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The Carrier HR54ZA006 Safety Switch is a critical OEM interlock component specifically designed for furnace blower door applications
Frequent cycling (tripping) is often caused by restricted airflow
reducing the need to stock multiple gas-specific parts
it features a 3-inch insertion depth and is factory-calibrated to trip at 180°F (opening the circuit to kill the gas valve) and automatically reset at 150°F (closing the circuit)
Nordyne 626487R Limit Switch The Carrier HR54ZA006 Safety SwitchThe Nordyne 626487R Limit Switch is a critical OEM replacement part designed for high limit temperature protection in Nordyne, Intertherm, and Miller furnaces. This single pole, manual reset limit switch is engineered to open the electrical circuit when internal plenum temperatures reach 190F, preventing heat exchanger damage and ensuring system safety. As a direct replacement for the legacy 626459 limit switch, the 626487R features a standardized
