Since 1937, CITEL has been protecting installations around the world from transient overvoltages that result from switching events and lightning strikes. With a thorough understanding of local standards and regulations, along with continuous investment in R&D, CITEL designs, manufactures and sells millions of SPD’s each year.NCITEL develops many critical protection components internally. Our teams all over the world are proud to help bring the market a comprehensive product range of surge protectors with our unique client-focused service & quality. Unique, like each of our clients. Unique, as our strategic vision that places financial independence, international technical collaboration and strong individual commitment, at the forefront.