SIEMENS auxiliary switch, on the front, 3 NO + 1 NC, .1/.2, .3/.4, .3/.4, .3/.4, current path: 1 NC, 1 NO, 1 NO, 1 NO screw terminal, for contactors 3RT2 and contactor relays 3RH2
SIEMENS function module star-delta (wye-delta), consisting of lateral basic module and two coupling modules, time range 0.05-60 s, 24-240 V AC/DC, 50/60 Hz, varistor for attenuation of the contactor coils integrated, for contactors 3RT20
