Auto Transformer Range

What Is an Auto Transformer?

Auto transformers are used for a variety of different applications including voltage regulation, railway systems and even in laboratory equipment. They are incredibly versatile.

An auto transformer is a type of electrical transformer with only one winding that acts as both the primary and the secondary winding. Unlike a conventional transformer that has separate primary and secondary windings, the autotransformer shares part of the winding for both.

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Full Stock of Auto Transformers

Our auto transformers are often able to offer significant physical size reductions when compared to a double wound transformer with a similar power rating.

Our stock auto transformers are tapped at popular voltages and are available in power handling capacities from 50VA to 1kVA.

If our stock items do not fully suit your requirements we can manufacture a custom unit to your specification, please get in touch.

Please not that auto transformers do not provide isolation between input and output.

50VA - 1kVA
50/60Hz

Looking for the right auto transformer?

Whether you need a quick replacement from our in-stock range or a custom-built solution tailored to your exact voltage and size requirements, our team is ready to help. With power ratings from 50VA to 1kVA and multiple voltage tap options, we can supply the right transformer for your application, fast and reliably.

If your project demands a bespoke design, we’ll work with you to develop a unit that meets your precise specifications. Reach out today to discuss your needs and get expert guidance from our engineering team.

We’ll make sure you get exactly what you need.

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01507 606436

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Choose Auto Transformers from Louth TX

Advanced Applications of Auto Transformers

Auto transformers are not only versatile but also vital in numerous specialised fields. Their ability to handle a wide range of voltages and compact design make them indispensable in areas such as:

Renewable Energy Systems: Auto transformers are used in solar and wind energy setups to match voltage levels and ensure efficient energy transfer.
Industrial Machinery: From motor start-up circuits to variable voltage control, auto transformers play a crucial role in industrial applications.
Telecommunications: Reliable voltage regulation for sensitive equipment ensures consistent performance in communication networks.

At Louth TX, we go beyond standard offerings to deliver solutions that meet your needs even in demanding environments.

Our Full Range of Products

Auto Range 50VA Shells - 240V or 120V Input

VA

INPUT

OUTPUT

REF

A(mm)

B(mm)

C(mm)

WEIGHT

50

0/115/240V

TAPPED

1364

67

56

61

740g

150

0/115/200/220/240V

TAPPED

1365

85

72

78

1.48kg

250

0/115/200/220/240V

TAPPED

1366

95

79

95

2.42kg

500

0/115/200/220/240V

TAPPED

1367

114

95

98

3.62kg

1000

0/115/200/220/240V

TAPPED

1368

133

111

170

8.78kg

Ready-to-Use Stock and Fast Delivery

Expert Support and Custom Solutions

Contact our team

We understand that you can't wait when you're working on a project. That’s why we maintain an inventory of auto transformers with commonly requested power capacities and voltage taps to send to you quickly.

Our stock units are ready for immediate shipment, ensuring you get the solutions you need without delays. Whether for a quick replacement or a new installation, our fast delivery keeps your operations running smoothly.

Every application has unique requirements, and our team of experts is here to provide guidance. From selecting the right transformer for your specific needs to designing custom units tailored to your specifications, we ensure that you get the best solution.

Trust Louth TX for reliable performance, expert advice, and dedicated support for all your auto transformer needs.

Auto Transformers in Renewable Energy

Find out how auto transformers are powering the UK's renewable energy sector and how Louth TX can help provide the right transformer for your project.

Learn more about transformers and renewable energy

Auto Transformers or Double Wound?

Transformers are essentially gearboxes for voltage and current but do you know what kind of transformer to use in which case? Our experts have written a quick guide to help you understand more.

More about the difference between these transformers

Still need some answers?

Frequently asked questions

What is an auto transformer?

An auto transformer is a type of transformer that uses a single winding to serve as both the primary and secondary winding. It shares a portion of the winding for input and output, which makes it more compact and efficient than a traditional transformer.

What are the advantages of using an auto transformer?

Auto transformers are typically smaller, lighter, and more cost-effective than double-wound transformers of the same power rating. They also have lower losses and improved voltage regulation, making them ideal for voltage conversion and regulation tasks.

Do auto transformers provide isolation between input and output?

No. Unlike conventional transformers, auto transformers do not provide galvanic isolation between input and output. This is important to consider in safety-critical applications.

What power ratings do your auto transformers cover?

Our stock range includes units from 50VA to 1kVA, available in popular voltage tap configurations. If you require a different rating or configuration, we can design a custom solution.

Can I order a custom auto transformer?

Yes, we offer custom manufacturing services for auto transformers tailored to your specific voltage, power, and size requirements. Contact our team with your project details to get started.

What are the typical applications for auto transformers?

Auto transformers are used in a variety of industries, including renewable energy systems, industrial motor control, telecommunications, and laboratory equipment, where compact voltage conversion is needed.

Are your auto transformers available for fast delivery?

Yes. We maintain a full stock of commonly requested auto transformers for immediate dispatch. For custom units, lead times depend on design complexity, but we always aim for quick turnaround.

Are your auto transformers compliant with industry standards?

Yes. Our products are designed and manufactured to meet relevant safety and performance standards. Specific compliance details can be provided on request

How do I choose the right auto transformer for my application?

Choosing the right unit depends on your voltage, power, frequency, and size requirements. Our technical team is available to help you identify the best option for your application.