This unipolar circuit-breaker is according to the EN 60934 standard and meets the NF F 62-001 standard (railway rolling stock) only for the AN and AS curves. The size range extends from 0.04 Amps to 40 Amps. Use in direct current (DC) (up to 150 Volts according to the models) or also in alternating current (AC) (up to 415 Volts 50/60 Hertz).