This unit use MCBs and RCBOs for final sub circuit protection and can also accommodate a wide range of command and control devices such as timers, contactors and relays. This multiple RCD units all feature a variable split design with busbars that can be simply split on site to enable the exact configuration to be achieved. It has Multiple knockouts on top and bottom faces of the enclosure in addition to the rear provide most flexible cable entry. This Dual RCD units incorporating an isolator main switch and providing grouped 30mA RCD protection in two zones, can also be configured with some high integrity ways fed directly off the isolator.