Contactor, size 4, 2-pole, DC-3 and 5, 75A auxiliary switch 22 (2 NO + 2 NC) AC 230 V 50Hz, 277V 60Hz AC operation 3TC contactor for switching direct current, 2-pole.The 3TC direct current contactors impress with their high performance combined with a compact design and high contact reliability. They are also characterized by a particularly long switching life. The devices are approved worldwide (e.g. IEC and UL/CSA).They are available in AC and DC operation, in various voltages and with various auxiliary contacts.Accessories include arc chambers, magnetic coils and surge suppressors.