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This OEM Carrier 2-pole contactor is the factory-specified replacement for the Carrier PH2PEB042000AB condensing unit, superseding original part number HN52KC025 (current OEM successor: HN52KC024). The contactor is a high-current relay that uses a low-voltage 24V thermostat signal to switch 240V power to the compressor and condenser fan motor. When it fails, your system may refuse to start, short-cycle, run continuously without shutting off, or produce an audible chattering or humming at the outdoor unit — all clear signs the contactor's contacts are pitted, welded, or the coil has failed.
Compatibility: Engineered as the direct OEM replacement for Carrier model PH2PEB042000AB. Original part number HN52KC025 has been superseded by HN52KC024 — both are fulfilled by this listing. Verify pole count (2-pole), amperage (30A), and coil voltage (24V) against your unit's data plate before ordering. Our fitment team is available to confirm compatibility before you purchase.