Siemens 3RT1015-1BB42 Industrial Three-Phase Contactor

Siemens 3RT1015-1BB42 is a compact S00-size, three‑pole power contactor with a 24 V DC coil, rated for AC‑3 operation at 400 V and 7 A (3 kW), making it well suited for starting and running small three‑phase motors in control panels. The unit includes three normally open main contacts plus a single auxiliary contact (NC) for signaling or interlocking, and uses screw-terminal connections for secure wiring. As part of the Sirius 3RT family, it is designed for easy panel integration and reliable motor switching; when selecting this device, verify that your control circuitry can supply 24 V DC to the coil and that your mains voltage and current requirements do not exceed the 400 V/7 A (3 kW) AC‑3 ratings.