5ST3020 5ST Siemens Fault signal contact 1NO+1NC for 5SL, 5SY, 5SP RCBO 5SU1

5ST3 Fault signal contact for MCB, 1 NO+1 NC, for miniature circuit breaker 5SL, 5SY, 5SP RCBO 5SU1, FI 5SV (for 5SU1 handle coupler 5ST3805-1 is required)