Square D AK-45KVA-3PH-480Y/277-DELTA-WYE-ISOLATION Transformer

Square D AK-45KVA-3PH-480Y/277-DELTA-WYE-ISOLATION Transformer is a 45 kVA, three‑phase device that converts a 3‑phase 480 V delta source to a 480Y/277 V four‑wire secondary, delivering galvanic isolation between primary and secondary. The 480 V delta input paired with a 480Y/277 V secondary provides 277 V line‑to‑neutral and 480 V line‑to‑line for loads like lighting, motors, panels, and process equipment, while keeping critical circuits isolated to reduce noise and grounding issues. With a 45 kVA rating, it supports multiple loads such as panels, CNC machinery, conveyors, pumps, and industrial controls from a central distribution point in commercial or industrial settings where 480 V/277 V distribution is standard. The four‑wire secondary supplies a neutral conductor for 277 V single‑phase circuits derived from the 277 V phase‑to‑neutral voltage. As an isolation transformer from Square D, it integrates with typical distribution systems that use delta‑to‑wye configurations to match equipment voltages and improve compatibility across loads. This model is part of Square D's low‑voltage transformer lineup, offering robust power handling for mid‑sized facilities that require reliable conversion between 480 V delta and 480Y/277 V wye networks.