5ST3021-2
Reference : 5ST3021-2
Fault signal contact with test and acknowledgment key 2 NO for miniature circuit breaker 5SL, 5SY, 5SP RCBO 5SU1, FI 5SV (for 5SU1 handle coupler 5ST3805-1 is required)
Reference : 5ST3021-2
Fault signal contact with test and acknowledgment key 2 NO for miniature circuit breaker 5SL, 5SY, 5SP RCBO 5SU1, FI 5SV (for 5SU1 handle coupler 5ST3805-1 is required)