Electrical Transformers

Our electrical transformers by type

ABL Transfo manufactures electrical transformers from 1 VA to 1,000 kVA, in single-phase and three-phase. Each range has its own page, with the price of every rating:

• Single-phase transformers: from 63 VA to 20 kVA, with a 230 V or 400 V primary and a 12, 24, 48, 110, 230 or 400 V secondary.
• Three-phase transformers: from 1 to 100 kVA with prices online, and from 125 to 1,000 kVA on request.
• Toroidal transformers: from 50 VA to 2 kVA, more compact and lighter, also wound in our Gailhan workshop.
• Autotransformers: 230 V ↔ 120 V from 100 VA to 10 kVA, and three-phase 400 V ↔ 230 V from 3 to 100 kVA, when isolation is not required.
• Custom-built transformers: four online configurators for your own voltages and power rating, with the price shown as you go.
• Special transformers: oil-immersed or dry-type MV/LV transformers on request, and a three-phase transformer for HP Indigo presses.

Our transformers by application

• Isolation transformers: separate primary and secondary windings, electrostatic shield as standard, EN 61558-2-4.
• Safety transformers: safety extra-low voltage (SELV), 50 V maximum, EN 61558-2-6.
• Control transformers: control panels, automation and machinery, at 24, 48, 110 or 230 V.
• Lighting transformers: halogen lamps, spotlights and floodlights at 12 or 24 V.
• Electric gate transformers: gate and garage door motors at 24 or 12 V AC.
• Garden and pool transformers: pool lights and outdoor lighting, with IP68 waterproof models.
• Transformers for caravans and motorhomes: a 120 V appliance on a 230 V hook-up, or the reverse.
• Neon sign transformers: SIET Resinblock models, which we distribute, from 1,000 to 10,000 V for illuminated signs.

How to choose an electrical transformer

An electrical transformer, or electric transformer, changes the voltage of an alternating current without changing its frequency: a step-down transformer lowers it, from 230 V to 24 V for example, and a step-up transformer raises it, from 230 V to 400 V. To choose yours, you need five pieces of information:

1. The voltages: the input voltage (primary), which is that of your supply, and the output voltage (secondary), which is that of the equipment to be supplied.
2. The supply: single-phase, 230 V between phase and neutral, as on UK and European mains, or three-phase, 400 V between phases.
3. The power rating: add up the power of the equipment, multiply by 1.25 and choose the next rating up.
4. The IP rating: open frame (IP00) inside an electrical cabinet, or in an IP23 or IP54 enclosure depending on where it is installed; see our page on IP protection ratings.
5. The connection: screw terminals up to 55 A, cable lugs above that.

Finally, choose between a transformer with separate windings, which isolates the output from the mains, and an autotransformer, which is more compact and changes the voltage without isolation. For definitions of the technical terms, see our glossary.

Made in Gailhan, France, since 1993

ABL Transfo is a French manufacturer: we have been making transformers since 1993 in Gailhan, in the Gard, between Nîmes and Montpellier in southern France. Our single-phase transformers, low-voltage three-phase transformers, toroidal transformers and autotransformers are wound and 100 % tested there. All our isolation transformers have an electrostatic shield as standard, and thermal protection can be added on request. Our customers give us an average rating of 4.9 out of 5, from 286 reviews.

Ordering, delivery and quotes

You can buy our electrical transformers online: each product page shows the price of every rating and every version. Standard models are dispatched from France within 24 to 48 hours. Three-phase transformers are built to order: they leave our workshop within 3 working days from 1 to 50 kVA and within 6 working days from 63 to 100 kVA, and units over 30 kg are shipped on a pallet. A custom-built transformer takes from 48 hours to one week to manufacture, depending on the rating. For industrial electrical transformers above 100 kVA, or any other request outside our catalogue, request a quote: we reply within 48 hours.

For electricians, panel builders and industrial buyers who need a regular transformer supplier, a trade account shows prices excluding VAT, with a 5 % discount, and white-label supply is possible. Any questions? Call our team on +33 4 66 80 14 33, Monday to Friday, 8 am to 6 pm French time, or use our contact page.

By voltage: 230 V to 12 V transformers, 230 V to 24 V transformers and 400 V to 230 V transformers.