Schneider Electric LRD21 Thermal Overload Relay

Schneider Electric TeSys LRD thermal overload relay, model LRD21, provides thermal protection for AC circuits and motors and is designed to accompany TeSys Deca contactors to form compact motor-starting assemblies. It is rated for 12 to 18 A and has a class 10A thermal trip rating, with one normally open and one normally closed auxiliary contact (1NO+1NC) for signaling or interlocking. The unit features multi-standard screw terminals for straightforward wiring and a compact modular footprint within the TeSys LRD family. By monitoring temperature and interrupting current when the threshold is exceeded, it helps prevent motor damage due to overload, while allowing normal operation when conditions are safe. The LRD21 is a dedicated thermal overload relay for Schneider Electric's TeSys Deca line, designed to integrate with Schneider Electric motor-control solutions for reliable protection in industrial control panels. Its auxiliary contact arrangement provides feedback to control logic or indicators, enabling simple signaling of overload status in automation schemes.