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Electrical interlocking of two 3VA molded case circuit breakers with undervoltage releases

NOTE

The undervoltage release UVR must not be connected to phases L1 and L3 for 690 V AC applications. In this case, it is connected to phase L1 and the N conductor or to a control voltage supply up to maximum 480 V AC.

Q 1

Molded case circuit breaker 1

UVR 1

Undervoltage release in molded case circuit breaker 1

AUX 1

Auxiliary switch in molded case circuit breaker 1

Q 2

Molded case circuit breaker 2

UVR 2

Undervoltage release in molded case circuit breaker 2

AUX 2

Auxiliary switch in molded case circuit breaker 2

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