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Its compact 1/2-inch NPT inlet and outlet ports allow for simplified integration in tight furnace vestibules
The York S1-028-13379-000 is an OEM 1-groove fixed sheave engineered for precise power transmission in commercial and residential HVAC blower assemblies
Key Benefits Precise Voltage Regulation: Converts standard 120V line voltage to stable 24V AC
conforming to strict RMA static conductivity and oil-resistance standards
Resideo AT87A1155 Transformer 320788-702 Its compact 1/2-inch NPT inletUpgrade your industrial or commercial HVAC control systems with the Resideo AT87A1155 Transformer. Designed for high voltage environments, this 480V to 24V step down transformer provides a reliable 48VA power supply to run air conditioning circuits, 24V thermostats, and building automation controllers. As a NEMA Type E transformer, it features built in energy limiting overload protection per NEC Class 2 standards, ensuring your low voltage components