OEM Carrier High Pressure Switch HK02ZA395 — 395/295 PSI for Model PY1PJB048090NBAA

This OEM Carrier high pressure safety switch (part number HK02ZA395) is the factory-specified replacement for the Carrier PY1PJB048090NBAA packaged unit. The high pressure switch continuously monitors refrigerant pressure on the high side of the refrigerant circuit. When system pressure exceeds the rated cutout threshold, the switch opens the control circuit to shut down the compressor, preventing catastrophic damage to the compressor, condenser coil, and connected components. A faulty or failed high pressure switch can result in nuisance lockouts, a system that won't cool, or — if the switch fails in the closed position — an unprotected compressor running into dangerously high pressures.

• Specs: Opens at 395 PSI | Closes at 295 PSI | 1/8" NPT fine thread connection | 6(6)A @ 240 VAC | PMAX 41B | Sensata PS80-03-0018 platform | Quick-connect electrical terminals
• OEM vs Generic: This is a genuine Carrier factory-authorized part, manufactured to exact pressure setpoint tolerances. Generic switches often exhibit pressure drift over time, leading to premature trips or — more dangerously — failure to protect the compressor at the correct threshold.
• Install difficulty: 2/5 — Recover refrigerant per EPA 608 regulations before removing the switch. Tools needed: manifold gauge set, 1-1/8" open-end wrench, PTFE thread tape, multimeter. Always verify the replacement switch reads open-circuit before installation. Pressurize and leak-check after reinstallation.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Fits Carrier model PY1PJB048090NBAA. Also replaces legacy part numbers: 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, HK02ZA401, HK02ZA435, HK02ZA500, HK02ZA501. Verify your unit's data plate and existing switch markings before ordering. Our team is available to confirm fitment — just reach out before you buy.