Siemens AG Relays - Contactors (Electromechanical) 3RT20181AK643MA0

The 3RT2018-1AK64-3MA0 is a three-pole power contactor for AC-3 applications up to 7.5 kW at 400 V, with a size S00 and screw terminals. It features a built-in auxiliary switch block with 2 normally open and 2 normally closed contacts, designed for 110 V AC, 50 Hz or 120 V AC, 60 Hz control voltage. The contactor supports an operating altitude up to 2000 m and ambient temperatures from -25 °C to +60 °C. Its main circuit has a rated insulation voltage of 690 V AC, with a surge voltage resistance of 6 kV. The mechanical service life is rated at 10 million switching cycles, and the contactor meets IEC 60947-4-1 for mirror contact functionality. The protection class is IP20, and it is suitable for safety-related switching off applications.