The Trane SWT1277 Limit Switch/Thermostat Disc Assembly (Part No. C340056P15) is a precision-engineered, automatic-reset thermostat designed for HVAC systems. With a 3" insert and a temperature range of 115F to 145F, it provides reliable thermal protection by monitoring surface or air temperature and engaging/disengaging the circuit accordingly. Key Features Automatic reset operation for continuous thermal regulation Temperature range: Activates at 115F and resets at 145F Durable disc-type thermostat construction 3" insert length for deeper system integration Ideal for safety shutdown or temperature control in HVAC units Specifications Part Numbers: SWT1277, C340056P15 Type: Limit Switch / Thermostat Insert Length: 3 inches Temperature Ratings: Cut-in at 115F, Cut-out at 145F Reset Type: Auto-reset Application: Temperature safety control in heating and cooling systems Compatible Models (Not model-specific ? commonly used across various Trane HVAC units requiring this temperature range) Why Choose This Item Choose the Trane SWT1277 Limit Switch for dependable thermal protection in your HVAC system. Its automatic reset function and precise temperature response help maintain safety and operational efficiency. A trusted solution for technicians looking for quality and compatibility with Trane-standard reliability.