Siemens 3TB4717-0BB4 is a three-pole industrial contactor (frame size 4) with a 24 V DC coil, engineered to switch three-phase motors. It includes two normally open and two normally closed auxiliary contacts, enabling signaling and interlock functions alongside the main contacts. Designed for heavy-duty motor-start duties, it is rated for up to 30 kW of load in typical three-phase installations, making it suitable for equipment such as pumps, fans, and conveyors in industrial settings where a compact, reliable contactor is required.
