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The 5/16-24 main contact studs ensure a low-resistance connection for high-current throughput
protecting critical furnace components
though technicians should always inspect the shaft for burrs before installation
updated replacement for the older S1-024-35779-000 model
This cover is proprietary to the Johnson Controls T-4000 series
Carrier HT01BB249 Transformer The 5/16-24 main contact studsThe Carrier HT01BB249 Transformer is a critical HVAC low voltage power supply component designed for 24V control circuits. As a veteran technician knows, maintaining a stable 24VAC secondary voltage is essential for the reliable operation of contactors, gas valves, and integrated logic boards. This OEM Carrier replacement transformer provides a secondary step down from a 208 230V primary input, delivering 40VA of power to handle the inductive loads of
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