3RT2027-1BB44

The 3RT2027-1BB44 is a Siemens SIRIUS 3RT20 series S0-size three-pole power contactor. The control coil uses a 24V DC power supply, with a rated operating current (AC-3) of 32A, and can handle 400V switching loads up to 15kW. Unlike the standard model, this model has two sets of normally open and two sets of normally closed auxiliary contacts built into the main body, providing multiple signals simultaneously for start feedback, fault monitoring, or interlocking, reducing the wiring time required for additional auxiliary contact blocks. The body depth is slightly greater than the standard model due to the increased number of auxiliary contacts. It has an IP20 front protection rating, a rated insulation voltage of 690V for both main and auxiliary circuits, and a mechanical life of 10 million operations, making it suitable for motor control circuits requiring a large number of auxiliary signal points.