ABB 9T51B0160 Transformer

ABB's 9T51B0160 is a dry-type, encapsulated single-phase transformer rated at 1 kVA with a 208–240 VAC primary and a 120/240 VAC secondary in a NEMA 3R weatherproof enclosure (Type QB). This compact control-power transformer is designed for industrial environments and outdoor installations, delivering 60 Hz, 1‑phase power suitable for energizing control circuits, relays, and small equipment from a higher-voltage service. It carries a 100°C rise rating and uses an encapsulated core-and-coil construction to enhance durability and minimize noise in panel or equipment-room applications. The dual secondary provides 120 V and 240 V outputs from a split-phase secondary, offering flexible connections for automation gear, panel power distribution, and machines that require either 120 V control voltages or 240 V across a pair of hot leads.