OEM Carrier High Pressure Switch 395/295 PSI — HK02ZA395 for Model PY2PNB030060AB

This OEM Carrier high pressure switch (part number HK02ZA395) is the factory-specified refrigerant safety cutout for the Carrier PY2PNB030060AB packaged unit. Mounted in the high-side refrigerant circuit, it continuously monitors system pressure and opens the circuit to protect the compressor when pressure exceeds a safe threshold. When this switch trips or fails, the unit will lock out on a high-pressure fault, short-cycle, or simply refuse to cool — leaving you with a warm building and an active fault code. Replacing it with a genuine OEM part ensures the exact factory trip point is restored.

• Specs: Opens (cuts out) at 395 PSI | Closes (resets) at 295 PSI | 1/8" NPT thread connection | 240 VAC rated | SPST normally-closed | Sensata PS80-03-0018 platform | Replaces: 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, HK02ZA401, HK02ZA435, HK02ZA500, HK02ZA501
• OEM vs Generic: OEM Carrier switches are factory-calibrated to ±1% PSI tolerance at the specified trip point. Aftermarket substitutes can drift 5–10%, risking nuisance trips or, worse, compressor damage from under-pressure protection. For a refrigerant safety device, OEM is always the right call.
• Install difficulty: 2/5 — Requires recovering refrigerant before replacement (EPA Section 608 certification required). Tools needed: manifold gauge set, refrigerant recovery machine, adjustable wrench, and a multimeter to confirm switch continuity before recharge. Always verify the new switch reads closed (continuity) at ambient pressure before pressurizing.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Designed and tested for the Carrier PY2PNB030060AB packaged unit. Cross-references confirmed against OEM parts documentation. Verify refrigerant circuit pressure ratings on your unit data plate before ordering. Our HVAC specialists are available to confirm fitment — contact us before you buy if you have any questions.