The Siemens 3RT5045-1BB40 Power Contactor is a heavy-duty 3-pole contactor designed for industrial motor control applications. It is rated for AC-3 operation up to 37 kW at 400 V, ensuring reliable switching performance for high-power motors.

This contactor operates with a 24 V DC coil and features a Size S3 robust design, making it suitable for demanding industrial environments. The screw terminal connection provides secure and stable wiring, while its modular design allows the addition of auxiliary contacts if required.