Schneider Electric LRD21 Thermal Overload Relay

Schneider Electric LRD21 TeSys Deca thermal overload relay provides motor overload protection within TeSys starter assemblies. As part of the TeSys LRD/Deca family, the LRD21 is rated for 12 to 18 A with a thermal overload class of 10A, delivering reliable long‑term current protection for small to mid‑size three‑phase motors. The unit is configured as 1NO+1NC and uses screw-clamp terminals for secure field wiring, making it compatible with typical TeSys D contactor combinations in compact control panels. Designed for use with TeSys D/Deca contactors, the LRD21 integrates into motor‑control circuits where a clearly defined overload trip and reset path are essential, such as pumps, conveyors, and HVAC equipment. Available variants may differ in terminal arrangement (including screw clamps) and mounting options, so verify the exact version when ordering to ensure proper wiring and enclosure fit.