040-118

This professional-grade low-pressure switch is an essential safety component for residential and commercial HVAC systems, including central air conditioners and heat pump units. Designed to protect the compressor from damage caused by low refrigerant levels or system leaks, this air-proving switch monitors refrigerant pressure with precision. It features a reliable 22/7 PSI rating, automatically opening the circuit when pressure drops to 7 PSI to prevent equipment failure and resetting once pressure reaches 22 PSI. With its extended 50-inch wire leads, this switch provides the necessary reach for various internal cabinet layouts, ensuring a secure connection to the system control board.
Type: Air Pressure Switch
Size: Small
Application: Used in central air conditioning units and heat pump systems to monitor refrigerant pressure and provide low-pressure cutoff protection for the compressor.
Specifications: Cut-out pressure: 7 PSI; Cut-in pressure: 22 PSI; Lead length: 50 inches; Function: Low pressure safety reset