OEM Carrier 2-Pole Contactor HN52TC040 for Model GZ072SXXNDXX1XX1

This is the factory OEM replacement contactor (part number HN52TC040) for the Carrier GZ072SXXNDXX1XX1 system. The contactor is the high-voltage relay that receives a low-voltage (24V) signal from your thermostat and closes the circuit to energize the compressor and condenser fan motor. When the contactor fails — due to pitted or burned contacts, a stuck plunger, or a failed coil — the most common symptoms are an outdoor unit that won't power on at all, a compressor that hums but won't start, or a system that runs continuously without cycling off.

• Specs: 2-pole configuration | 24V AC control coil | Factory-rated amperage for Carrier GZ072SXXNDXX1XX1 | OEM part number HN52TC040 | Direct drop-in replacement, no wiring modifications required
• OEM vs Generic: This OEM contactor uses factory-spec contact materials and coil windings, ensuring proper pull-in voltage and long service life. Generic contactors frequently use lower-grade contact alloys that pit and burn faster, especially in high-cycle summer conditions.
• Install difficulty: 2/5 — Disconnect all power at the breaker and verify zero voltage with a multimeter before beginning. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, non-contact voltage tester. Photograph all wiring before disconnecting. Label each wire — typically L1, L2, T1, T2, and the 24V coil terminals.
• Warranty: 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our stocked warehouse.

Compatibility: Designed specifically for the Carrier GZ072SXXNDXX1XX1. Verify your existing contactor's pole count, coil voltage, and amperage rating against your unit's data plate before ordering to confirm fitment. If you have any questions about compatibility, our HVAC parts specialists are available to verify fit before you buy — ensuring you get the right part the first time.