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This OEM Carrier condenser contactor is the factory-specified high-voltage relay for the Carrier PY3PPA036090NA packaged unit. The contactor acts as the primary power switch for the compressor and condenser fan, using a low-voltage 24V coil signal from the thermostat to close the high-voltage circuit and bring the system to life. When the contactor fails — due to burned or pitted contacts, a stuck plunger, or a failed coil — the system will fail to start, hum without cooling, or trip the breaker repeatedly. Replacing it is one of the most common and cost-effective AC repairs available.
Compatibility: Engineered as a direct OEM replacement for Carrier model PY3PPA036090NA packaged units. Part number HN52KC025 has been superseded by HN52KC024 — both are cross-compatible 2-pole 30A 24V contactors. Verify pole count, amperage, and coil voltage on your unit's data plate before ordering. Our team is available to confirm fitment before you buy.