Carrier HK02ZA395 Pressure Switch

The Carrier HK02ZA395 High Pressure Switch is a critical safety component designed for precise pressure monitoring in high-side refrigeration circuits. Engineering as a genuine OEM replacement part, this switch protects your compressor from catastrophic failure by interrupting the control circuit when internal pressures exceed safe operating limits. This specific model features a high-limit 406 PSI open threshold and an automatic 300 PSI close reset point, ensuring the system remains offline until pressures stabilize within a safe range.

For field technicians, the HK02ZA395 offers seamless compatibility and is functionally identical to the HK02ZA395A revision. It features a robust SPST (Single Pole Single Throw) configuration and is rated for use in 24V and 240V AC control circuits. Its compact design and quick-connect electrical terminals facilitate efficient installation in tight service panels. Integrating this condensing unit pressure switch into Carrier, Bryant, or Payne systems ensures the HVAC high pressure cutout functions exactly to factory specifications, maintaining the manufacturer's intended safety sequence.

• Precise Pressure Calibration: Pre-set to 406/300# ratings for accurate high-pressure protection without the need for field adjustment.
• OEM Compatibility: Replaces multiple legacy part numbers including HK02ZA395A, HK02ZA380, and HK02ZA400, reducing truck stock requirements.
• Durable Construction: Manufactured by Sensata to withstand the high-vibration environment of a residential or commercial condenser.
• Efficient Serviceability: Standard quick-connect electrical terminals and 1/4-inch thread allow for rapid swaps during emergency service calls.

Is the HK02ZA395 compatible with R-410A systems?
Yes, its 406 PSI trip point is specifically calibrated for the operating pressures typically found in R-410A high-side circuits where a safety cutout is required.

What is the difference between HK02ZA395 and HK02ZA395A?
These parts are technically identical in performance, pressure ratings, and fitment. The 'A' suffix typically denotes a minor manufacturing revision that does not affect field installation or compatibility.

Can this switch be used in 240V applications?
While most control boards operate on 24VAC, this switch is rated for up to 240VAC, making it versatile for various wiring configurations and older equipment designs.

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.