Siemens 3RA1316-8XB30-1BB4 Reversing Contactor Assembly

Siemens 3RA1316-8XB30-1BB4 Reversing Contactor Assembly is a 3-pole reversing contactor designed for AC-3 duty, with a 24 V DC coil and a compact S00-size footprint. It features screw-terminal wiring and an integrated electrical and mechanical interlock to prevent simultaneous forward and reverse operation, delivering safe, reliable start/stop sequencing for reversible motor drives. Rated for 4 kW at 400 V in typical AC-3 service, this unit is intended for 3-phase motor applications in equipment such as conveyors, machine tools, and packaging lines where space is at a premium. As part of the Siemens SIRIUS 3RA1 family, the 3RA1316-8XB30-1BB4 combines a compact form with robust interlock mechanisms and straightforward wiring, making it suitable for panel installations that require a reversible drive option without sacrificing reliability. The 24 V DC coil version is designed to be driven from standard 24 V control circuits, enabling integration with common PLC or relay logic. When paired with the appropriate contactors and control components, this reversing assembly provides a complete forward/reverse solution for medium-duty, 3-phase motor applications while maintaining Siemens’ engineering standards for safety and performance.