OEM Carrier High Pressure Switch 395/295 PSI — HK02ZA395 for Model PY2PPB048130AB

This OEM high pressure switch (part number HK02ZA395) is the factory-specified refrigerant safety switch for the Carrier PY2PPB048130AB packaged unit. Its job is critical: it continuously monitors refrigerant discharge pressure on the high side and opens the circuit to shut down the compressor if pressure exceeds the 395 PSI trip point, protecting the compressor from catastrophic over-pressure damage. A failed switch will either cause nuisance lockouts and fault codes at normal operating pressures, or — if it fails in the closed position — allow dangerous over-pressure conditions to go unchecked.

• Specs: Open setpoint: 395 PSI | Close (reset) setpoint: 295 PSI | 240 VAC | 6(6)A rated | 1/8" NPT male thread connection | Sensata PS80-03-0018 platform | SPST normally-closed
• OEM vs Generic: OEM switches are factory-calibrated to exact setpoints (±tolerance). Generic pressure switches frequently drift outside spec, risking either false trips or dangerous delayed shutoffs — never compromise on a safety-critical refrigerant protection device.
• Install difficulty: 2/5 — Recover all refrigerant before removing the switch. Tools needed: refrigerant recovery machine, manifold gauge set, adjustable wrench, thread sealant (non-hardening). Always verify the new switch setpoint with a gauge before recharging. Confirm power is off at the disconnect before touching wiring.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier model PY2PPB048130AB packaged unit. Also replaces legacy part numbers 312926-217, 71267D1, HK02ZA380, HK02ZA396, and 19240027. Verify your existing switch thread size and PSI rating on the data plate before ordering. Have questions about fitment? Our HVAC parts specialists confirm compatibility before you buy — no guesswork.