Trane CNT3780 Limit Switch 328140-751 System Integrity: Replaces obsolete or

System Integrity: Replaces obsolete or failed valves to restore the essential safety barrier for commercial water heaters

If your line pressure exceeds this

With a dedicated 150 psi pressure rating and a 210°F temperature relief threshold

this module serves as a primary or secondary low water cutoff for steam and hydronic boilers

Secure Locking Mechanism: Features an integrated coupling nut to maintain a stable connection despite compressor vibration

Trane CNT3780 Limit Switch 328140-751 System Integrity: Replaces obsolete orThe Trane CNT3780 Limit Switch is an essential safety control engineered for high performance HVAC and refrigeration equipment. This 155F Auto Reset Limit Switch monitors the internal temperature of the supply plenum to prevent thermal overruns that can lead to heat exchanger damage or unsafe operating conditions. Featuring a Single Pole Single Throw (SPST) contact configuration, the CNT3780 is designed to interrupt the burners' electrical circuit