OEM Carrier High Pressure Switch 395/295 PSI — HK02ZA395 for Model PY2PPB030040NB

This OEM high pressure switch (part number HK02ZA395) is the factory-specified refrigerant-side safety control for the Carrier PY2PPB030040NB packaged unit. Manufactured by Sensata (PS80-03-0018 platform) to exact Carrier tolerances, this switch continuously monitors refrigerant discharge pressure and opens the compressor circuit the moment system pressure exceeds the safe threshold — protecting the compressor from catastrophic high-side failure. When this switch fails, you'll typically experience nuisance high-pressure lockouts, a compressor that won't energize, or a system that trips immediately on startup even when refrigerant charge is correct.

• Specs: Opens at 395 PSI | Closes/resets at 295 PSI | 1/8" NPT male thread fitting | 240 VAC rated | SPST normally-closed | Sensata PS80 series platform | PMAX 41 Bar
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part, manufactured to exact cut-out and cut-in tolerances. Aftermarket substitutes frequently carry ±10–15% pressure variance, risking compressor failure or false tripping at the wrong threshold.
• Install difficulty: 2/5 — Recover all refrigerant before removing the old switch (EPA 608 required). Tools needed: refrigerant recovery machine, manifold gauge set, 1/8" NPT wrench, Teflon tape, leak detector. Torque to manufacturer spec — do not overtighten. Recharge and verify cut-out pressure after installation.
• Warranty & Shipping: 1-year OEM factory warranty against defects. In stock — ships same business day from our warehouse. Supersedes: 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, HK02ZA401.

Compatibility: Designed as a direct OEM replacement for Carrier model PY2PPB030040NB packaged units. Verify the existing switch's cut-out PSI rating on your unit's data plate or wiring diagram before ordering — installing an incorrect pressure rating can damage the compressor. Not sure it fits? Contact our fitment team before you order — we verify compatibility at no charge.