Carrier HK02SB043 High Pressure Switch OEM Replacement

The Carrier HK02SB043 is a genuine OEM high pressure switch designed for use in Carrier air conditioning and heat pump systems. This refrigerant-side safety switch monitors the high-side pressure of the refrigerant circuit and opens the electrical circuit when pressure exceeds a preset threshold, protecting the compressor and system components from damage caused by excessive discharge pressure.

Key Features:

• Genuine Carrier Factory Authorized Part — ensures exact fit and original performance specifications
• High-side refrigerant pressure monitoring for compressor protection
• Automatically interrupts the compressor circuit when unsafe pressure levels are detected
• Durable construction rated for the high-temperature, high-pressure environment of HVAC condensing units
• Direct drop-in replacement that restores original system safety and efficiency ratings

The HK02SB043 is part of Carrier's HK02SB series of high pressure switches, engineered to maintain the integrity of the system's safety sequence of operation. Using a genuine OEM replacement ensures compatibility with the unit's control board and preserves published system certifications. This switch is commonly used in residential and light commercial Carrier, Bryant, and Payne branded equipment.