Thermal Overload Relay

Match the relay's current range to the motor's full-load amperage (FLA), typically setting the dial to the FLA value. Consider the motor's service factor and ambient temperature. For IEC applications, select a relay that covers the FLA within its adjustable range. Our team can help verify compatibility with your starter.

NEMA relays are physically larger, more rugged, and often used in heavy-duty North American applications. IEC relays are more compact and cost-effective, suited for global equipment and panel space constraints. Both provide overload and phase-loss protection, but ensure your relay matches the starter's mounting and wiring scheme.

We supply thermal overload relays from Schneider, Siemens, Eaton (including Eaton Cutler-Hammer), GE, and Dayton. This range covers both NEMA and IEC types, ensuring compatibility with most motor starters. If you need a specific model, contact us with your part number for availability.