Residual current circuit breaker 4-pole 6kA 25A 300mA Type A. Residual current circuit breaker (FI) according to DIN EN 61008-1 (VDE 0664-10), DIN EN 61008-2-1 (VDE 0664-11) with bi-connect terminals at the bottom, external blue test button and residual current display. Suitable for the subsequent installation of additional devices. Connection terminals with wire insertion protection, labeling option directly on the device.