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The hardware utilizes 1/4" push-on barb fitting process connections
High-amperage 40A contacts allow for high-power switching of compressors and condenser fan motors
Key Benefits for Technicians: Precise Pressure Protection: Factory-set to open at 650 PSI and close at 475 PSI to prevent compressor damage
The 780-735 is designed to support both configurations
Carrier 321979-401 Wiring Harness 320788-702 The hardware utilizes 1/4" push-onThe Carrier 321979 401 Wiring Harness is a critical OEM HVAC replacement part designed for specific commercial and residential air handling units and furnace systems. As a main wiring harness, it serves as the primary electrical interface between the system control board, inducer motor, and safety limit switches. This assembly features high temperature rated insulation and factory terminated connectors to ensure low resistance and reliable HVAC
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