Schneider Part Code: A9D31820. Class A RCBO. From the Acti 9 range. 20A - 230V - 30mA - Type B Curve - Single Pole. Conforms with BS EN 61009-1. Class A RCBOs and RCDs are not sensitive to impulsive currents up to a peak of 250 A (8/20 wave form).
eBay