Telemecanique LR2D1316 thermal overload relay — a device used in industrial motor control to protect motors from overloads:
The Telemecanique LR2D1316 is a thermal overload relay designed to protect motors from overcurrent and overheating. It senses excessive current (which causes heat) and trips to disconnect the motor, preventing damage. It is part of the TeSys LR2D series from Telemecanique (now under Schneider Electric).
Specifications
Type: Thermal overload relay (3-pole)
Part Number: LR2D1316 (sometimes written LR2-D1316)
Motor Protection Current Range: 9–13 A adjustable
Rated Voltage: Up to ~600 V AC (some listings show up to 660–690 V AC)
Trip Class: Usually Class 10 (quick trip) — responds to overloads within ~10 seconds at 600% of rated current