Trane CNT3785 Limit Switch Classified as a SPST normally

Classified as a SPST normally closed switch

ensuring the controller receives a true representation of supply or return air temperature

mitigating the risk of motor burnout in hermetic compressors

Enhanced Durability: Engineered for long-cycle life in demanding HVAC environments

food-grade polymers

Trane CNT3785 Limit Switch Classified as a SPST normallyThe Trane CNT3785 Limit Switch is a heavy duty, OEM replacement part engineered for precise thermal regulation in commercial gas electric packaged units. This Single Pole Single Throw (SPST), normally closed (NC) switch is factory calibrated to open at 170F, effectively interrupting the burner circuit to prevent heat exchanger damage during high temperature events. Featuring an 11 inch insertion depth, the CNT3785 provides accurate sensing within the