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-1-
SCHRACK TECHNIK GMBHSeybelgasse 13, A - 1230 Wien, TELEFON +43 1/866 85-0E-MAIL [email protected], INTERNET www.schrack.at
MY series moulded case circuit breakerThe manufacturer assumes no responsibility for damages resulting fromthe non-application or incorrrect application of the instruction provided herein
Tools:Phillips screwdriverHex wrenchHex key
3PMY1
Terminals
Type
3P3P
6(M8)6(M8x16)
6(M10x30)MY2MY3
Fixing
4(M4x45)4(M4x45)4(M6x75)
MY1-AF typesMY2-AF types
MY3-AF typesThermal current Ir fixed and short circuit current Ii fixed at 10xIrMY.1-AF:Ir: 25...125AMY.2-AF:Ir: 160, 200, 250AMY.3-AF:Ir: 315, 400A
Poles
-2-
Dimensions of Circuit breaker MY1, MY2
Un
de
r-vo
ltag
e r
elea
se
Mountingdimensions
Overalldimensions
phase dividers
Un
de
r-vo
ltag
e r
elea
se
Dimension MY1 MY2CEFGG1HH1H2H3H4LL1L2WW1W2W3AB
Ød
855123
17,57,567862557
1552551369030--
30130,54,5x6
102512323
11,5103,51272455
16536014410535
1407535
1265
Mountingdimensions
Overalldimensions
Dimension MY3C
EFGG1HH1H2H3H4
LL1L2WW1AB
Ød
128
89663112
1071623865
2574592241504844
1947
C1 174
H5 4,5
Dimensions of Circuit breaker MY3
phase dividers
-3-
ON
OFF
tripped
push to trip
ON
OFF
1 2
3
4
Danger: Do not operate circuit breaker with wet hands
Operation of circuit breaker
reset
tripped
-4-
Connection and safe distances
A BCircuit Breaker
25 50
Distance tosurrounding parts
MY1
MY2 25
25
50
100
20
20
20
C1 C2
MY3
25
25
25
Line
Load
Line
Load
Note: Only one Line-Load feed direction is allowed (see drawing).
-5-
Installation of phase dividers and cover
-6-
2
Internal Accessories & Installation MY1MY1ZAN11L
MY1ZAT11L
MY1ZS230R
Auxiliary Contact "normal" left
Auxiliary Contact "tripped" left
Shunt Release right
For mounting accessories, switch MCCBin position "ON" , then remove cover
0,8Nm
Pull out baffle plate at correspondingside and turn as shownto enable free accessfor wiring ofaccessories
1
MY1ZAN11L
MY1ZAT11L4
MY1ZS230R
4
3
1 2
5
Plug in accessories :Note: Maximimum accessories -one left and one right can be mounted
Re-attach cover
4
3
-7-
Internal Accessories & Installation MY2
0,8Nm
1
MY2ZAN11L
MY2ZAT11L
MY2ZS230R
Auxiliary Contact "normal" left
Auxiliary Contact "tripped" left
Shunt Release right
For mounting accessories, switch MCCBin position "ON" , then remove cover1 2
2
3
MY2ZAN11L
MY2ZAT11L4
MY2ZS230R
4
3
Plug in accessories :Note: Maximimum accessories -one left and one right can be mounted
4
Pull out baffle plate at correspondingside and turn as shownto enable free accessfor wiring ofaccessories
5Re-attach cover
-8-
Internal Accessories & Installation MY3MY3ZAN11L
MY3ZAT11L
MY3ZS230R
Auxiliary Contact "normal" left
Auxiliary Contact "tripped" left
Shunt Release right
For mounting accessories, switch MCCBin position "tripped" ,then remove cover
1
2
3
3
MY3ZAN11L
MY3ZAT11L4
MY3ZS230R
0,8Nm
4
21
Plug in accessories :Note: Maximimum accessories -one left and one right can be mounted
4
Pull out baffle plate at correspondingside and turn as shownto enable free accessfor wiring ofaccessories
5Re-attach cover