
Carrier HK02ZB325 Pressure Switch
The Carrier HK02ZB325 Pressure Switch is a critical safety component designed for high-pressure cutout applications in residential and commercial HVAC units. Engineered with a 400 PSI cut-out and a 325 PSI cut-in, this SPST (Single Pole Single Throw) switch monitors refrigerant pressure to protect the compressor from damage during high-head pressure events. This OEM Carrier replacement part features a 1/4 inch female SAE flare fitting with a Schrader depressor, ensuring a secure and leak-free connection to the liquid line or discharge line. Its encapsulated design provides enhanced reliability against vibration and moisture, making it a standard choice for technicians maintaining Carrier, Bryant, and Payne condensing units. By ensuring precise automatic reset functionality, this switch maintains system integrity and prevents catastrophic motor failure. Professional installation is recommended to ensure correct pressure switch calibration and system compatibility.
Key Benefits
- Effective high pressure cutout protection prevents compressor overheating and mechanical failure.
- Features automatic reset logic, restoring system operation once pressures return to 325 PSI.
- Durable stainless steel diaphragm construction ensures long-term resistance to refrigerant oils and chemicals.
- Direct HVAC replacement part compatibility reduces installation time and eliminates the need for field modifications.
- Compact, encapsulated design resists environmental contaminants and mechanical vibration.
Common Questions
What are the specific trip points for the HK02ZB325?
This switch is factory-calibrated to open the circuit at 400 PSI and automatically close it when the pressure drops to 325 PSI.
Is this pressure switch compatible with R-410A systems?
Yes, the 400/325 PSI range is specifically designed for the high-operating pressures of R-410A systems, though always verify your specific model's requirements.
How do I connect the electrical leads?
The unit comes with pre-stripped wire leads for integration into the 24V safety circuit, typically wired in series with the contactor coil.
Carrier HK02ZB325 400/325 High Pressure Switch
Notes
Item is Non Cancelable / Non Returnable
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.
Original: $20.59
-65%$20.59
$7.21Carrier HK02ZB325 Pressure Switch
The Carrier HK02ZB325 Pressure Switch is a critical safety component designed for high-pressure cutout applications in residential and commercial HVAC units. Engineered with a 400 PSI cut-out and a 325 PSI cut-in, this SPST (Single Pole Single Throw) switch monitors refrigerant pressure to protect the compressor from damage during high-head pressure events. This OEM Carrier replacement part features a 1/4 inch female SAE flare fitting with a Schrader depressor, ensuring a secure and leak-free connection to the liquid line or discharge line. Its encapsulated design provides enhanced reliability against vibration and moisture, making it a standard choice for technicians maintaining Carrier, Bryant, and Payne condensing units. By ensuring precise automatic reset functionality, this switch maintains system integrity and prevents catastrophic motor failure. Professional installation is recommended to ensure correct pressure switch calibration and system compatibility.
Key Benefits
- Effective high pressure cutout protection prevents compressor overheating and mechanical failure.
- Features automatic reset logic, restoring system operation once pressures return to 325 PSI.
- Durable stainless steel diaphragm construction ensures long-term resistance to refrigerant oils and chemicals.
- Direct HVAC replacement part compatibility reduces installation time and eliminates the need for field modifications.
- Compact, encapsulated design resists environmental contaminants and mechanical vibration.
Common Questions
What are the specific trip points for the HK02ZB325?
This switch is factory-calibrated to open the circuit at 400 PSI and automatically close it when the pressure drops to 325 PSI.
Is this pressure switch compatible with R-410A systems?
Yes, the 400/325 PSI range is specifically designed for the high-operating pressures of R-410A systems, though always verify your specific model's requirements.
How do I connect the electrical leads?
The unit comes with pre-stripped wire leads for integration into the 24V safety circuit, typically wired in series with the contactor coil.
Carrier HK02ZB325 400/325 High Pressure Switch
Notes
Item is Non Cancelable / Non Returnable
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Carrier HK02ZB325 Pressure Switch is a critical safety component designed for high-pressure cutout applications in residential and commercial HVAC units. Engineered with a 400 PSI cut-out and a 325 PSI cut-in, this SPST (Single Pole Single Throw) switch monitors refrigerant pressure to protect the compressor from damage during high-head pressure events. This OEM Carrier replacement part features a 1/4 inch female SAE flare fitting with a Schrader depressor, ensuring a secure and leak-free connection to the liquid line or discharge line. Its encapsulated design provides enhanced reliability against vibration and moisture, making it a standard choice for technicians maintaining Carrier, Bryant, and Payne condensing units. By ensuring precise automatic reset functionality, this switch maintains system integrity and prevents catastrophic motor failure. Professional installation is recommended to ensure correct pressure switch calibration and system compatibility.
Key Benefits
- Effective high pressure cutout protection prevents compressor overheating and mechanical failure.
- Features automatic reset logic, restoring system operation once pressures return to 325 PSI.
- Durable stainless steel diaphragm construction ensures long-term resistance to refrigerant oils and chemicals.
- Direct HVAC replacement part compatibility reduces installation time and eliminates the need for field modifications.
- Compact, encapsulated design resists environmental contaminants and mechanical vibration.
Common Questions
What are the specific trip points for the HK02ZB325?
This switch is factory-calibrated to open the circuit at 400 PSI and automatically close it when the pressure drops to 325 PSI.
Is this pressure switch compatible with R-410A systems?
Yes, the 400/325 PSI range is specifically designed for the high-operating pressures of R-410A systems, though always verify your specific model's requirements.
How do I connect the electrical leads?
The unit comes with pre-stripped wire leads for integration into the 24V safety circuit, typically wired in series with the contactor coil.
Carrier HK02ZB325 400/325 High Pressure Switch
Notes
Item is Non Cancelable / Non Returnable
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.












