Crabtree 61/BM4030 1 Module SP+N Type B Miniature RCBO 40A 6kA 30mA. • Fully insulated busbar with permanent shields Miniature RCBO for maximum wiring space. Starbreaker RCBOs go one step further, they have switched neutral built in as standard, live and neutral conductors do not have to be disconnected for insulation resistance testing.
eBay