Siemens Sirius Innovation 3RT2 3 Pole Contactor, 3NO, 50 A, 22 kW (AC3), 230 V ac Coil. Contact Voltage Rating: 690 V. Pole and Throw Configuration: 3PST. Number Of Auxiliary Contacts: 4. Terminal Type: Screw. Length: 55mm. Width: 173.5mm. Depth: 113.4mm. Minimum Operating Temperature: -25°C. MPN: 3RT2036-1AP04-3MA0