Square D LR2K0312 Relay

LR2K0312 is Schneider Electric's TeSys K differential thermal overload relay designed to protect 3‑phase motors within TeSys K starter systems. It provides adjustable overload protection in the 3.7–5.5 A range with a Class 10A trip rating, enabling reliable coordination with standard motor currents. The unit is a 3‑pole relay featuring 1 normally open and 1 normally closed contact, and is intended to mount with TeSys K contactors to interrupt power when overload conditions occur. It supports an insulation voltage up to 690 V and a rated operational voltage of 690 V AC, with a conventional free‑air thermal current around 6 A. This LR2K0312 accessory is part of Schneider Electric's motor‑control ecosystem and is commonly used in industrial control panels to protect motors from overheating, short circuits, and overload events. UL‑listed, CSA‑certified, and CE‑marked variants are available through Schneider Electric’s distribution network.