Wylex 40 Amp 30mA DP Type B AFDD RCBO Arc Fault Detection Device NHXSB40 AFD
B40 Amp 30mA DP Type B AFDD with RCBO. Effective protection against fires started by electrical arc faults. AFDD technology detects these electrical serial arc faults that cannot be detected by MCBs, RCDs or RCBOs.