Frequently, in applications calling for simple voltage step-up or step-down, and where there is no requirement for electrical isolation, applying an auto-transformer will result in significant size and weight reductions as well as cost.

With its small size and weight, the auto-transformer can be installed easily in existing equipment or supplied in an enclosure, with or without cord, plug and receptacle.

Input 120V to 240V and
Input 240V to 120V

Input 110V to 415V and
Input 415V to 110V

Input 230V to 415V and
Input 415V to 415V

Toroidal Open Style

Single hole fixing through centre

Terminal Blocks

Suitable for American machinery or appliances

Autowound Transformer

Using an auto-transformer is always an economical solution when you need to step down the voltage from 230V to 120V or vice versa, and the equipment already has a fully isolated transformer or when the components do not require an isolated transformer.

The toroidal construction of an auto-transformer offers important advantages in comparison with an E/I lamination core transformer, like smaller physical size and weight, 30-70% reduction (depending on secondary voltage) and very low magnetic stray fields. The auto-transformer can be mounted horizontally using a steel washer or an epoxy potted center with a mounting hole.

With its small size and weight, the auto-transformer can be installed easily in existing equipment or supplied in an optional enclosure with or without cord, plug and receptacle.