RK 65 65 65 65 51

100

NW-H 2000 A 36 100 100

NW-H 3000 A 100 100 100

NW-H 6000 A 100 100 100

RL 43 100 100

150

NW-L 2000 A 100 100

NW-L 3000 A 100 100

NW-L 6000 A 150 150

NW-LF 2000 A 22 22

2500

3000 A

35 RG 35 35 35 35 35

65RJ 65 65 65 65 43

RK 65 65 65 65 51

100

NW-H 3000 A 100 100 100

NW-H 6000 A 100 100 100

RL 43 100 100

150NW-L 3000 A 150 150

NW-L 6000 A 150 150

4000

6000 A

100 NW-H 6000 A 100 100 100

150 NW-L 6000 A 150 1501 This is the interrupting rating of the upstream circuit breaker, and therefore, the maximum available short circuit current on the line side of the upstream circuit






Maximum



kAIR 1 30 30 35 35 35 65 35 65 65 65 65 100 200 200


27/52




Key: Series Rated Series Rated



MaximumContinuous

CurrentRating

Type DG DJ LC LE LX LI LXI MG MJ PG PJ PL RG RJ RLNT

N/H

NT

L1

NT

L

NT

LF

kAIR 1 35 65 65 65 65 200 200 35 65 35 65 100 35 65 100 50 65 100 100

800 A

35

MG 7.2 7.2 7.2 7.2

PG 35 35 35 35

RG 35 35 35 35

50NT-N/H 1200 A 50 50 50 50

PK 50 50 50 50

65

MJ 7.2 7.2 7.2 7.2

NT-L1 1200 A 9 9 9 9

NW-N 2000 A 65 65 65 65 36

PJ 9 9 9 9

RJ 65 65 65 65

RK 65 65 65 65

100

NT-L 1200 A 9 9

NT-LF 1200 A 9 9

NW-H 2000 A 100 100 36 36

PL 9 9

RL 100 100

150NW-L 1600 A 150 150

NW-LF 1600 A 150 150

1000 A

35PG 35 35 35 35 22

RG 35 35 35 35 35 35

50NT-N/H 1200 A 50 50 50 50 36 36

PK 50 50 50 50 22 22

65

NT-L1 1200 A 9 9 9 9 9 9NW-N 2000 A 65 65 65 65 36 36 36

PJ 9 9 9 9 9

RJ 65 65 65 65 43 43

RK 65 65 65 65 65 51

100

NT-L 1200 A 9 9 9

NT-LF 1200 A 9 9 9

NW-H 2000 A 100 100 36 36 36

PL 9 9

RL 100 100 43

150NW-L 1600 A 150 150

NW-LF 1600 A 150 150

1200 A

35PG 35 22 22 22 22

RG 35 51 51 51 51 51

50NT-N/H 1200 A 50 50 50 50 36 36

PK 50 50 50 50 22

65

NT-L1 1200 A 9 9 9 9 9 9

NW-N 2000 A 65 65 65 65 36 36 36

PJ 9 9 9 9 9

RJ 65 65 65 65 43 43

RK 65 65 65 65 65 51


28/52



1200 A

100

NT-L 1200 A 9 9 9

NT-LF 1200 A 9 9 9

NW-H 2000 A 100 100 36 36 36

NW-H 3000 A 100 100 100 100 100

PL 9 9

RL 100 100 43

150

NW-L 1600 A 150 150

NW-L 3000A 150 150

NW-LF 1600 A 150 150

1600 A

35 RG 35 35 35 35 35 35

65

NW-N 2000 A 65 65 65 65 36 36 36 36

RJ 65 65 65 65 43 43

RK 65 65 65 65 65 51

100

NW-H 2000 A 100 100 36 36 36 36

NW-H 3000 A 100 100 100 59 100 100

RL 100 100 43

150

NW-L 2000 A 150 150

NW-L 3000 A 150 150

NW-LF 1600 A 150 150

2000 A

35 RG 35 35 35 35 35 35

65

NW-N 2000 A 65 65 65 65 36 36 36 36

RJ 65 65 65 65 43 43

RK 65 65 65 65 65 51

100

NW-H 2000 A 100 100 36 36 36 36NW-H 3000 A 100 100 100 59 100 100

NW-H 6000 A 100 100 100 77 100 100

RL 100 100 43

150 NW-L 2000 A 150 150

2000 A 150

NW-L 3000 A 150 150

NW-L 6000 A 150 150

NW-LF 2000 A 150 150

25003000 A

35 RG 35 35 35 35 35 35

65RJ 65 65 65 65 43 43

RK 65 65 65 65 65 51

100

NW-H 3000 A 100 100 100 59 100 100

NW-H 6000 A 100 100 100 77 100 100

RL 100 100 43

150NW-L 3000 A 150 150

NW-L 6000 A 150 150

40006000 A100 NW-H 6000 A 100 100 100 77




Key: Series Rated Series Rated



Maximum


Type DG DJ LC LE LX LI LXI MG MJ PG PJ PL RG RJ RL

NT

N/H

NT

L1

NT

L

NT

LF

kAIR 1 35 65 65 65 65 200 200 35 65 35 65 100 35 65 100 50 65 100 100


29/52








Type EDB 3 EGB 3 EJB 3 FA FH FJ 3 HD HG HJ HL FI JD JG PG JJ PJ LE LX JL PL KI

kAIR 1 14kA 18kA 25kA 14 18 25 14 18 25 50 100 14 18 18 25 25 35 35 50 50 100

100/150 A

14FA 0.9

HD 1.3

18FH 1.4

HG 1.3 1.3

25 HJ 1.3 1.3 1.3

35 NT-N 800/250 A 35

50

HL 1.3 1.3 1.3

NT-H 800/250 A 50

NW-N 800/250 A 50

85 NW-H 800/250 A 85

100NW-L 800/250 A 100

NW-LF 800/250 A 100

250 A

14 JD 2.3 2.3

18JG 2.4 2.4 2.4 2.4 2.4 2.4

PG 18 18 18 18

25JJ 3 3 3 3 3 3 3 3

PJ 25 9 25 25

35 NT-N 800/250 A 35

50

JL 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.4

NT-H 800/250 A 50

NW-N 800/250 A 50

PK 22 5085 NW-H 800/250 A 85

100NW-L 800/250 A 100

NW-LF 800/250 A 100

400 A

18

DG 3.2 3.2 3.2 3.2

MG 3.6 3.6 3.6 3.6

PG 18 18 18 18 18 18 18

25

DJ 3.2 3.2 3.2 3.2

LH 3.2 3.2 3.2 3.2 3.2

MJ 3.6 3.6 3.6 3.6 3.6 3.6

PJ 25 9 25 25 25 9 9

35 NT-N 1200 A 35 35 35 35

50NT-H 1200 A 50 50 36

PK 50 50 5085 NW-H 2000 A 85 85

100NW-L 1600 A 100 100

NW-LF 1600 A 100 100

600 A 18

DG 4.8 4.8 4.8 4.8

MG 5.4 5.4 5.4 5.4 5.4 5.4

PG 18 18 18 18 18 18 18

RG 18 18 18 18 18 18 18


30/52


31/52



1200 A

25PJ 9 25 25 25 9 9

RJ 25 25 25 25 25 25

35 NT-N 1200 A 35 35 35 35

50

NT-H 1200 A 50 50 36

NW-N 2000 A 50 50 36

PK 50 50

RL 50 50 43

65 RK 65 65

85NW-H 2000 A 85 85

NW-H 3000A 85 85

100

NW-L 2000 A 100 100

NW-L 3000 A 100 100

NW-LF 1600 A 100 100

1600 A

18 RG 18 18 18 18 18 18

25 RJ 25 25 25 25 25

50NW-N 2000 A 50 50 36

RL 50 50

65 RK 51 65

85NW-H 2000 A 65 85

NW-H 3000 A 85 85

100

NW-L 2000 A 85 100

NW-L 3000 A 100 100

NW-LF 1600 A 100 100

2000 A

18 RG 18 18 18 18 18 18

25 RJ 25 25 25 25 25 25

50NW-N 2000 A 50 50 36

RL 50 50 43

65 RK 51 65

85 NW-H 2000 A 65 85

2000 A

85 NW-H 3000 A 85 85

100

NW-L 2000 A 85 100

NW-L 3000 A 100 100

NW-LF 2000 A 100 100

2500 A

18 RG 18 18 18 18 18

25 RJ 25 25 25 25 25 25

50 RL 50 43 4365 RK 51 51

85 NW-H 3000 A 65 65

100 NW-L 3000 A 100 100

3000 A85 NW-H 3000 A 85 85

100 NW-L 3000 A 100 100




MaximumContinuous

CurrentRating


kAIR 1 14kA 18kA 25kA 14 18 25 14 18 25 50 100 14 18 18 25 25 35 35 50 50 100


32/52



40006000 A85 NW-H 6000 A 85 85


breaker.2 Number after NW-x indicates frame size.3 Rated 600 Y / 347 Vac




MaximumContinuous

CurrentRating


kAIR 1 14kA 18kA 25kA 14 18 25 14 18 25 50 100 14 18 18 25 25 35 35 50 50 100


33/52







MaximumContinuous

CurrentRating

Type PG DG LA LH DJ PJ LC LE LX PL LI LXI

kAIR 1 18 18 22 25 25 25 35 35 35 50 100 100

600 A

18

DG 4.8

MG 5.4 5.4 18 18

PG 18 18 18 18

RG 18 18 18 18 18

25

DJ 4.8

MJ 5.4 5.4 5.4 5.4

PJ 9 9 9 9

RJ 25 25 25 25 25

35 NT-N 1200 A 35 35 35 35

50

NT-H 1200 A 36 50 50

NW-N 2000 A 36 35 50

PK 22 22 22

RL 43 50 50

65 RK 65 65 65 65 65 65

85 NW-H 2000 A 85 85

100NW-L 1600 A 100 100

NW-LF 1600 A 22 22

800 A

18

MG 7.2 7.2 7.2 7.2

PG 18 18 18 18

RG 18 18 18 18 18

25

MJ 7.2 7.2 7.2 7.2 7.2

PJ 9 9 9 9 9

RJ 25 25 25 25 25 2535 NT-N 1200 A 35 35 35 36

50

NT-H 1200 A 36 50 50

NW-N 2000 A 36 50 50

PK 22 22

RL 43 50 50

65 RK 65 65 65 65 65

85 NW-H 2000 A 85 85

100NW-L 1600 A 100 100

NW-LF 1600 A 22 22

1000 A

18PG 18 18 18 18

RG 18 18 18 18 18

25PJ 9 9 9 9

RJ 25 25 25 25 25

35 NT-N 1200 A 35 35 35 36

50

NT-H 1200 A 50 36 50 50

NW-N 2000 A 36 50 50

PK 22 22

RL 43 50 50


34/52



1000 A

65 RK 65 65 65 65 65

85NW-H 2000 A 85 85

NW-H 3000 A 85 85

100

NW-L 1600 A 100 100

NW-L 3000 A 100 100

NW-LF 1600 A 22 22

1200 A

18PG 18 18 18 18

RG 18 18 18 18 18

25PJ 9 9 9 9

RJ 25 25 25 25 25

35 NT-N 1200 A 35 35 35 36

50

NT-H 1200 A 36 50 50

NW-N 2000 A 36 50 50

PK 22 22

RL 43 50 50

65 RK 65 65 65 65 65

85NW-H 2000 A 85 85

NW-H 3000 A 85 85

100

NW-L 1600 A 100 100

NW-L 3000 A 100 100

NW-LF 1600 A 22 22

1600 A

18 RG 18 18 18 18 18

25 RJ 25 25 25 25 25

50 NW-N 2000 A 36 50 50RL 43 50 50

65 RK 65 65 65 65 65

85NW-H 2000 A 85 85

NW-H 3000 A 85 85

100

NW-L 1600 A 100 100

NW-L 3000 A 100 100

NW-LF 1600 A 22 22

2000 A

18 RG 18 18 18 18 18

25 RJ 25 25 25 25 25

50NW-N 2000 A 36 50 50

RL 43 50 50

65 RK 65 65 65 65 65

85 NW-H 2000 A 85 85NW-H 3000 A 85 85

100

NW-L 2000 A 100 100

NW-L 3000 A 100 100

NW-LF 2000 A 22 22





Maximum



kAIR 1 18 18 22 25 25 25 35 35 35 50 100 100


35/52



2500 A

18 RG 18 18 18 18 18

25 RJ 25 25 25 25 25

50 RL 43 50 50

65 RK 65 65 65 65 65

85 NW-H 3000 A 85 85

100 NW-L 3000 A 100 100

3000 A85 NW-H 3000 A 85 85

100 NW-L 3000 A 100 100

40006000 A

85 NW-H 6000 A 85 85







Maximum



kAIR 1 18 18 22 25 25 25 35 35 35 50 100 100


36/52




Key:FullyRated

SeriesRated




Type

DG DJ LC LE LX LI LXI MG MJ PG PJ PK RG RJ RL RKNT NT

N H

kAIR 1 18 25 35 35 35 100 100 18 25 18 25 50 18 25 50 65 35 50

800 A

18

MG 7.2 7.2 7.2 7.2

PG 18 18 18 18 18

RG 18 18 18 18 18 18

25

MJ 7.2 7.2 7.2 7.2

PJ 9 9 9 9 9

RJ 25 25 25

35 NT-N 1200 A 35 35 35

50

NT-H 1200 A 50 50

NW-N 2000 A 50 50 36

PK 22 22

RL 50 50

65 RK 65 65 65 65 65

85 NW-H 2000 A 85 85

100NW-L 1600 A 100 100

NW-LF 1600 A 22 22

1000 A

18PG 18 18 18 18 18

RG 18 18 18 18 18 18

25PJ 9 9 9 9 9

RJ 25 25 25 25 25 25

35 NT-N 1200 A 35 35 35 36

50

NT-H 1200 A 50 50 36

NW-N 2000 A 50 50 36 36 36PK 22 22

RL 50 50 43

65 RK 65 65 65 65 65 65

85NW-H 2000 A 85 85

NW-H 3000 A 85 85

100

NW-L 1600 A 100 100

NW-L 3000 A 100 100

NW-LF 1600 A 22 22

1200 A

18PG 18 18 18 18 18

RG 18 18 18 18 18 18

25PJ 9 9 9 9 9 9

RJ 25 25 25 25 25 25

35 NT-N 1200 A 35 35 35 36

50

NT-H 1200 A 50 50 36

NW-N 2000 A 50 50 36 36 36

PK 22 22

RL 50 50 43


37/52



1200 A

65 RK 65 65 65 65 65 65

85NW-H 2000 A 85 85 36

NW-H 3000 A 85 85 85

100

NW-L 1600 A 100 100 32

NW-L 3000 A 100 100 100

NW-LF 1600 A 22 22 22

1600 A

18 RG 18 18 18 18 18 18

25 RJ 9 9 9 9 9 9

50NW-N 2000 A 50 50 36 36

RL 50 50 43

65 RK 65 65 65 65 65

85NW-H 2000 A 85 85

NW-H 3000 A 85 85

100

NW-L 1600 A 100 100

NW-L 3000 A 100 100

NW-LF 1600 A 22 22

2000 A

18 RG 18 18 18

25 RJ 9 9 9

50NW-N 2000 A 50 50 36 36 36

RL 50 50 43

65 RK 65 65 65 65 65

85NW-H 2000 A 85 85

NW-H 3000 A 85 85

100

NW-L 2000 A 100 100

NW-L 3000 A 100 100

NW-LF 2000 A 22 22

2500 A

18 RG 18 18 18 18 18 18

25 RJ 9 9 9 9 9 9

50 RL 50 50 43

65 RK 65 65 65 65 65

85 NW-H 3000 A 85 85

100 NW-L 3000 A 100 100

3000 A85 NW-H 3000 A 85 85

100 NW-L 3000 A 100 100

4000

6000 A

85 NW-H 6000 A 85 85




Key: FullyRated

SeriesRated


MaximumContinuous

CurrentRating

Type

DG DJ LC LE LX LI LXI MG MJ PG PJ PK RG RJ RL RK NT NTN H

kAIR 1 18 25 35 35 35 100 100 18 25 18 25 50 18 25 50 65 35 50


38/52



APPENDIX B

Levels of Short Circuit SelectiveCoordination for UL 489 LA/LH MissionCritical Circuit Breakers

The following data for UL 489 Listed LA and LH Mission Critical circuitbreakers also applies to CSA C22.2 #5-02 Certified circuit breakers. Alldata is at 60 Hz. The data does not apply to circuit breakers that areCertified to ANCE NMX J-266, or IEC 60947-2 only, or at frequenciesother than 60 Hz.Based on laboratory testing, Square D certifies the following levels ofselective coordination based upon the construction of the specific circuitbreakers referenced as of the date of publication of this document.

Table 12: UL 208 Y / 120 Vac QO/B 1550 A Downstream Circuit Breakers


UpstreamCircuit Breaker

Downstream Circuit Breaker - Type / Ampacity / Voltage Rating / Number of Poles / kAIRMaximum Level of Selective Coordination Shown in kA

Max.Contin-

uousCurrentRating

Type QO/B

15 A 20 A 30 A 40 A 50 A

1 Pole

120 V

2 Pole

120/240 V

3 Pole

240 V

1 Pole

120 V

2 Pole

120/240 V

3 Pole

240 V

1 Pole

120 V

2 Pole

120/240 V

3 Pole

240 V

1 Pole

120 V

2 Pole

120/240 V

3 Pole

240 V

1 Pole

120 V

2 Pole

120/240 V

3 Pole

240 VkAIR 1 10 kAIR

200 A

42 LA-MC

18 2 18 2 16 2 18 2 18 2 10 2 72 10 2 6.5 2 7 7 6 6 6 5.5

225 A 18 2 18 2 18 2 18 2 18 2 16 2 11 2 18 2 82 10 10 7.5 10 10 7

250 A 18 2 18 2 18 2 18 2 18 2 18 2 18 2 18 2 14 2 10 10 10 10 10 9

400 A 18 2 18 2 18 2 18 2 18 2 18 2 18 2 18 2 18 2 10 10 10 10 10 10

200 A

65 LH-MC

18 2 18 2 16 2 18 2 18 2 10 2 72 10 2 6.5 2 7 7 6 6 6 5.5

225 A 18 2 18 2 18 2 18 2 18 2 16 2 11 2 18 2 82 10 10 7.5 10 10 7

250 A 18 2 18 2 18 2 18 2 18 2 18 2 18 2 18 2 14 2 10 10 10 10 10 9

400 A 18 2 18 2 18 2 18 2 18 2 18 2 18 2 18 2 18 2 10 10 10 10 10 101 This is the interrupting rating of the upstream circuit breaker, and therefore, the maximum available short circuit current on the line side of the upstream circuit

breaker.2 The Panelboard in which the QO circuit breaker is located is fully rated 10 kA and series rated 18 kA.

Table 13: UL 208 Y / 120 Vac QO/B 60100 A Downstream Circuit Breakers

Key: FullyRated

Series Rated


Downstream Circuit Breaker - Type / Ampacity / Voltage Rating / Number o f Poles / kAIRMaximum Level of Selective Coordination Shown in kA

Max.Continuous

Current Rating

Type QO/B

60 A 70 A 80 A 90100 A

1 Pole120 V

2 Pole120/240 V

3 Pole240 V

1 Pole120 V

2 Pole120/240 V

3 Pole240 V

2 Pole120/240 V

3 Pole240 V

2 Pole120/240 V

3 Pole240 V

kAIR 1 10 kAIR

200 A

42 LA-MC

52 62 52 52 62 52 5 5 5 5

225 A 8 2 10 2 6.5 2 72 10 2 62 8 6 6 6

250 A 10 2 10 2 82 10 2 10 2 7.5 2 10 7.5 10 7.5400 A 10 2 10 2 10 2 10 2 10 2 10 2 10 10 10 10

200 A

65 LH-MC

52 62 52 52 62 52 5 5 5 5

225 A 8 2 10 2 6.5 2 72 10 2 62 8 6 6 6

250 A 10 2 10 2 82 10 2 10 2 7.5 2 10 7.5 10 7.5

400 A 10 2 10 2 10 2 10 2 10 2 10 2 10 10 10 101 This is the interrupting rating of the upstream circuit breaker, and therefore, the maximum available short circuit current on the line side of the upstream circuit

breaker.2 The Panelboard in which the QO circuit breaker is located is fully rated 10 kA and series rated 18 kA.


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Table 14: UL 208 Y / 120 Vac QO/B-VH 1550 A Downstream Circuit Breakers




Max.Contin-

uousCurrentRating

Type QO/B-VH

15 A 20 A 30 A 40 A 50 A

1 Pole120 V

2 Pole120/240 V

3 Pole240 V

1 Pole120 V

2 Pole120/240 V

3 Pole240 V

1 Pole120 V

2 Pole120/240 V

3 Pole240 V

1 Pole120 V

2 Pole120/240 V

3 Pole240 V

1 Pole120 V

2 Pole120/240 V

3 Pole240 V

kAIR 1 22 kAIR

200 A

42 LA-MC

22 22 16 22 22 10 7 10 6.5 7 7 6 6 6 5.5

225 A 22 22 18 22 22 16 11 22 8 11 18 7.5 10 18 7

250 A 22 22 18 22 22 18 22 22 14 22 18 10 12 18 9

400 A 22 22 18 22 22 18 22 22 18 22 22 18 22 22 18

200 A

65 LH-MC

22 22 16 22 22 10 7 10 6.5 7 7 6 6 6 5.5

225 A 22 22 18 22 22 16 11 22 8 11 18 7.5 10 18 7

250 A 22 22 18 22 22 18 22 22 14 22 18 10 12 18 9

400 A 22 22 18 22 22 18 22 22 18 22 22 18 22 22 181

This is the interrupting rating of the upstream circuit breaker, and therefore, the maximum available short circuit current on the line side of the upstream circuitbreaker.

Table 15: UL 208 Y / 120 Vac QO/B-VH 60100 A Downstream Circuit Breakers

Key:FullyRated

Series Rated



Max.Continuous

Current Rating

Type QO/B-VH

60 A 70 A 80 A 90100 A

1 Pole120 V

2 Pole120/240 V

3 Pole240 V

1 Pole120 V

2 Pole120/240 V

3 Pole240 V

2 Pole120/240 V

3 Pole240 V

2 Pole120/240 V

3 Pole240 V

kAIR 1 22 kAIR

200 A

42 LA-MC

5 6 5 5 6 5 5 5 5 5

225 A 8 13 6.5 7 10 6 8 6 6 6

250 A 10 13 8 10 11 7.5 11 7.5 10 7.5

400 A 22 22 18 22 22 18 22 18 22 18

200 A

65 LH-MC

5 6 5 5 6 5 5 5 5 5

225 A 8 13 6.5 7 10 6 8 6 6 6

250 A 10 13 8 10 11 7.5 11 7.5 10 7.5

400 A 22 22 18 22 22 18 22 18 22 181 This is the interrupting rating of the upstream circuit breaker, and therefore, the maximum available short circuit current on the line side of the upstream circuit

breaker.


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Table 16: UL 480 Y / 277 Vac ED Downstream Circuit Breakers



Downstream Circuit Breaker - Type / Ampacity / kAIRMaximum Level of Selective Coordination Shown in kA

Max.

Contin-uousCurrentRating

Type ED

15 A 20 A 30 A 40 A 50100A

kAIR 1 18 kAIR

200 A

30 LA-MC

18 10 6 6 6

225 A 18 14 8 7 7

250 A 18 18 18 10 8

400 A 18 18 18 18 18

200 A

35 LH-MC

18 10 6 6 6

225 A 18 14 8 7 7

250 A 18 18 18 10 8

400 A 18 18 18 18 181 This is the interrupting rating of the upstream circuit breaker, and therefore, the maximum available short circuit current on the line side of the upstream circuit

breaker.

Table 17: UL 480 Y / 277 Vac EG Downstream Circuit Breakers



Downstream Circuit Breaker - Type / Ampacity / kAIRMaximum Level of Selective Coordination Shown in kA

Max.Contin-

uousCurrentRating

Type EG

15 A 20 A 30 A 40 A 50100A

kAIR 1 35 kAIR

200 A

30 LA-MC

18 10 6 6 6

225 A 18 14 8 7 7

250 A 18 18 18 10 8

400 A 18 18 18 18 18

200 A

35 LH-MC

18 10 6 6 6225 A 18 14 8 7 7

250 A 18 18 18 10 8

400 A 18 18 18 18 181 This is the interrupting rating of the upstream circuit breaker, and therefore, the maximum available short circuit current on the line side of the upstream circuit

breaker.


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APPENDIX C

Levels of Short Circuit SelectiveCoordination for ANSI Low VoltagePower Circuit Breakers

The data in the following tables for ANSI C37.13 and C37.50, UL 1066Listed, low voltage power circuit breakers also applies to CSA C22.2 #31-M89 Certified low voltage power circuit breakers. All data is at60 Hz. The data does not apply to circuit breakers that are UL 489 Listed,or Certified to IEC 60947-2 only, or at frequencies other than 60 Hz.Fully rated pairs of circuit breakers where there is a reasonable expectationof selective coordination are shown. Pairings of the same frame circuitbreakers are not shown, as such pairings would not be expected toselectively coordinate.Based on laboratory testing, Square D certifies the following levels ofselective coordination based upon the construction of the specific circuitbreakers referenced as of the date of publication of this document.

Appendix C

Type VoltsDownstream

Circuit Breaker(frame size)

Table No. Page No.

ANSI

240

800 A

18 41

480 19 42

600 20 43

240

1600 A

21 44

480 22 45

600 23 46

240

2000 A

24 47

480 25 47

600 26 48

Table 18: ANSI 240 Vac 800 A Selective Coordination



MaximumContinuous

CurrentRating

Type NT-N1 NW-N1 NW-H1 NW-H2 NW-H3 NW-L1 NW-L1F

kAIR 1 42 42 65 85 100 200 200

800 A 42 NW-N1 1600 A 42

1600 A

42 NW-N1 1600 A 42

65 NW-H1 3200 A 65

85 NW-H2 3200 A 85

100

NW-H3 1600 A

NW-H3 3200 A 100

200NW-L1 1600 A

NW-L1 3200 A 200 200

2000 A

65NW-H1 2000 A 65

NW-H1 3200 A 65

85

NW-H2 2000 A 85

NW-H2 3200 A 85

NW-H2 5000 A 85

100

NW-H3 2000 A 77

NW-H3 3200 A 77

NW-H3 5000 A 77

200

NW-L1 2000 A 32 32

NW-L1F 2000 A 22 22

NW-L1 3200 A 200 200

NW-L1 5000 A 200 200

3200 A

65 NW-H1 3200 A 65

85NW-H2 3200 A 85

NW-H2 5000 A 85

100NW-H3 3200 A 77

NW-H3 5000 A 77

200NW-L1 3200 A 200 200

NW-L1 5000 A 200 200


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4000 A

85 NW-H2 5000 A 85

100 NW-H3 5000 A 77

200 NW-L1 5000 A 200 200

5000 A

85 NW-H2 5000 A 85

100 NW-H3 5000 A 77

200 NW-L1 5000 A 200 2001 This is the interrupting rating of the upstream circuit breaker, and therefore, the maximum available short circuit current on the line side of the upstream circuit


Table 18: ANSI 240 Vac 800 A Selective Coordination (continued)


MaximumContinuous

Current

Rating


kAIR 1 42 42 65 85 100 200 200






kAIR 1 42 42 65 85 100 200 200

800 A 42 NW-N1 1600 A 42

1600 A 42

NW-N1 1600 A 42

NW-H1 3200 A 65

NW-H2 3200 A 85

NW-H3 3200 A 85

NW-L1 3200 A 200 200

2000 A

65NW-H1 2000 A 65

NW-H1 3200 A 65

85

NW-H2 2000 A 85

NW-H2 3200 A 85

NW-H2 5000 A 85

100

NW-H3 2000 A 77

NW-H3 3200 A 77

NW-H3 5000 A 77

200

NW-L1 2000 A 32 32

NW-L1F 2000 A 22 22

NW-L1 3200 A 200 200

NW-L1 5000 A 200 200

3200 A

65 NW-H1 3200 A 65

85NW-H2 3200 A 85

NW-H2 5000 A 85

100NW-H3 3200 A 77

NW-H3 5000 A 77

200NW-L1 3200 A 200 200

NW-L1 5000 A 200 200

4000 A

85 NW-H2 5000 A 85

100 NW-H3 5000 A 77

200 NW-L1 5000 A 200 200


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5000 A

85 NW-H2 5000 A 85

100 NW-H3 5000 A 77



Table 19: ANSI 480 Vac 800 A Selective Coordination (continued)


MaximumContinuous

Current

Rating


kAIR 1 42 42 65 85 100 200 200




MaximumContinuous

CurrentRating

Type NW-N1 NW-H1 NW-H2 NW-H3 NW-L1 NW-L1F

kAIR 1 42 65 85 85 130 130

1600 A

65 NW-H1 3200 A 65

85 NW-H2 3200 A 85

85NW-H3 3200 A 85

NW-L1 3200 A 130 130

2000 A

65NW-H1 2000 A 65

NW-H1 3200 A 65

85

NW-H2 2000 A 85

NW-H2 3200 A 85

NW-H2 5000 A 85

85

NW-H3 2000 A 85

NW-H3 3200 A 85

NW-H3 5000 A 85

130

NW-L1 2000 A 35 35

NW-L1F 2000 A 24 24

NW-L1 3200 A 130 130

NW-L1 5000 A 130 130

3200 A

65 NW-H1 3200 A 65

85NW-H2 3200 A 85

NW-H2 5000 A 85

85NW-H3 3200 A 85

NW-H3 5000 A 85

130NW-L1 3200 A 130 130

NW-L1 5000 A 130 130

4000 A

85 NW-H2 5000 A 85

85 NW-H3 5000 A 85

130 NW-L1 5000 A 130 130

5000 A

85 NW-H2 5000 A 85

85 NW-H3 5000 A 85




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MaximumContinuous

CurrentRating


kAIR 1 42 65 85 100 200 200

2000 A

65NW-H1 2000 A 65

NW-H1 3200 A 65

85

NW-H2 2000 A 85

NW-H2 3200 A 85

NW-H2 5000 A 85

100

NW-H3 2000 A 77

NW-H3 3200 A 77

NW-H3 5000 A 77

200

NW-L1 2000 A 32 32

NW-L1F 2000 A 22 22

NW-L1 3200 A 200 200

NW-L1 5000 A 200 200

3200 A

65 NW-H1 3200 A 65

85NW-H2 3200 A 85

NW-H2 5000 A 85

100NW-H3 3200 A 77

NW-H3 5000 A 77

200NW-L1 3200 A 200 200

NW-L1 5000 A 200 200

4000 A

85 NW-H2 5000 A 85

100 NW-H3 5000 A 77

200 NW-L1 5000 A 200 200

5000 A

85 NW-H2 5000 A 85

100 NW-H3 5000 A 77




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MaximumContinuous

CurrentRating


kAIR 1 42 65 85 100 200 200

2000 A

65NW-H1 2000 A 65

NW-H1 3200 A 65

85

NW-H2 2000 A 85

NW-H2 3200 A 85

NW-H2 5000 A 85

100

NW-H3 2000 A 77

NW-H3 3200 A 77

NW-H3 5000 A 77

200

NW-L1 2000 A 32 32

NW-L1F 2000 A 22 22

NW-L1 3200 A 200 200

NW-L1 5000 A 200 200

3200 A

65 NW-H1 3200 A 65

85NW-H2 3200 A 85

NW-H2 5000 A 85

100NW-H3 3200 A 77

NW-H3 5000 A 77

200NW-L1 3200 A 200 200

NW-L1 5000 A 200 200

4000 A

85 NW-H2 5000 A 85

100 NW-H3 5000 A 77

200 NW-L1 5000 A 200 200

5000 A

85 NW-H2 5000 A 85

100 NW-H3 5000 A 77




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MaximumContinuous

CurrentRating


kAIR 1 42 65 85 85 130 130

2000 A

65NW-H1 2000 A 65

NW-H1 3200 A 65

85

NW-H2 2000 A 85

NW-H2 3200 A 85

NW-H2 5000 A 85

85

NW-H3 2000 A 85

NW-H3 3200 A 85

NW-H3 5000 A 85

130

NW-L1 2000 A 32 32

NW-L1F 2000 A 22 22

NW-L1 3200 A 130 130

NW-L1 5000 A 130 130

3200 A

65 NW-H1 3200 A 65

85NW-H2 3200 A 85

NW-H2 5000 A 85

85NW-H3 3200 A 85

NW-H3 5000 A 85

130NW-L1 3200 A 130 130

NW-L1 5000 A 130 130

4000 A

85 NW-H2 5000 A 85

85 NW-H3 5000 A 85

130 NW-L1 5000 A 130 130

5000 A

85 NW-H2 5000 A 85

85 NW-H3 5000 A 85




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MaximumContinuous

CurrentRating

Type NW-H1 NW-H2 NW-H3 NW-L1 NW-L1F

kAIR 1 65 85 100 200 200

3200 A

65 NW-H1 3200 A 65

85NW-H2 3200 A 85

NW-H2 5000 A 85

100NW-H3 3200 A 77

NW-H3 5000 A 77

200NW-L1 3200 A 200 200

NW-L1 5000 A 200 200

4000 A

85 NW-H2 5000 A 85

100 NW-H3 5000 A 77

200 NW-L1 5000 A 200 200

5000 A

85 NW-H2 5000 A 85

100 NW-H3 5000 A 77





MaximumContinuous

CurrentRating


kAIR 1 65 85 100 200 200

3200 A

65 NW-H1 3200 A 65

85NW-H2 3200 A 85

NW-H2 5000 A 85

100NW-H3 3200 A 77

NW-H3 5000 A 77

200NW-L1 3200 A 200 200

NW-L1 5000 A 200 200

4000 A

85 NW-H2 5000 A 85

100 NW-H3 5000 A 77

200 NW-L1 5000 A 200 200

5000 A

85 NW-H2 5000 A 85

100 NW-H3 5000 A 77




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MaximumContinuous

CurrentRating


kAIR 1 65 85 85 130 130

3200 A

65 NW-H1 3200 A 65

85NW-H2 3200 A 85

NW-H2 5000 A 85

85NW-H3 3200 A 85

NW-H3 5000 A 85

130NW-L1 3200 A 130 130

NW-L1 5000 A 130 130

4000 A

85 NW-H2 5000 A 85

85 NW-H3 5000 A 85

130 NW-L1 5000 A 130 130

5000 A

85 NW-H2 5000 A 85

85 NW-H3 5000 A 85




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insulating material, generally 20 to 3000 A in size and used in systems up to600 Vac and 500 Vdc.NMX(Norma Mexicana X) Mexican safety standards. Note to Tech Pubs:This is different than the definition in your glossary, which is incorrect.selective coordination Localization of an overcurrent condition to restrictan outage to the circuit or equipment affected, accomplished by the choice

of overcurrent protective devices and their ratings or settings. (NEC 100 -Definitions)trip curve A graphical representation of the response of a circuit breakerto current over a period of time.UL See Underwriters Laboratories Inc.Underwriters Laboratories Inc. (UL ) An independent, not-for-profitstandards development, product safety testing and certificationorganization.


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Schneider Electric USA

Documents

Short Circuit Selective Coordination for Low Voltage (1)