Legrand miniature circuit breaker DX3 according to EN 60947-2, 1-pole, D characteristic, rated current In 40 A, rated switching capacity 10 kA according to EN 60898-1, rated voltage Un 230/400 VAC, rated frequency 50/60 Hz, fastening on top hat rail EN 60715 using two snap-in quick fasteners, clear information on the front of each device, clear switch position indicator red/green, with labeling window, with protection against misplacement for safe insertion of the conductor into the elevator terminal, attachment of auxiliary devices possible. Circuit breakers with D characteristics are intended for line protection in power circuits with very high inrush currents (e.g. welding transformers).