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Distribution board design – the next generation

Eaton has introduced Memshield 3, a new generation of final distribution boards and associated circuit protection devices for commercial, industrial and public buildings.

Distribution board design – the next generation

Memshield 3 forms a vital element in Eaton’s PowerChain Management® solutions, which offer an integrated approach to the distribution and control of electrical energy in buildings -  from the main supply intake to the point of use.

The new range retains all the features of  Memshield but introduces new features which enable specifiers and installers to offer a wider range of power distribution solutions. In particular, 125A Type B boards are now offered with a 250A option in the larger sizes while 250A boards can be used instead of MCCB panelboards for some applications.

Memshield 3 distribution boards are offered in Type A (single-phase) and Type B (three-phase) versions with up to 24 outgoing TPN ways. Single-pole and triple-pole miniature circuit-breakers, available in ratings up to 63A, have a 10/15kA short-circuit rating (10kA to IEC 60898 and 15kA to IEC 60947-2). Previously these devices were offered as two separate ranges with 10kA and 15kA short-circuit ratings. Memshield 3 RCBOs are offered in a choice of trip sensitivities, from 10mA to 100mA and have a 10kA short-circuit rating to IEC 61009.


Type A distribution boards are now offered with a higher-rated, 125A switch-disconnector incomer in five sizes from 4-way to 16-way. They embody a number of special safety features including unique full-form blanking modules for unused ways (which also provide secure shrouding of unused busbar stabs) and fully shrouded neutral busbars. The main busbar assembly can be removed for easier installation. An optional coupling kit allows two Type A boards to be linked together vertically to increase the number of ways.


Type B boards come in two ratings – 125A and 250A with up to 24 outgoing TPN ways.

Eaton’s Smart metered split-load distribution boards are also offered in the new Memshield 3 styling, along with separate meter packs and Type A boards with integral metering. These all help meet the energy conservation requirements of the UK Building Regulations Part L2 by providing separate measurement of grouped lighting and power loads.


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