The contactor is an electromechanical switch sized for high currents: it controls the direct starting of three-phase motors, unlike a relay, which handles signals and lighter loads.

Reversing contactor: a version that also allows reversing the motor's direction of rotation, useful on meat grinders and other machines with an unjamming function.

How to choose the correct part: check the coil voltage (e.g. 24V, 220V), the contactor's current/power rating, and the contact configuration (e.g. "3NO+1NC") — all values must match the original.

Compatibility: available ABB (B6/B7 series, VB6A/VB7A models), Siemens (3TK2031, 3TF2001 models) and Fimar.

For lighter signal components see Relay Switches; for other electronic spare parts go back to Electronic Spare Parts.

Frequently asked questions

What's the difference between a contactor and a relay?
The contactor is sized for high currents (direct motor starting); the relay handles lower currents, typically signals or small loads.

When do I need a reversing contactor instead of a standard one?
When the machine needs to be able to reverse the motor's direction of rotation (e.g. to clear a jammed auger).