Contactor, size 12, 1-pole, DC-3 and 5, 400A auxiliary switch 4NO+4NC DC 220V DC operation DC operation 3TC contactor for switching direct current, 2-pole.The 3TC direct current contactors impress with their maximum performance and compact design and high contact reliability. They are also characterized by a particularly long switching life. Pre-assembled auxiliary switches reduce the complexity of your setup. The devices are approved worldwide (e.g. IEC and UL/CSA).They are available in various sizes, in AC and DC operation, in various voltages and with various auxiliary contacts. The devices can be connected via rails in the main circuit.There are a wide range of accessories for these contactors, such as surge suppressors, auxiliary switches or terminal covers.