Schneider Electric LR3D10 Relay

Schneider Electric LR3D10 is a TeSys Deca thermal overload relay designed to protect motors and AC circuits from overloads in 690 VAC systems. It handles a load current range of 4 to 6 A and provides a 1 NO + 1 NC auxiliary contact for signaling and interlocking in control circuits. As a class 10A thermal overload device, it supports protection for unbalanced loads, helping prevent motor damage during startup and operation. The LR3D10 is intended for use with Schneider Electric TeSys D contactors in the TeSys Deca family, providing integrated motor-protection functionality in industrial control panels. With an adjustable thermal-trip setting within its rated range, it can be matched to a motor’s full-load amp rating, simplifying coordination with protective devices. Typical applications include conveyors, pumps, fans, compressors, and other general-purpose motors in automation environments where reliable overload protection and straightforward fault signaling are required. The LR3D10 complements Schneider Electric’s TeSys ecosystem, offering consistent terminology and compatibility with other TeSys Deca components.