OEM Carrier High Pressure Switch 395/295 PSI — HK02ZA395 for Model PY1PEB048130NBAA

The Carrier HK02ZA395 is the factory-specified OEM high pressure safety switch for the PY1PEB048130NBAA packaged unit. This refrigerant-side safety device continuously monitors system discharge pressure and opens the circuit at 395 PSI to protect the compressor from catastrophic over-pressure failure, resetting once pressure drops back to 295 PSI. When this switch fails or trips, you'll typically experience nuisance lockouts, a compressor that shuts off shortly after startup, or an outright no-cooling fault code — symptoms that are easy to misdiagnose as a refrigerant or compressor problem.

• Specs: Opens at 395 PSI | Closes at 295 PSI | 1/8" NPT thread | 6(6)A rated | 240 VAC | Sensata PS80 platform (OEM: HK02ZA395A)
• OEM vs Generic: This is a genuine Carrier OEM part manufactured to exact factory pressure tolerances. Aftermarket switches frequently carry ±5–10% trip-point variance, risking compressor damage or false lockouts under normal operating conditions.
• Install difficulty: 2/5 — Recover refrigerant before removing the old switch (EPA Section 608 required). Tools needed: refrigerant recovery machine, manifold gauge set, adjustable wrench, and thread sealant. Always verify pressure has bled to zero before unthreading the switch body.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered by 3 PM local time.

Compatibility: Direct OEM replacement for Carrier model PY1PEB048130NBAA. Also replaces legacy part numbers 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, HK02ZA401, HK02ZA435, HK02ZA500, and HK02ZA501. Verify your unit's data plate and existing switch PSI rating before ordering — contact our team for free fitment confirmation.