Letter Mo

Molded Case Circuit Breaker
A circuit breaker enclosed in an insulated housing. In the United
States, molded case circuit breakers conform to NEMA AB-1
and UL 489 specifications.


Molded Case Switch

A switch enclosed in the same type of insulated housing as a
molded case circuit breaker. Siemens molded case switches
employ the same operating mechanism as thermal-magnetic
and magnetic only circuit breakers. A preset instantaneous
function is factory installed to allow the switch to trip and
protect itself at a high fault current, but the switch provides no
thermal overload protection or short circuit protection.

Motor (Electric)
A device that transforms electrical energy into mechanical
energy.

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