Industrial TB-81215 Control Transformer

The Acme Electric TB-81215 Industrial Control Transformer is a 500 VA, open-core, dry-type, single-phase transformer designed to power low-voltage control circuits from a higher-voltage primary. It provides selectable primary voltages for 220/440, 230/460, or 240/480 VAC and delivers a 110/115/120 VAC secondary, making it compatible with a wide range of European and North American control devices on 50/60 Hz systems. The TB-81215 is built for reliable voltage regulation with copper windings and an isolation between primary and secondary windings to enhance safety in control panels. Its open-core and coil construction is configured for compact mounting and easy integration with integral terminal blocks and standard mounting plates, facilitating neat, accessible wiring in industrial enclosures. Typical applications include supplying relays, contactors, solenoids, and PLC input hardware that require a stable 110–120 V control circuit derived from higher-voltage mains, while maintaining primary-to-secondary isolation and robust performance under momentary inrush.