OEM Carrier High Pressure Switch HK02ZA395 — 395/295 PSI for Model PY1PJB048130NBAA

This is the genuine OEM Carrier high pressure safety switch (part number HK02ZA395), factory-specified for the Carrier PY1PJB048130NBAA packaged unit. The high pressure switch is a critical refrigerant-circuit safety device: it continuously monitors refrigerant discharge pressure and cuts power to the compressor if pressure exceeds the rated cutout threshold, protecting the compressor from catastrophic overpressure damage. When this switch fails or trips without recovering, you'll experience repeated compressor lockouts, fault codes indicating high-pressure trips, or an air conditioner that short-cycles and shuts off on warm days.

• Specs: Opens (cutout) at 395 PSI | Closes (reset) at 295 PSI | 6(6)A @ 240 VAC | 1/8"-NPT fine thread refrigerant port | Quick-connect electrical terminals | Sensata PS80-03-0018 body | PMAX 41 Bar
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part — not an aftermarket approximation. OEM pressure switches are calibrated to exact cutout/reset tolerances. Off-spec generics can trip at the wrong pressure, leaving your compressor unprotected or causing unnecessary nuisance lockouts.
• Install difficulty: 3/5 — Refrigerant-side work. A licensed HVAC technician must recover refrigerant before replacing this switch on a live system. Tools needed: refrigerant recovery machine, manifold gauge set, 1/8" NPT tap wrench, multimeter (continuity test), and torque wrench. Always leak-check the port after reinstallation.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before 3PM local time.

Compatibility: Direct OEM fit for Carrier model PY1PJB048130NBAA packaged units. Also supersedes legacy part numbers 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, HK02ZA401, HK02ZA435, HK02ZA500, and HK02ZA501. Always verify the PSI cutout rating on your unit's data plate before ordering. Have a fitment question? Our HVAC parts specialists are available to confirm compatibility before you buy.