Carrier HH18HB031 SPST Freeze Thermostat 30°FOpen/45°F Close

The Carrier HH18HB031 Freezer Thermostat is a temperature control component designed to regulate freezer operation by opening the electrical circuit at 30F and closing it again at 45F according to temperature changes. Its SPST switching action responds to the sensed temperature, automatically controlling circuit continuity to maintain the intended operating range. Positioned within the temperature control section of HVAC systems, it monitors freezer conditions and controls electrical operation based on preset temperature points. Its calibrated switching features provide proper temperature regulation, reduce unnecessary circuit cycling, support consistent freezer performance, and maintain dependable control of the connected refrigeration system.