High Immunity RCBO – 40A B Curve, Type A, 30mA (WER40B-030) Isolator The WFD120B-030 is a 20A

The WFD120B-030 is a 20A

offering a fast

it is suitable for both 230V (2P) and 400V (4P) systems

Rated to BS 7671:2018 (Amendment 2)

solar installations

High Immunity RCBO – 40A B Curve, Type A, 30mA (WER40B-030) Isolator The WFD120B-030 is a 20AThe WER40B 030 is a 40A B Curve High Immunity Type A RCBO designed for heavier duty residential and commercial circuits, including solar PV, battery storage, and EV ready consumer units. It combines overload, short circuit, and 30mA residual current protection with enhanced resistance to nuisance tripping caused by harmonics or transient voltages. With double pole disconnection and bi directional wiring, this RCBO provides full compliance with the