Description
The Trane CNT01662 SPST N/C High Limit Control Thermostat 25A is an electrical switch used in systems to monitor and regulate excessive temperature within heating equipment. It operates as a normally closed control that opens when air or component temperatures exceed a preset limit, interrupting electrical flow to protect essential HVAC systems parts. In system furnaces, and air handlers, it is installed near the heat exchanger or discharge section where temperature rise must be controlled. The systems is integrated into the part safety circuit, support to avoiding overheating by shutting down burners or related components while signaling a fault condition for service intervention and system reset.
