French manufacturer · Gailhan, France
Electrical transformer manufacturer since 1993
Single-phase, three-phase and toroidal transformers, plus autotransformers, all wound in our workshop in Gailhan: from 1 VA to 1,000 kVA, stock or custom-made.
- Every unit tested before dispatch
- Stock units ship in 24–48 h
- Rated 4.9/5 from 287 reviews
- Made in Gailhan, FranceEvery transformer wound in our workshop
- 100% testedEvery unit checked before dispatch
- Dispatch in 24–48 hFor stock models
- Secure paymentCard, PayPal or bank transfer
Catalogue
Our transformers
Starting price excluding VAT for each range; every rating and enclosure is listed on the product pages.
By application
What will it power?
The right transformer for your installation, by application.
Custom-made
Can’t find your voltage or rating?
Single-phase, three-phase, toroidal or autotransformer: we design your transformer, wind it and test it in our workshop in Gailhan.
- You describevoltages, rating, dimensions
- We calculateand send you a quote
- We build itwinding, wiring, testing
- We shipacross France and Europe
Reviews
What our customers say
The latest reviews left on our product pages, newest first. Most of our customers write in French: each review is shown in its original language.
pas encore testé mais fabrication de très bonne factureFinition niquel, excellent.Super conforme à la demandeproduits conforme, sans surprise, bien manufactureTransformateur pleinement fonctionnel, j’espère qu’il n’y aura pas de problème dans le temps.Je n’ai pas encore branché le produit,cela ne saurait tardé. En revanche j’ai une question à vous poser ce transfo peut-il être installé dans une boîte de dérivation,votre réponse serait la bienvenue. MerciFonctionnel comme on lui demande son rôle 👍🏼J'ai fait l'acquisition d'un tranformateur d'isolement pour l'intaller à l'alimentation de ma chaîne hifi. La mise en oeuvre récente d'un système de climatisation à mon domicile engendrait un "sifflement" (donc haute fréquence) dans mes haut-parleurs. J'avais consulté des forums. Beaucoup de spécialistes indiquaient qu'un transformateur d'isolement est conçu pour isoler galvaniquement et donc était dédié à l'aspect sécurité électrique mais laissait passer toutes les perturbations du primaire. D'autres indiquaient que brancher la masse issue du primaire au Neutre du secondaire rendait caduque l'isolement (sur ce point, ils ont fort probablement raison. Tout dépends du but recherché en fait). Moi je dis: rien de telle que l'expérimentation. J'ai donc un transformateur du fabriquant français ABL Transfo, 230V-230V 650VA pour alimenter une chaîne hifi composée entre-autres d'un step-up (transformateurs augmentant la tension des cellules phono à bobine mobile...très sensibles ces petites bêtes-là) et un ampli à lampe, le tout consommant 350W grand max (la puissance du tranformateur d'isolement doit être choisie judicieusement..voir sur le site d'ABL Transfo). J'ai fait l'essai sans brancher la masse (terre) du primaire sur le neutre du secondaire: les perturbations haute-fréquences étaient toujours présentes. Avec la masse raccordée, oh miracle, les sifflements ont disparus. Je peux écouter ma musique en mettant à fond la clim! Bref, mon but est atteint, je suis très content de mon achat, achat qui est loin de m'avoir ruiné. Pour information, j'ai mesuré la consommation à vide du transformateur (eh oui, le primaire est branché en permanence sur le secteur , il y a donc consommation de courant même s'il n'y a aucune "demande" au secondaire), résultat: 12wh. Calculs fait cela représente 21€ par an au tarif EDF 2026. Et 21€ pour un plaisir d'écoute retrouvé, moi je prends. Il faut aussi penser à installer le tranfo dans un endroit pas trop confiné. Les 12w sont dissipés au moins partiellement en chaleur, ça reste léger, mais il faut le laisser respirer."Conforme à l’attendu, parfait!Très bien. Correspond à la demandeMatériel reçu correspondant à la commande et fonctionnel. A voir la tenue dans le temps (dans bloc piscine)Je suis impressionné par la qualité de ce transformateur : Il est plutôt surdimensionné côté matière, ce qui est rare avec ce type de produit.Produit correspond exactement à la commandeIl fonctionne parfaitement.Ce produit n'a pas encore été installé!Caractéristiques conformes à la commande mais design différent (forme cubique versus cylindrique)Bonjour, je vous achète un transfo sur mesure par an, ils sont bien. MerciProduit conforme, en stock et livré très rapidementPRODUIT CONFORME A LA DESCRIPTION ET AUX ATTENTESTrès bon rapport qualité prixConforme à la commande, sorties repérées, rien à dire, sauf parfait (et c'est rare) !Alimentation pour un spot led piscine de 20w , parfait .produit conforme. Durabilité à voir dans le tempsCorrespond à mes attentesPas encore posé mais produit visuellement qualitatifBon produit.Transfo en remplacement d' un en court circuit. Mise sous tension et contrôle de la tension secondaire conforme avant intégrationFonctionne parfaitement, protection d'isolement compris avec.Prix très correct pour un article françaisSuper Transformateur, silencieux et fiable.Je remercie l'entreprise pour son sérieux, et d'avoir du renvoyer le colis. A cause d'une incompréhension du dépositaire "Chronopost". Mon premier avis négatif est une erreur de ma part!References
They chose ABL Transfo
Manufacturers, major groups and service companies fit our transformers in their installations.
Trade customers
5% off the whole site as soon as your pro account is open
Electricians, installers, manufacturers, resellers: your discounted prices are shown on the site, excluding VAT.
- 5% off straight away across the catalogue, and more if you order often
- White-label shipping: your logo on the label and the delivery note
- One contact person for your quotes, orders and projects
- Fast delivery: parcels, or pallets for high ratings
Guides
Advice from our technicians
Good to know
ABL Transfo, electrical transformer manufacturer since 1993
We have been making electrical transformers since 1993 in our workshop in Gailhan, in the south of France, between Nîmes and Montpellier. Our customers range from homeowners replacing the transformer of a gate motor or a pool light to electricians, manufacturers and engineering firms, in France and across Europe. They all want the same thing: the right transformer at the right price, and someone who knows the trade at the other end of the phone.
Buying direct from a transformer manufacturer also means knowing who wound your unit. Every product page shows the price of each rating, the voltages, the IP rating and the wiring, and we answer your questions Monday to Friday, 8 am to 6 pm (CET), on +33 4 66 80 14 33.
From winding to dispatch: our workshop in Gailhan, France
All our transformers are made in Gailhan: single-phase, three-phase and toroidal transformers as well as autotransformers. Each one is designed, wound, wired and tested in our workshop before it leaves. Testing is not done on samples: no unit leaves the workshop without being powered up and checked.
Connections follow the same logic across the range: screw terminals up to 55 A, cable lugs above that. Our isolation transformers come with an electrostatic screen as standard, and thermal protection can be added on request. As a French transformer manufacturer, we list the voltages, ratings and wiring of every model on its product page.
1 VA to 1,000 kVA: the full range
Our single-phase transformers cover the most common needs: 230 V to 24 V and 230 V to 12 V for control circuits, automation, gates and lighting; 400 V to 230 V to supply a single-phase load from two phases; 230 V to 115 V for American equipment. Our three-phase transformers — 400 V to 400 V + N, 400 V to 230 V or 230 V to 400 V — isolate and adapt the supply of machines and switchboards: prices are shown online up to 100 kVA, and ratings from 125 to 1,000 kVA are quoted on request. Compact and quiet, our toroidal transformers serve low-voltage lighting, pools and audio, while our autotransformers change the voltage where isolation is not required.
Isolation, safety or autotransformer: which one do you need?
An isolation transformer electrically separates the load from the mains: it is the answer for a boiler that needs a clean neutral, for sensitive equipment or for a machine. A safety transformer also brings the voltage down to 50 V or less (safety extra-low voltage, SELV) for gates, pools and damp locations. An autotransformer is lighter and cheaper but does not isolate: it is the usual way to run a 120 V appliance from the United States on a 230 V supply. If in doubt, one of our technicians will help you choose.
Stock units dispatched in 24–48 h, custom units configured online
Stock models ship within 24 to 48 hours. Parcels are delivered to a pickup point or to your door, and the options, lead times and costs for your address are shown at checkout. Orders over 30 kg travel on a pallet with Kuehne + Nagel: 48 to 72 hours within mainland France, 96 hours elsewhere in Europe, free from €1,000 ex VAT, otherwise a flat €50 ex VAT.
If no standard model fits, configure your custom transformer online and see the price straight away: single-phase from 63 VA to 20 kVA, three-phase from 1 to 100 kVA, toroidal from 50 VA to 2 kVA, autotransformer from 100 VA to 5 kVA. Voltages, number of outputs, tappings and enclosure are yours to choose, and manufacturing takes 48 hours to one week depending on the rating. Beyond that, or for a special case, the quote is free and comes back within 48 hours.
Built to EN 61558
Our transformers are designed to EN 61558, the standard on the safety of transformers and power supply units. Part 2-4 covers isolating transformers; Part 2-6 covers safety isolating transformers, whose output does not exceed 50 V. Each product page states the part that applies and the protection to provide.
Trade customers: pro account and quotes within 48 h
Electricians, installers, manufacturers and resellers can open a pro account to get 5% off the whole site straight away and see prices excluding VAT. We review each application within a few business hours, usually within minutes. Your parcels can be shipped white-label, with your logo on the label and the delivery note. For a batch, a machine build or a transformer outside the catalogue, we study your project and send a quote within 48 hours.
287 customer reviews, rated 4.9/5
The reviews left on our product pages speak for themselves: 287 reviews, with an average of 4.9 out of 5. They cover our toroidal transformers, isolation transformers, single-phase models and custom units. Most of them are written in French, and you will find them on every product page.
Frequently asked questions
Where are your transformers made?
All our transformers are made in our workshop in Gailhan, in the south of France, between Nîmes and Montpellier: single-phase, three-phase and toroidal transformers and autotransformers. Every unit is tested there before dispatch.
Do you make custom transformers?
Yes. Our online configurator prices a custom single-phase transformer (63 VA to 20 kVA), three-phase transformer (1 to 100 kVA), toroidal transformer (50 VA to 2 kVA) or autotransformer (100 VA to 5 kVA). For higher ratings or special cases, ask for a quote: we reply within 48 hours.
How fast do you ship stock transformers?
Within 24 to 48 hours for stock models. Custom units take 48 hours to one week depending on the rating; beyond the configurator, the lead time is given in the quote.
Which standards do your transformers meet?
EN 61558: Part 2-4 for isolating transformers and Part 2-6 for safety isolating transformers, whose output does not exceed 50 V (SELV). Each product page states the part that applies.
How do I get a quote?
Use our quote form or call +33 4 66 80 14 33, Monday to Friday, 8 am to 6 pm (CET). We reply within 48 hours.
Do you offer trade accounts?
Yes: a pro account gives you 5% off the whole site straight away and shows prices excluding VAT. Parcels can also be shipped white-label.