1. 3RA1931-1AA00 is a three-phase contactor from Siemens. It is a size S2 contactor which is used for switching AC/DC motors and other loads.
2. It has a rated operational voltage of 400V AC, a rated operational current of 65A, and a screw-type connection for wiring.
3. This contactor is suitable for use with upstream circuit-breakers, motor-protection switches, and motor-protection circuit-breakers. It has a 3-pole, 1-NO contact design, making it suitable for motor control, air-conditioning systems, lighting control, and other demanding applications.