OEM Carrier Single-Pole Contactor 24V 30A (HN51KC024) for Model PH13NB02400GAAAA

This is the factory OEM replacement contactor for the Carrier PH13NB02400GAAAA heat pump condensing unit. The contactor is a high-voltage switching relay energized by the 24V thermostat control circuit — when the thermostat calls for cooling or heating, the 24V coil pulls in the contacts and sends line voltage to the compressor and/or condenser fan motor. When it fails, the most common symptoms include the outdoor unit not turning on despite the thermostat calling for operation, contacts welded shut causing the unit to run continuously, or a buzzing/chattering noise from the control compartment. A worn contactor is one of the most frequent causes of no-cool service calls on residential HVAC systems.

• Specs: 1-Pole (single-pole) | 24 VAC coil voltage | 30A Full Load Amps (FLA) | 150A Locked Rotor Amps (LRA) | 50/60 Hz | Factory OEM part number HN51KC024
• OEM vs Generic: This genuine Carrier OEM contactor is manufactured to exact factory specifications for the PH13NB02400GAAAA, ensuring proper coil pull-in voltage, contact gap geometry, and rated amp capacity. Generic aftermarket contactors may vary in coil sensitivity and contact plating quality, potentially leading to premature pitting or failure to pull in on weak 24V signals.
• Install difficulty: 2/5 — Shut off all power at the disconnect and breaker before opening the control compartment. Always photograph all wiring before disconnecting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, and a multimeter to verify 24V coil signal and confirm proper contact closure after installation. Inspect and replace any burnt wiring pigtails at this time.
• Warranty: 1-year OEM factory warranty. In stock and ships the same business day from our warehouse.

Compatibility: Designed for the Carrier PH13NB02400GAAAA residential heat pump condensing unit. Verify your unit's model and data plate before ordering. Cross-references: HN51CC024, P282-0311, P282-1304, P282-1305, 301362-101, 301323-101. Not sure if this is the right part? Our HVAC parts specialists verify fitment before you order — contact us today and we'll confirm compatibility instantly.