Siemens Sentron 3VA - Application Example: Electrical Interlocking of Two 3 VA UL Molded Case Circuit Breakers with Undervoltage Releases

Technical specifications
6.1 Circuit diagrams
3VA molded case circuit breakers with UL and IEC certification
Manual, 01/2019, L1V30435333-01
403
6.1.3
Application example: Electrical interlocking of two 3VA UL molded case circuit
breakers with undervoltage releases
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
Note
In the case of supply system voltage > 480 V AC, the undervoltage release UVR must
not be connected to phases L1 and L3. 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.