Supco LD120 SPDT Auto Reset Limit Switch 105°F Cut-In 120°F Cut-Out

The Supco LD120 SPDT Auto Reset Limit Switch is a temperature-responsive switching component that changes electrical circuit connections as equipment temperature varies. Its sensing mechanism actuates the SPDT contacts, closing the circuit at the 105F cut-in temperature and opening it at the 120F cut-out temperature in HVAC systems. The switch is positioned at the designated temperature-monitoring point and connects to the associated control wiring through its terminals. Its automatic reset action restores the proper contact state as the temperature returns through the specified switching points, regulating continuity in the connected control circuit.