OEM Carrier High Pressure Switch 395/295 PSI — Model PY2PPB060115NB

This is the genuine OEM high pressure switch for the Carrier PY2PPB060115NB packaged unit. The high pressure switch is a critical safety device that monitors refrigerant pressure on the high side of the refrigeration circuit. When system pressure rises above the factory-set cutout threshold — caused by a dirty condenser coil, blocked airflow, refrigerant overcharge, or a failing condenser fan motor — this switch opens the control circuit to protect the compressor from catastrophic damage. A failed or stuck-open switch will cause a no-cooling lockout; a switch that won't reset indicates a real high-pressure condition that must be diagnosed before replacing.

• Specs: Opens at 395 PSI | Closes (resets) at 295 PSI | 1/8" NPT thread connection | 240 VAC rated | SPST contact | Sensata / PS80-03-0018 platform
• OEM vs Generic: This is the factory-specified Carrier OEM switch (HK02ZA395), ensuring exact pressure set-points and connector compatibility. Aftermarket switches can carry ±5–10% pressure tolerances, risking nuisance trips or, worse, under-protection of the compressor.
• Install difficulty: 2/5 — Recover refrigerant and depressurize the system before removal. Tools needed: manifold gauges, adjustable wrench or 1-1/16" open-end wrench, Teflon tape for NPT threads, multimeter. Always check for underlying high-pressure condition before installing new switch.
• Warranty: 1-year OEM manufacturer warranty. Ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier PY2PPB060115NB packaged units. This part also replaces legacy Carrier part numbers 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, and HK02ZA401 — verify your existing switch's open/close PSI rating on its data label before ordering. Questions about fitment? Our HVAC parts specialists confirm compatibility before you buy.