Get in Touch
Home / Auto Transformers
Voltage Control

Auto Transformers We Build

Fixed or variable ratio auto transformers for motor starting, voltage adjustment, and laboratory applications. Compact and available in any voltage ratio, single or three phase.

MP Electric Corporation manufactures fixed and variable-ratio auto transformers, compact, efficient single- and three-phase units for motor starting, voltage adjustment and laboratory use. Custom-built in our Indore facility to any voltage ratio you require.

Applications
Reduced-voltage starting of induction motors
Mains voltage correction and adjustment
Laboratory and test-bench supply
Equipment requiring a compact step up / step down
Why an auto transformer

Because an auto transformer shares a single winding between primary and secondary, it is smaller, lighter and more efficient than an equivalent two-winding transformer where full galvanic isolation is not required. Variable-ratio (Variac-style) units allow the output voltage to be adjusted continuously across the range, ideal for testing and voltage trimming.

Why choose MP Electric

Built to your requirements

Every unit is engineered to your ratio, current and phase, not picked from a fixed catalogue.

Manufactured in Indore

Designed, wound, assembled and tested in our own central-India facility.

Pan-India delivery

Dispatched to customers across India.

Engineering support

Tell us the application and we'll recommend the right rating and configuration.

Frequently asked questions

Motor starting, voltage adjustment or correction, and laboratory supply, anywhere a compact, efficient step up / step down is needed and full galvanic isolation is not required.

A fixed-ratio unit provides a set output voltage; a variable-ratio (Variac-style) unit lets you adjust the output continuously across its range.

We build both, in any voltage ratio you need.

Need a Custom Auto Transformer?

Tell us the KVA rating, voltage ratio, and application. We'll engineer it.

Send an Enquiry