Application Example - Siemens SENTRON 3VA1 Manual

Technical specifications
6.1 Circuit diagrams
6.1.3

Application example

Electrical interlocking of two 3VA molded case circuit breakers with undervoltage releases
Q 1
UVR1
AUX1
Q2
UVR2
AUX2
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.
564
Molded case circuit breaker 1
Undervoltage release in molded case circuit breaker 1
Auxiliary switch in molded case circuit breaker 1
Molded case circuit breaker 2
Undervoltage release in molded case circuit breaker 2
Auxiliary switch in molded case circuit breaker 2
3VA molded case circuit breakers with IEC certificate
Manual, 03/2019, A5E03603177010-03