Legrand residual current circuit breaker RX3, type A, for alternating and pulsating direct residual currents in accordance with VDE 0664-10, EN 61008-1, undelayed, 4-pole, rated current In 40 A, rated residual current Idn 30 mA, rated voltage Un 400 VAC, rated frequency 50 Hz, surge current resistant up to 250 A, rated short-circuit current 10 kA with suitable back-up fuse, fastening on top hat rail EN 60715 using snap-in quick fastenings, marking switch position indicator On/Off, with labeling field, attachment of auxiliary devices not possible.