Carrier HK02ZB028 Pressure Switch

The Carrier HK02ZB028 Pressure Switch is a critical safety component designed for precise HVAC low pressure cutout protection in residential and commercial Carrier, Bryant, and Payne systems. As a genuine OEM replacement part, it ensures the compressor is protected from damage caused by loss of charge or low ambient temperatures. This switch is factory-calibrated with a 27 psi open and 60 psi close set point, facilitating an automatic reset once system pressures stabilize. The HK02ZB028 is technically identical to the HK02ZB028B, providing a direct-fit solution that eliminates the need for field modifications. Each unit includes 48-inch wire leads, allowing for versatile routing and secure connection to the control board or contactor. Integrating this low pressure switch into your service routine ensures refrigerant circuit integrity and maintains the specified operational parameters of the refrigeration cycle.

Key Technical Benefits:

• OEM Compatibility: High-precision Carrier HK02ZB028 ensures seamless integration with factory wiring and mounting locations.
• Pre-Set Pressure Calibration: Accurate 27# Open / 60# Close points prevent short-cycling and protect against compressor seizure.
• Extended Lead Length: 48-inch electrical leads offer flexibility for various cabinet sizes and component layouts.
• Hermetically Sealed: Designed for long-term durability in high-vibration and moisture-prone condenser environments.

Frequently Asked Questions:

What is the difference between HK02ZB028 and HK02ZB028B?
There is no functional or technical difference; the "B" suffix typically indicates a packaging or bulk revision. Both parts share the same low pressure switch specifications and are interchangeable.

Will this switch work on non-Carrier equipment?
While designed for Carrier systems, this is a universal-style HVAC pressure switch that can be used on any system requiring a 27 psi cut-out and 60 psi cut-in, provided the fittings and electrical requirements match.

Is this switch an automatic or manual reset?
The Carrier HK02ZB028 is an automatic reset switch, meaning it will close the circuit once the system pressure rises back to 60 psi.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.