Description
The First Company E135 Transformer is a step-down electrical component used to convert standard line voltage to control power. It reduces 120V primary input to a 24V secondary output, which is required for operating thermostats, relays, and control circuits in HVAC systems. It is installed in air handlers, fan coil units, and heating systems where it supplies consistent control voltage to ensure proper system sequencing and operation. The transformer supports safe and accurate performance by isolating control components from high-voltage power within the equipment.
