Collection: Thermal Overload Relays

It protects a motor from prolonged over-current by sensing the heating effect of excess current and tripping the control circuit before damage occurs. It guards against overloads, stalled rotors and, in many models, phase loss. See the full Contactors & Relays range.

Set the adjustment dial to the motor's full-load current shown on its nameplate. Choose a relay whose range brackets that value. Setting it too high removes protection, while too low causes nuisance trips during normal operation.

Yes, in most cases. Overload relays are designed to clip onto compatible contactors of the same range, sharing the power terminals. Always confirm the contactor model and current class match. Browse compatible Contactors.

With manual reset you press a button to restart after a trip, which is safer because it forces a check of the fault. Automatic reset restarts once the relay cools, suitable for unattended equipment where an unexpected restart is acceptable.

No. Thermal overloads react to sustained over-current, not the instant high current of a short circuit. For short-circuit protection you also need a fuse or motor circuit breaker upstream. The relay and breaker work together for full protection.

Yes. Many overload relays work with single-phase motors by passing both lines through the device, while three-phase units use all poles and add phase-loss protection. Match the relay's current range to your motor and wire it with cable from Power & Cables.

Yes. Orders over €80 ship free with fast delivery across Greece, while smaller orders carry a flat fee shown at checkout. Full details are on our shipping page.

Every order is covered by Lynk Buyer Protection, and our warranty page explains how returns and faulty-item claims are handled. Contact us and we'll make it right.