OEM Carrier Single-Pole Contactor 30A 24V Coil (HN51KC024) for Model PH14NB042000AAAA

This is the factory-authorized OEM replacement contactor for the Carrier PH14NB042000AAAA heat pump. The contactor is the high-voltage relay that closes the compressor circuit every time your thermostat calls for cooling or heating. When it fails — through pitted contacts, a burned coil, or contacts that weld shut — your system will either refuse to start entirely or run continuously without responding to thermostat commands. Replacing with the correct OEM part ensures a factory-matched fit and eliminates guesswork on coil pull-in voltage and amp ratings.

• Specs: 1-Pole configuration | 30A FLA (Full Load Amps) | 150A LRA (Locked Rotor Amps) | 24 VAC coil voltage | 50/60 Hz | OEM Part Number: HN51KC024
• OEM vs Generic: This is the genuine Carrier Factory Authorized Part, designed to meet exact factory specifications for coil resistance, contact gap, and arc suppression. Generic aftermarket contactors frequently carry ±10% amp tolerance and lower-grade contact alloys, which accelerates pitting and shortens service life — especially on a heat pump that cycles year-round.
• Install difficulty: 2/5 — Shut off all power at the disconnect and breaker before proceeding. Photograph all wiring before removing any terminals. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. After installation, verify 24V coil pull-in with a thermostat call before closing the access panel.
• Warranty & Shipping: Backed by a 1-year OEM factory warranty. In stock and ships same business day from our warehouse — get your system running fast.

Compatibility: Engineered for the Carrier PH14NB042000AAAA heat pump. Cross-references include P282-0311, HN51CC024, HN51KB024, P282-1304, P282-1305, and 301362-101. Always verify your unit's data plate and wiring diagram before ordering. Have questions about fitment? Our parts team confirms compatibility before you buy.