ACME Electric TB81200 Industrial Control Transformer

ACME Electric TB81200 Industrial Control Transformer is a 300 VA, single‑phase, open‑core and coil transformer designed to power control circuits for motors, contactors, solenoids and timers while preserving secondary voltage stability. It offers three primary voltage configurations—240/480 VAC, 230/460 VAC, and 220/440 VAC—with a 110/115/120 VAC secondary, making it versatile for a range of field wiring schemes. Built as a dry‑type device, it uses copper windings on a silicon‑steel laminated open core, and it features integrally molded terminal blocks with isolation barriers for safe wiring; the enclosure is open and floor‑mount compatible with a heavy‑gauge steel mounting plate for robust installation. Rated for 50/60 Hz operation, it carries insulation class 130 C (Class B) and is produced by Acme Electric, a Hubbell affiliate, in China. While widely referenced in distributor catalogs and legacy literature, TB81200 is a discontinued model in many markets. Typical applications remain in powering motor starters, contactors, solenoids, timers and other control loads where reliable voltage regulation is important under momentary Inrush conditions.