Schneider Electric LRD21 Thermal Overload Relay

The Telemecanique LRD21 thermal overload relay from Schneider Electric provides precise 3-pole motor protection with an adjustable current range of 12–18 A and Class 10A tripping characteristics, designed to guard three-phase motors against overload and phase loss when used with TeSys D contactors. It is rated for 690 VAC (600 VAC UL/CSA) and includes 1 normally open plus 1 normally closed auxiliary contact, with screw-clamp terminals and an operating temperature range of -20°C to +60°C. Mounting options include direct contactor mounting, DIN rail, or panel mounting, and it is compatible with TeSys D LC1D18, LC1D25, LC1D32, and LC1D38 contactors for OEM-direct replacement installations. Typical applications include motor control centers, conveyors, pumps, compressors, fans, HVAC equipment, and manufacturing machinery where motor protection is required.