Le Cosinus
Transformer manufacturer in France
Our catalogue
Transformers
Low-voltage
Medium-voltage
Other Transformers
Autotransformers
Low-voltage
Variables
Power Supplies
Filtered Rectified
Other products
Inductors
Custom Windings
AC/DC Converters and Power Supplies
High-Frequency Transformers and Inductors
Bespoke Products
Le Cosinus, a manufacturer of electrical transformers, offers a wide range of standard products: low-voltage and medium-voltage three-phase transformers, single-phase transformers, three-phase-to-single-phase transformers,and direct current (AC/DC) power supplies, We also have the capacity to quickly manufacture custom transformers, inductors, and power supplies tailored to our customers' specific requirements.
High-efficiency electrical transformers that meet the requirements of the Ecodesign Directive, adaptation to mains voltages, very low secondary voltage, addition of adjustment taps, adaptation to harmonics to prevent overheating, use of a UL/CSA insulation system for export to North America, addition of electrical protection devices integrated into our transformers, such as circuit breakers, fuses or disconnectors. We can also supply suitable power cables, castors, rollers or silent blocks with our equipment to facilitate installation and limit vibration transmission. Is your installation environment demanding? We can adapt our enclosures to IP ratings, RAL colours for corrosive environments or specific space requirements.
Le Cosinus can adapt to any requirement, with the help of our low-voltage isolation transformer production facility, based in France, close to our customers.
Your needs
Can't find the product you're looking for? Have specific requirements? Get in touch with our team of professionals for a quote.
Looking for custom products?
Trusted by
For over 70 years, Le Cosinus has been supporting industrial companies in their electrical projects. Our technical expertise, responsiveness and ability to design custom solutions make us a trusted partner.
Le Cosinus expertise
With 80 years of experience, Le Cosinus will find the right product for your application. If the product does not yet exist, we will design it for you!
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Le Cosinus answers your questions
If the product is in stock, the delivery time corresponds to the carrier's normal delivery time, which is approximately 1 to 3 days depending on the destination. If the product is not in stock, an average manufacturing time is indicated for each item. This varies from one week to several weeks depending on the size of the product. These delivery times will be systematically confirmed by sending you an acknowledgement of receipt following your order.
Absolutely! All of our Low voltage transformers are manufactured in Ozoir-la-Ferrière, in the Seine-et-Marne department. Our product range extends from a few VA to nearly 500 kA. We are also one of the few manufacturers still using vacuum impregnation, which is a guarantee of quality!
Yes, if your product is available or if you wish to reduce delivery times. To do so, please contact us directly.
Yes, we have technical sales representatives and a design office. We will be proactive in offering you advice.
Yes, the prices displayed are retail prices. Professionals can benefit from discounts by proving that they represent a commercial company and requesting to open an account with our services. Existing customers of Le Cosinus benefit from commercial discounts and a simplified account opening process.
Latest news from Le Cosinus
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Optimize Your Industrial Costs with Step-Up and Step-Down Autotransformers
Une machine éloignée du tableau électrique, ou qui ne fonctionne pas avec la tension disponible sur le site : dans ces situations, plusieurs solutions existent, et l’autotransformateur en fait partie.…
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Why is my transformer humming?
A transformer that hums isn't necessarily defective. An electrical transformer naturally produces a slight hum when it's operating. The laminations in the magnetic circuit expand and contract very slightly…
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Why Choose a Stainless Steel Enclosure for Your Electrical Transformers
Regardless of the installation conditions, installing a stainless steel transformer enclosure is essential to protect the equipment and ensure the safety of people. What is a stainless steel…
