Emerson HS1B250 is a 0.25 kVA, single-phase step-down control transformer with dual primary windings for 240 or 480 VAC input and dual secondary windings for 120 or 240 VAC output. It is designed to power control circuits in electrical equipment and control panels by converting higher mains voltages to the lower voltages used for control devices. The 1‑phase design and 0.25 kVA rating define its capacity for modest control loads in compact installations.
