Siemens 3TD 1117-0B Reversing Contactor

Siemens 3TD1117-0B is a size 0, three-pole reversing contactor from the 3TD motor-control family. It features a 110 V AC coil and is designed to switch a small industrial motor up to 5 horsepower. This reversing contactor is intended for installation in motor-control panels and starter circuits where forward/reverse operation is required and space is at a premium. The unit's size 0 frame provides a compact footprint suitable for tight enclosures, while the 110 V AC coil supports low-voltage control signals used in many industrial automation schemes. Typical applications include small conveyors, machine tools, and other equipment that require reversible drive of a motor. When replacing this part, confirm the coil voltage and horsepower rating align with your motor and that the reversing circuit meets your interlock and safety requirements.