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IEC Overload Relays
IEC overload relays are made to standards designated by the International Electrotechnical Commission (IEC). Also known as IEC overloads, they are electromagnetic switches that send signals to contactors to de-energize circuits when excessive current or phase failure is detected, protecting motors, machinery, equipment, and high-voltage systems from overheating and being damaged.
IEC motor overload relays combine with compatible contactors to create motor starter assemblies.
IEC Thermal Overload Relays
These IEC thermal overload relays prompt contactors to break electrical connections with downstream equipment once a set temperature is reached to protect connected loads from overheating and causing damage. Thermal units, also known as heaters, contain either bimetallic strips or melting alloy solder materials. When the current exceeds a predetermined threshold and temperatures rise, the material bends or liquefies, causing the thermal unit to break the circuit and cause the contactor to break its power contacts. As the materials cool down, they will return to their normally closed position and the circuit can be reset automatically or manually.
Relay Mounting Style: Direct To Contactor
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Relay Mounting Style: Separately Mounted
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