OEM Carrier High Pressure Switch 395/295 PSI — HK02ZA395 for Model PY2PPB060090AA

This OEM high pressure switch (part number HK02ZA395) is the factory-specified refrigerant-side safety device for the Carrier PY2PPB060090AA packaged unit. Mounted in the high-side refrigerant circuit, it monitors discharge pressure and opens the safety circuit the moment pressure exceeds the rated cutout threshold — protecting the compressor from catastrophic over-pressure damage. When this switch fails or drifts out of calibration, you'll typically experience nuisance high-pressure lockouts, a compressor that won't energize, or a system that trips on a fault code immediately after startup even when refrigerant charge appears normal.

• Specs: Opens (cutout) at 395 PSI | Closes (cut-in) at 295 PSI | 240 VAC rated | 1/8" NPT refrigerant port | SPST normally-closed contact | Sensata / Pressurestat platform (PS80-03-0018)
• OEM vs Generic: The OEM HK02ZA395 is factory-calibrated to ±1% pressure tolerance, ensuring precise cutout protection. Generic substitutes often drift ±5–8%, risking either nuisance trips or — more dangerously — failure to protect the compressor at true over-pressure conditions.
• Install difficulty: 3/5 — Refrigerant-side work. A certified EPA 608 technician must recover refrigerant before replacing this switch. Tools needed: manifold gauge set, refrigerant recovery machine, adjustable wrench, leak detector, and multimeter to verify switch continuity post-install. Always verify system charge after reinstallation.
• Warranty: 1-year OEM factory warranty against defects. Orders placed before 3 PM ship same business day from our warehouse.

Compatibility: Engineered as a direct OEM replacement for the Carrier PY2PPB060090AA packaged unit. Also supersedes legacy part numbers including 312926-217, 71267D1, HK02ZA380, HK02ZA396, 19240027, HK02ZA400, 312926-225, 312926-226, 312926-233, HK02ZA401, HK02ZA435, HK02ZA500, and HK02ZA501. Confirm your unit's data plate and existing switch pressure ratings before ordering. Our fitment team is available to verify compatibility — reach out before you buy.