Circuit breakers

Circuit breakers

Industry: Electrical equipment

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Circuit breakers

Overload delay

Electrical equipment; Circuit breakers

The length of time the circuit breaker will carry a sustained low-level overcurrent before initiating a trip signal.

Transformer

Electrical equipment; Circuit breakers

A static device with primary winding, connected in series with the conductor (bus) carrying the current to be measured or controlled within the switchgear.

Provides continuous temperature rise status of the wiring for a period of time both before and after the device trips. This allows the circuit breaker to respond to a series of overload conditions ...

Thermal-magnetic circuit breaker

Electrical equipment; Circuit breakers

A general purpose term for circuit breakers that use bimetals and electromagnetic assemblies to provide both thermal and magnetic overcurrent protection.

Rating plug

Electrical equipment; Circuit breakers

A component which plugs into the full-function electronic trip unit, establishing the maximum continuous current rating of the circuit breaker.

Racking interlock

Electrical equipment; Circuit breakers

An interlock to prevent racking of a drawout circuit breaker when the enclosure door is open by not allowing the racking crank to be inserted into the circuit breaker.