20 way metal clad consumer unit prefitted with 100A main switch and Type 2 surge protection that gives 18 useable ways. Incorporates rectangular knockouts for use with 25x40mm and 50x50mm mini trunking along with 32mm & 40mm diameter round knockouts for conduit, grommets and cable glands. This consumer unit is fully compliant with BSEN61439-3:2012 and Amendment 2 of the 18th Edition of the IET Wiring Regulations – BS7671 · · · 20 Modules with 17 useable ways · · 100A main switch fitted · · Type 2 surge protection fitted · · Square knockouts · · Dimensions: H:266 x W:443 x D106mm · · Rated operating voltage: 230V