surge arrester , three-phase protection, with remote signalling . On the base of standard, the gap between surge arrestor Class B and Class C installed, must not be less than 10 meters. Observe the distance, the problems that are created due to make the boards for fixing it, "Combination arrestor B+C" can be used. Some Class B arrestors have certain technology, that Class C arrestor can be installed immediately next to it. Other features of this device are : - suitable for TN-C networks - With Maximum Continuous Operating Voltage (Uc=280V) - 5-year warranty - VDE test mark - Arresting capacity 12.5 kA (10/350 µs) per pole - protection circuit currents up to 37.5kA with waveform 10 / 350μS to move out Bornika is the exclusive agent of OBO Bettermann in the fields of consultation, sales and distribution of power industry products including Combination Class B+C, Type I+II.