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Circuit breakers
Industry: Electrical equipment
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Circuit breakers
open/closed indicator
Electrical equipment; Circuit breakers
An indicating means which displays the position (open or closed) of the main contacts.
neutral current transformer
Electrical equipment; Circuit breakers
A current transformer which encircles the neutral conductor; required on circuit breakers with ground-fault protection, when applied on a grounded system.
motor circuit protector
Electrical equipment; Circuit breakers
A recognized component of construction similar to a circuit breaker except with no thermal elements so that it provides shortcircuit protection only.
molded case circuit breaker (MCCB)
Electrical equipment; Circuit breakers
A circuit breaker which is assembled as an integral unit in a supportive and enclosed housing of insulating material, generally 20 to 3000 A in size and used in systems up to 600 Vac and 500 Vdc.
miniature circuit breaker (MCB)
Electrical equipment; Circuit breakers
A small circuit breaker which is assembled as an integral unit in a supportive and enclosed housing of insulating material, rated 150 A or less and used in 120 V, 120/240 V, 240 V and 480Y/277 V ac ...
mechanical operation counter (CDM)
Electrical equipment; Circuit breakers
A mechanical device which indicates the total number of circuit breaker operating cycles.
manual charging handle
Electrical equipment; Circuit breakers
A manually-operated handle which charges the circuit breaker closing springs.
