this 36T01 size bimetal switch is designed to interrupt the burner circuit if the heat exchanger or blower compartment exceeds safe operating parameters

The holes must face the supply air direction

Designed for a 4-pin Molex connection

always verify your motor's terminal configuration before installation

the 49L03 is the OEM direct replacement for 49L0301

Trane SWT1711 Limit Switch Els PW 17895 this 36T01 size bimetal switchThe Trane SWT1711 Limit Switch is a critical OEM safety component designed for precise thermal regulation in Trane and American Standard residential and light commercial furnaces. This auto reset thermal limit switch features a SPST (Single Pole Single Throw) contact configuration, engineered to open at 200F and automatically close at 170F. As a "limit open on rise" control, it protects the heat exchanger by interrupting the 24V or 120V burner circuit