Residual current circuit breaker 4P 6kA B-16A 30mA Type A QC/QB. Residual current circuit breaker in accordance with DIN EN 61009-1 (VDE 0664-20) with overload protection of the neutral conductor through a 4-pole circuit breaker for 400 V three-phase circuits and a residual current protection circuit in a compact housing. QuickConnect spring terminal in accordance with DIN EN 60898-1 (VDE 0641-11), on the outgoing and incoming circuits, blue test button and residual current display. Easy individual removal from the phase busbar assembly using top and bottom DIN rail sliders. Suitable for the subsequent installation of additional equipment. Labeling option directly on the device.