Siemens 3RT1955-5AR31 U 480V Three-Phase Contactor

Siemens 3RT1955-5AR31 is a withdrawable drive (coil) module for the 3RT105/3RT145 contactors, designed for a 440–480 V AC control supply at 50/60 Hz with options for Standard or Economy operating mechanisms. It features screw-terminal connections and a nominal weight of about 0.6 kg. The coil specifications include a 300 VA pick‑up consumption with a power factor of 0.9 and a holding power of 5.8 VA (holding PF ≈ 0.8), with control voltages listed as 440–480 V AC for 50/60 Hz, and 440–480 V DC variants as applicable. This accessory enables withdrawal-type coil operation within Siemens' SIRIUS motor-contactor line, for reliable energizing of three‑phase motor loads in industrial automation.