OEM Carrier 1-Pole 40 Amp 24V Contactor HN51JD026 for Model PH13NB06100GBAAA

This is the genuine OEM replacement contactor for the Carrier PH13NB06100GBAAA heat pump system. The contactor is a high-voltage relay that acts as the primary on/off switch for the compressor and condenser circuit — when the thermostat calls for cooling or heating, the 24V control board energizes the contactor coil, closing the high-voltage contacts and powering the compressor. When the contactor fails, you'll typically experience an outdoor unit that won't turn on, a system stuck blowing unconditioned air, or visible pitting and burning on the contact surfaces that causes erratic operation or complete failure to start.

• Specs: 1 Pole (SPST) | 40 Amp FLA | 24V AC/DC Coil | 50/60 Hz | With Shunt | Factory OEM part number HN51JD026
• OEM vs Generic: This is a genuine Carrier OEM contactor built to exact factory tolerances. Generic contactors may use lower-grade contact materials that pit and burn faster, especially under the high-cycling demands of a heat pump system like the PH13NB06100GBAAA.
• Install difficulty: 2/5 — Always disconnect power at the breaker before servicing. Tools needed: flat-head and Phillips screwdrivers, needle-nose pliers, and a multimeter to verify coil voltage. Photograph all wiring connections before removing the old contactor. Replace like-for-like: match pole count, amperage, and coil voltage.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Designed for use in Carrier model PH13NB06100GBAAA heat pump systems. Verify your existing contactor's pole configuration (1-pole), amperage (40A), and coil voltage (24V) against your unit's wiring diagram or data plate before ordering. Need help confirming fitment? Our HVAC parts specialists are available to verify compatibility before you buy — same-day shipping on all in-stock orders.