this high limit temperature switch monitors plenum temperatures and provides a fail-safe against overheating

Where is the set screw located

preventing the common performance drift associated with generic universal alternatives

It is natively compatible with unit heaters

HVAC Humidifier Pad

Trane CNT4960 Control 321894-706 this high limit temperature switchThe Trane CNT4960 (also identified as CNT04960) is a high performance OEM high pressure control switch engineered for critical system protection in commercial and residential HVAC units. This SPST normally closed safety switch is designed to monitor discharge line pressure, effectively preventing compressor damage by opening the circuit when pressures reach 650 PSI. The control automatically resets and closes once the system pressure stabilizes at 550