The Hubbell High Voltage Test Business is composed of the Hipotronics brand in the USA, the Haefely and Tettex brands in Switzerland and the Robinson Instruments brand in the UK.  These companies are all leaders in the field of high voltage test equipment and electronic instrumentation, each with 50 to over 100 years of experience in laboratories, power utilities and manufacturers of transmission and distribution apparatus, substation automation, consumer electronics, aerospace and telecom equipment.  Put our 120 years of product innovations and expertise to the test.