Eaton Memshield 3 Cable Spreader Extension Box is made of fabricated sheet steel. It can be fitted top/bottom of Glasgow switch units to provide additional space for spreading multi-core PVC insulated cables with solid aluminium conductors and for some larger cables with stranded copper conductors. Suitable for use with type-B TPN distribution boards. The Memshield 3 delivers safe, reliable and high performance protection of electrical power distribution systems in accordance with BS EN 60439-3 standards.