PFIFFNER is a values-driven Swiss company with over 85 years of experience and an enormous amount of know-how long-lasting partnerships with customers and suppliers. A high level of vertical integration to control all key processes in-house. Swiss quality - from development right through to delivery Total customer satisfaction is our goal. With many years of experience and technical expertise we can provide the right solutions to meet all our customers’ needs. Wide range of instrument transformers for voltage levels up to 550 kV. Thanks to our strong presence in international markets and our close contact with customers. PFIFFNER – the symbol of unique quality with wide range of products insulated with oil-paper or SF6 offers our customers an optimal choice of high-quality instrument transformers with a long lifetime. As a result of continuous development in our R & D department, we can offer products with the latest and state-of-the-art design.