MK Sentry Split-Load Dual RCD Arrangement comes with 100A switch disconnector, 2 x 63A 30mA RCD’s. The unit is pre-fitted with a switch disconnector and RCD together with all the necessary split-load cabling. The flexibility of design allows the RCD to be positioned to suit the required configuration of RCD protected and non-protected circuits, subject to the rating of either the switch or RCD not being exceeded. MK recommends the use of RCBO’s for non RCD protected circuits to comply with the 17th Edition Amendment 3 Wiring Regulations.