Description
The Trane CNT04319 Bi-Metal Disc Limit Control is a temperature-operated safety switch used to protect equipment from abnormal operating temperatures in HVAC systems . It operates by opening the electrical circuit when the sensed temperature reaches approximately 40C and automatically resetting and closing when it drops to around 30C, helping regulate safe cycling of heating or cooling components. It operates on a 120/240V control circuit and uses a bi-metal disc element that reacts to temperature changes for reliable switching action. Installed in rooftop units and air handling equipment, it plays a key role in preventing overheating.
