LRD21C TeSys Deca Thermal Overload Relay Schneider Electric

The Schneider Electric LRD21C is a differential thermal overload relay from the TeSys Deca range (formerly TeSys D), designed to protect 3-phase electric motors against overloads, phase unbalance, and phase failure. Featuring an adjustable current setting range of 12 to 18 A with tripping Class 10A characteristics, it mounts directly underneath TeSys D contactors (such as LC1D18, LC1D25, LC1D32, or LC1D38) to form a compact motor starter assembly. Equipped with integrated 1 NO + 1 NC auxiliary contacts, manual/automatic reset selector, and a test/stop button, it delivers dependable motor protection for automation control systems.