Telemecanique LT3SM00MW Thermistor Protection Relay

The Telemecanique LT3SM00MW Thermistor Protection Relay is a DIN-rail mounted protection device that monitors PTC thermistor sensors to automatically disconnect the control circuit and protect three‑phase motors from overheating. It supports 0–6 embedded PTC probes, features two changeover output contacts rated at 5 A (Output Relay), and operates over a 24–230 VAC/DC range with manual reset. With IP20 protection, cage clamp terminals, and DIN rail mounting in the TeSys LT3 family, it is commonly used in motor control centers, pumps, compressors, fans, conveyors, and other industrial equipment where reliable thermal protection is critical. Manufacturer: Telemecanique (Schneider Electric); MPN LT3SM00MW; Series TeSys LT3; compatible with IEC 60034-11 PTC thermistor sensors and operating temperature from -25°C to +60°C; common replacements include Schneider Electric RM35TM250MW and other OEM-equivalent PTC thermistor protection relays.