RS PRO 1kVA Enclosed Autotransformer, 220 V ac, 230 V ac, 240 V ac Primary, 115V ac Secondary

Autowound transformers for step-up or step-down of mains voltages at 50/60Hz.

Compact construction
Full varnish impregnation
Fully shrouded
Four-hole fixing for permanent installation
Terminal blocks with protective covers (except 50VA which has leads)
100% electrical and flash tested (2kV winding to core)
Tested in accordance with EN61558

These units do NOT provide isolation from the mains.

When you need to step down supply voltages, turn to this RS PRO enclosed autotransformer. Thanks to its primary voltage rating of 220 V AC, 230 V AC or 240 V AC and its secondary voltage rating of 115 V AC, it can power US equipment on higher European voltages.


The autotransformer has four mounting holes and a compact design, so you can easily install it in a variety of locations. It has a varnish-impregnated coil for better dielectric strength and is fully shrouded to minimise electrical interference. Its terminal blocks have protective coverings, and the unit has been electrical and flash tested to ensure safe operation at high voltages.


This autotransformer can be used to start induction motors and regulate transmission line voltage. It does not provide isolation from the mains.