Schneider Electric LT3SA00M Industrial Relay Module

Schneider Electric LT3SA00M TeSys LT thermistor protection relay with automatic reset provides motor-temperature protection via an external PTC probe. It operates from 115/230 VAC 50/60 Hz and is designed to be paired with a PTC thermistor sensor wired to the LT3 input. The device offers two discrete outputs: 1 normally open (NO) and 1 normally closed (NC) contact, enabling interlock or signaling functions while indicating a safe state when the probe is not triggered. As part of the TeSys LT3 family, LT3SA00M is intended for monitoring and protecting motors and equipment where temperature feedback from a PTC sensor is required. When the thermistor probe detects overheating, the relay interrupts the controlled circuit and, once the sensor cools, resets automatically, enabling resumed operation without manual intervention in typical installations. The combination of a PTC sensor interface, automatic reset, and dual-contact outputs makes LT3SA00M suitable for motor protection, conveyors, and general plant equipment where temperature monitoring is critical.