{"id":42860,"date":"2025-08-22T09:38:16","date_gmt":"2025-08-22T07:38:16","guid":{"rendered":"https:\/\/lcsn2025.dev-labaleine.fr\/?page_id=42860"},"modified":"2026-07-27T16:58:54","modified_gmt":"2026-07-27T14:58:54","slug":"accueil","status":"publish","type":"page","link":"https:\/\/www.lecosinus.fr\/en\/","title":{"rendered":"Home"},"content":{"rendered":"
\n
<\/div>\n\n\n\n
\n

Le Cosinus<\/h1>\n\n\n\n

Transformer manufacturer in France<\/p>\n\n\n\n

\n<\/div>\n<\/div>\n\n\n\n
\n

Our catalogue<\/h2>\n\n\n\n
\n
\n
\n
\"le<\/a><\/figure>\n<\/div>\n\n\n\n
\n
\n
\n

Transformers<\/h3>\n\n\n\n
\n

Low-voltage
Medium-voltage
Other Transformers<\/p>\n<\/div>\n<\/div>\n\n\n\n

\n
\n\n\n\n
\n
View Transformers<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n
\n
\n
\"le<\/a><\/figure>\n<\/div>\n\n\n\n
\n
\n
\n

Autotransformers<\/h3>\n\n\n\n
\n

Low-voltage<\/p>\n

Variables<\/p><\/p>\n<\/div>\n<\/div>\n\n\n\n

\n
\n\n\n\n
\n
View Autotransformers<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n
\n
\n
\"le<\/a><\/figure>\n<\/div>\n\n\n\n
\n
\n
\n

Power Supplies<\/h3>\n\n\n\n
\n

Filtered Rectified<\/p>\n<\/div>\n<\/div>\n\n\n\n

\n
\n\n\n\n
\n
View Power Supplies<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n
\n
\n
\"Photos<\/a><\/figure>\n<\/div>\n\n\n\n
\n
\n
\n

Other products<\/h3>\n\n\n\n

Inductors
Custom Windings
AC\/DC Converters and Power Supplies
High-Frequency Transformers and Inductors<\/p>\n<\/div>\n\n\n\n

\n
\n\n\n\n
\n
View Other Products<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n
\n<\/div>\n\n\n\n
\n

Bespoke Products<\/h2>\n\n\n\n
\n
\n

Le Cosinus, a manufacturer of electrical transformers, offers a wide range of standard products: low-voltage and medium-voltage three-phase transformers<\/a>, single-phase transformers<\/a>, three-phase-to-single-phase transformers,<\/a>and direct current (AC\/DC) power supplies<\/a>, We also have the capacity to quickly manufacture custom transformers, inductors, and power supplies tailored to our customers' specific requirements.<\/strong> <\/p>\n\n\n\n

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. <\/p>\n\n\n\n

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. <\/p>\n<\/div>\n\n\n\n

\n
\n
\n
\"le<\/figure>\n<\/div>\n\n\n\n
\n

Your needs<\/h3>\n\n\n\n

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?<\/strong><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n

\n
\n
Request a quote
for a custom requirement<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n
\n<\/div>\n\n\n\n
\n

Trusted by<\/h2>\n\n\n\n
\n

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.<\/p>\n\n\n\n

\n
\n
\"CERN<\/figure>\n<\/div>\n\n\n\n
\n
\"Vinci\"<\/figure>\n<\/div>\n\n\n\n
\n
\"Total<\/figure>\n<\/div>\n<\/div>\n\n\n\n
\n
\n
\"Thales\"<\/figure>\n<\/div>\n\n\n\n
\n
\"Spie\"<\/figure>\n<\/div>\n\n\n\n
\n
\"SNCF\"<\/figure>\n<\/div>\n<\/div>\n\n\n\n
\n
\n
\"NAVAL<\/figure>\n<\/div>\n\n\n\n
\n
\"EQUANS\"<\/figure>\n<\/div>\n\n\n\n
\n
\"engie\"<\/figure>\n<\/div>\n<\/div>\n\n\n\n
\n
\n
\"EIFFAGE\"<\/figure>\n<\/div>\n\n\n\n
\n
\"ALSTOM\"<\/figure>\n<\/div>\n\n\n\n
\n
\"ACTEMIUM\"<\/figure>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n
\n<\/div>\n\n\n\n
\n
\n

Le Cosinus expertise<\/h2>\n\n\n\n

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! <\/p>\n<\/div>\n\n\n\n

\n
\n
\n
\"le<\/figure>\n\n\n\n

0<\/p>\n<\/div>\n\n\n\n

years of experience<\/p>\n<\/div>\n\n\n\n

\n
\n
\"le<\/figure>\n\n\n\n
\n

Over<\/span><\/strong><\/p>\n\n\n\n

0<\/p>\n<\/div>\n<\/div>\n\n\n\n

employees<\/p>\n<\/div>\n\n\n\n

\n
\n
\"le<\/figure>\n\n\n\n

0<\/p>\n<\/div>\n\n\n\n

main product categories<\/p>\n<\/div>\n\n\n\n

\n
\n

+<\/span> Over<\/p>\n\n\n\n

0<\/p>\n<\/div>\n\n\n\n

individual references<\/p>\n<\/div>\n<\/div>\n\n\n\n

\n
\n
Need advice? Ask us<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n
\n
\n\n\n\n

Le Cosinus answers your questions<\/h2>\n\n\n\n
\n\n
\n\n