OEM Carrier 2-Pole 40A 24V Contactor HN52TC040 for Model TCHC0250HEFMRAFA01

This is the genuine OEM Carrier contactor (part number HN52TC040), factory-specified for the Carrier TCHC0250HEFMRAFA01 system. The contactor is the high-voltage relay that your thermostat's 24V control signal switches to energize the compressor and condenser fan — it is one of the most failure-prone components in any HVAC system. When it fails, symptoms include an air conditioner that won't turn on at all, a compressor that hums but won't start, contacts that have welded shut causing the system to run continuously, or visible pitting and burning on the contact surfaces.

• Specs: 2-Pole | 40A FLA (Full Load Amps) | 24V 50/60Hz coil voltage | 240/277V load voltage | Direct OEM factory replacement for HN52TC040
• OEM vs Generic: OEM contactors use factory-grade silver-alloy contacts rated for the exact load profile of your Carrier system. Generic contactors frequently use inferior contact materials that arc and pit prematurely, shortening compressor life and risking dangerous welded-contact failures.
• Install Difficulty: 2/5 — Always disconnect power at the disconnect box and verify voltage is zero before proceeding. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring before removal. Line-voltage terminals carry up to 240V — never work on a live unit.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed as a direct OEM replacement for Carrier model TCHC0250HEFMRAFA01. Verify 2-pole configuration, 40A FLA rating, and 24V coil voltage against your unit's data plate before ordering. Our parts specialists are available to confirm fitment — contact us before you order if you have any questions.