OEM Carrier High Pressure Switch 395/295 PSI — HK02ZA395 for Model PY1PPB048130ABAA

This is the genuine OEM high-pressure safety switch for the Carrier PY1PPB048130ABAA packaged unit. The high-pressure switch is a critical refrigerant-circuit safety device: it continuously monitors refrigerant discharge pressure and opens the circuit to shut down the compressor if pressure exceeds the factory-set cutout threshold. A faulty high-pressure switch causes one of two failure modes — nuisance tripping that shuts the system down even under normal operating conditions, or a switch that fails to open, allowing dangerous over-pressure events that can damage the compressor. Replacing it with the correct OEM part restores factory-calibrated protection.

• Specs: Opens (cutout) at 395 PSI | Closes (reset) at 295 PSI | 1/8" NPT thread connection | 240 VAC rated | Sensata PS80-03-0018 platform | Part No. HK02ZA395
• OEM vs Generic: OEM switches are factory-calibrated to exact cut-in/cut-out pressures (±2%). Aftermarket alternatives often carry wider tolerances, risking either premature trips or delayed shutoff — both costly outcomes for compressor longevity.
• Install difficulty: 3/5 — Refrigerant system work requires an EPA Section 608 certified technician. The system must be recovered before replacing this switch. Tools needed: manifold gauge set, refrigerant recovery unit, adjustable wrench, thread-seal tape. Always verify system pressure after re-installation before restart.
• Warranty: 1-year OEM manufacturer warranty. In-stock orders ship same business day from our warehouse.

Compatibility: Factory-specified replacement for Carrier model PY1PPB048130ABAA packaged units. Also replaces legacy part numbers 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, and HK02ZA401. Always confirm the PSI rating on your unit's data plate before ordering. Need fitment verification? Our HVAC parts specialists confirm compatibility before you buy — in stock and ready to ship today.