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Miniature Circuit Breaker By, Rohini Haridas Assistant Professor, Dept of Electrical Engineering, SSGM College of Engineering,Shegaon

Miniature circuit breaker(encrypted)

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Page 1: Miniature circuit breaker(encrypted)

Miniature Circuit Breaker

By,Rohini Haridas

Assistant Professor,Dept of Electrical Engineering,

SSGM College of Engineering,Shegaon

Page 2: Miniature circuit breaker(encrypted)

MCB (Miniature Circuit Breaker)

Page 3: Miniature circuit breaker(encrypted)

MCB Construction

• Frame of MCB

• Operating Mechanism

• Trip unit of MCB

Page 4: Miniature circuit breaker(encrypted)

Operation of MCB

Page 5: Miniature circuit breaker(encrypted)

power

terminal

Bimetallic

strip

Trip coil

Current Carrying Path

Moving

contact

Fixed

contact

power

terminal

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