Description
The Trane CNT01621 Control Capillary Tube 25A 120V is a temperature and safety control component used in HVAC systems to monitor and regulate equipment operating limits. It uses a 54-inch capillary tube to sense temperature changes and transmit signals to the SPST switching mechanism, which opens or closes the circuit based on set conditions. Installed in furnaces, air handlers, or related control assemblies, it helps prevent overheating and supports safe cycling of system operation. The part operations as a protective control element, ensuring stable performance and safeguarding equipment during heating and cooling cycles.









