Description
The Trane CNT04820 Bi-Metal Disc Limit Control 155°F-103249 is a thermal safety switch intended to interrupt standard AV operation when excessive heat is detected. It uses a bi-metal sensing element that reacts to temperature changes an internal contact response at the calibrated setpoint. HVAC systems integrate this control within furnaces, air handlers, and heating assemblies to prevent overheating of internal components. In commercial and industrial environments, it acts as a protective limit part that supports safe cycling of heating equipment, reduces the risk of heat damage, and assists in ensuring stable and regulated operating conditions during extended system runtime.
