10 Terms
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Circuit breakers
Industry: Electrical equipment
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Circuit breakers
Push-to-open button
Electrical equipment; Circuit breakers
A button for manually opening the circuit breaker.
Sensor
Electrical equipment; Circuit breakers
The current sensing element within the circuit breaker which provides the sensing function for that circuit breaker.
Secondary disconnect contacts
Electrical equipment; Circuit breakers
An electrical plug-on connector in the secondary (control) circuit between a drawout circuit breaker and its cradle in the switchboard or switchgear.
Safety shutter
Electrical equipment; Circuit breakers
A device that closes to block access to the main disconnects when the circuit breaker is in the disconnected, test or withdrawn position.
Restraint interface module (RIM)
Electrical equipment; Circuit breakers
A component which allows zoneselective interlocking communication between Square D full-function electronic trip systems, add-on ground-fault modules and zero-sequence ground-fault relays.
Residual ground-fault sensing
Electrical equipment; Circuit breakers
A means of providing equipment groundfault protection utilising sensors on each individual phase.
Remote reset after fault (RES)
Electrical equipment; Circuit breakers
A component which resets the overcurrent trip switch (SDE) and the mechanical operator after tripping.
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