The Siemens contactor relay 73E with 7NO + 3NC contacts. The auxiliary contactor 3TH4 used for switching the control signals in the control circuit. The SIRIUS 3TH4 contactor relays have standard-compliant terminal designations and a reliable connection technology. Thanks to the multiplication of outputs, simultaneous switching of up to 10 auxiliary circuits is possible. The contacts are designed with positively driven operation for safety applications as well as SUVA versions.
