Schneider Electric LRD21 Thermal Overload Relay

Schneider Electric TeSys LRD21 thermal overload relay provides thermal protection for AC motor circuits in TeSys Deca installations, with a 12–18 A load rating and a trip class of 10A. The unit includes an integrated 1NO+1NC auxiliary contact and uses screw-clamp terminals for secure wiring, designed to be used with TeSys D contactors to guard motors against overloads. It is rated for up to 690 V AC, suitable for standard industrial motor control applications such as conveyors, pumps, and fans where precise overload protection and status signaling are required. The LRD21 is part of Schneider Electric’s TeSys protection family, offering a compact, easy-to-wire solution that provides reliable thermal protection and a simple fault-indication path through its auxiliary contact.