Three Phase Transformer

Custom 3 Phase Units

Three Phase Auto Transformer Range

Our three phase transformers are designed with star connected winding to reduce 415V to 380V three phase, making them ideal for connecting imported machinery to the UK mains supply

These units have a capacity from 2.5kVA to 50kVA and are usually supplied in an open style but can also be supplied in suitable enclosures rated from IP23 to IP65 if required.

Contact our team if you have any questions or would like help with ordering today.

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Custom Manufaturers

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

415v Three-Phase Input
2.5kVA - 50kVA
50/60 Hz

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Powering Your Business with Confidence

At Louth TX, we understand how critical reliable power is for your operations. Our three-phase transformers are more than just products—they're solutions designed to support your business.

Whether you’re integrating imported equipment or upgrading your existing infrastructure, our transformers deliver seamless performance tailored to UK standards.

Standard products might not always fit your needs, and that’s where our expertise comes in. Our custom manufacturing service ensures you get exactly what your project requires. From unique kVA ratings to specialised enclosures, we’ll work closely with you to create a transformer that ticks every box.

Whatever your challenge, we’re here to help you overcome it with a solution tailored to your specifications.

Need a custom three phase transformer?

Whether you’re ordering from our standard range or require a bespoke solution, our expert team is ready to assist. We offer transformers from 2.5kVA to 50kVA with 415V to 380V star-connected designs, available in open style or enclosed units rated up to IP65.

If you have specific requirements, we’ll work closely with you to design a transformer that meets your exact needs. Get in touch today to discuss your project and receive a tailored solution you can trust.

We’re always here to help.

T:

01507 606436

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Three Phase Auto Range 2.5kVA - 415V Input

VA

INPUT

OUTPUT

REF

A(mm)

B(mm)

C(mm)

WEIGHT

2500

415V STAR CONNECTED

380V STAR CONNECTED

5200

150

110

5.45kg

Three Phase Auto Range 6kVA - 415V Input

VA

INPUT

OUTPUT

REF

A(mm)

B(mm)

C(mm)

WEIGHT

6000

415V STAR CONNECTED

380V STAR CONNECTED

5201

180

130

9.50kg

Three Phase Auto Range 10kVA - 415V Input

VA

INPUT

OUTPUT

REF

A(mm)

B(mm)

C(mm)

WEIGHT

10000

415V STAR CONNECTED

380V STAR CONNECTED

5202

250

240

140

16.30kg

Three Phase Auto Range 20kVA - 415V Input

VA

INPUT

OUTPUT

REF

A(mm)

B(mm)

C(mm)

WEIGHT

20000

415V STAR CONNECTED

380V STAR CONNECTED

5203

250

240

200

26.00kg

Three Phase Auto Range 35kVA - 415V Input

VA

INPUT

OUTPUT

REF

A(mm)

B(mm)

C(mm)

WEIGHT

35000

415V STAR CONNECTED

380V STAR CONNECTED

5204

320

290

170

32.00kg

Three Phase Auto Range 50kVA - 415V Input

VA

INPUT

OUTPUT

REF

A(mm)

B(mm)

C(mm)

WEIGHT

50000

415V STAR CONNECTED

380V STAR CONNECTED

5205

320

300

180

50.00kg

Transformers for Challenging Environments

Not all operating environments are the same, and some demand extra durability. That’s why we offer transformers with enclosures rated from IP23 to IP65. These enclosures protect against dust, water, and harsh conditions, making them ideal for outdoor installations or industrial spaces.

Let us know your requirements, and we’ll ensure your transformer is ready for the toughest challenges. Choosing the right transformer can feel complex, but at Louth TX, we make it simple.

From understanding your requirements to delivering a reliable, high-quality product, we’re committed to providing you with a service you can count on. And if you ever need assistance after installation, our team is just a call away.

Contact Our Team Now

How Does A Three Phase Transformer Work?

Three phase transformers are incredibly useful in a range of industries. Find out more here and how we can offer you bespoke solutions to your needs.

Read the full article

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.

Read the full article

Still need some answers?

Frequently Asked Questions

Do you offer custom-built transformers?

Yes, we specialise in custom transformers designed to meet specific voltage, power, and environmental requirements. Our engineers work closely with you to develop solutions tailored to your needs.

Do you provide support for installation?

While we don’t provide installation services, our experts are happy to offer guidance on best practices and setup requirements for your transformer.

How quickly can I receive my transformer?

We stock over 430 transformer types available for same-day dispatch. Custom transformers have a quick turnaround, with delivery times depending on complexity.

How quickly can you manufacture a custom transformer?

Our lead time is dependent on specification and quantity however if you have an urgent requirement for a one off please get in touch today. We can often manufacture a custom product in 7-10 days or sometimes quicker.

Are you able to make an exact copy of a failed transformer?

Yes, we are usually able to copy an existing sample with the same electrical characteristics and physical dimensions. Occasionally it may be necessary to send the sample to us for evaluation.

What are the advantages of three-phase transformers?

Three-phase transformers offer enhanced efficiency, greater power capacity, and balanced power delivery. They are more compact, cost-effective, and reliable compared to single-phase systems, making them ideal for industrial and commercial applications

Can three-phase transformers step up or step down voltages?

Yes, they are designed to step up or step down voltages efficiently in power transmission systems and industrial applications.