Carrier HK02ZB126 High-Pressure Switch 257 PSI Close / 126 PSI Open

The Carrier HK02ZB126 is an OEM high-pressure switch designed for use in Carrier and Bryant HVAC systems. This dual-setpoint pressure switch is engineered to protect refrigeration and air conditioning equipment by monitoring system pressure and interrupting operation when unsafe pressure levels are detected.

Key Features:

• Closing Pressure: 257 PSI — activates circuit at this pressure threshold
• Opening Pressure: 126 PSI — opens/interrupts circuit at this pressure threshold
• Lead Length: 30 inches for flexible installation routing
• OEM replacement part for Carrier and Bryant systems
• Direct drop-in replacement — no modifications required
• Monitors refrigerant-side pressure to protect compressor and system components

The HK02ZB126 pressure switch is a critical safety and control component in residential and commercial HVAC equipment. It monitors refrigerant circuit pressure and triggers a shutoff when pressure falls outside the designated operating range, protecting the compressor from damage due to low refrigerant charge or other system faults. Sourced directly from Carrier, this OEM part ensures proper fit, function, and reliability for authorized service and repair applications.