Schneider TeSys LRD with part number LRD4367 is a thermal overcurrent protection relay used to protect 55 kW three-phase motors at 400 V. This relay has a differential device that detects load and phase imbalance. The product has a thermal adjustment dial, a manual-automatic reset switch that also functions as a reset button, a test button to simulate thermal overload, a stop button, a flag indicator and 2 auxiliary contacts 1NO + 1NC to indicate an error. It is used as spare part in the cooling equipment of data centers, including Schneider brand chillers and INROWS.