Contactor relay, 44E, DIN EN 50011, 4 NO + 4 NC, screw terminal AC operation 24 V AC 50/60 Hz Auxiliary contactor 3TH4 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. The devices are climate-resistant, have a high contact reliability and are suitable for use worldwide thanks to the corresponding approvals (e.g. IEC and UL/CSA). The 3TH4 contactor relays are available with AC or DC operation in various versions with 8 or 10 poles. Available accessories include surge suppressors, time-delay blocks and coupling links.