The Eaton MEM busbar chamber system is designed to provide either compact, wall mounted installations or - by using optional pedestal sets - easily assembled switchboards.

Every facility is provided to enable Eaton MEM switchgear and distribution gear

to be mounted easily and economically to busbar chambers which can be applied either to a suitable load-bearing vertical surface; or by means of a pedestal set, affixed to vertical surface which need not be load-bearing.

Eaton MEM busbar chambers are fabricated from rust protected sheet steel with a light grey paint finish. They have been type tested to BS EN 60439-1 with a rated conditional short circuit current rating of 63kA at Ue 550V and a rated short time withstand current Icw 20 times nominal rated current for one second.
Rated insulation voltage 660V.

Busbar chambers are produced in 100, 200, 400, 630 & 800A ratings and in four nominal lengths. 100, 200 & 400A units are available in all four sizes; 630 and 800A ratings are offered in the three longest units only.

All units in the range share the same height and depth dimensions. Similarly the twin busbars are located in precisely the same positions throughout the range and vary in size only in their front-to-back dimensions according to rating.

Detachable end plates enable all units to be extended by coupling to a second busbar chamber using extension sets. Both top and bottom plates are also readily detachable so that marking out and machining can be carried out.

Pedestal and back-plate sets are available to accommodate 1800, 1350 and 900mm nominal length Eaton MEM busbar chambers in all ratings. These sets enable complete industrial switchboards to be built up easily and at competitive cost to produce a ready-painted unit of pleasing appearance.

It is recommended that such switchboards are secured against a wall, although this need not be a load-bearing structure. Switchgear of 315A and above must be mounted on the underside of the BBC and fastened to the pedestal backplate. Each set comprises two pedestal sideplates and feet plus a pedestal backplate, all ready drilled; together with all necessary fastenings and spacers for floor mounting bolts. Components are of rust protected sheet steel with a light grey paint finish.

Each unit can be coupled to any other Eaton MEM chamber in the range of the same rating by removing adjacent end plates and using the appropriate busbar chamber extension set.

These comprise a set of four copper links complete with all necessary clamps, washers and fasteners plus fitting instructions.

They are suitable for the connection of small solid or stranded copper conductors and also aluminium conductors using a barrier grease. Busbar cable sockets are plated brass castings complete with clamps and fixings, suitable for the termination of either copper or aluminium conductors. Both clamps and sockets allow for clamping on the Eaton MEM busbars without drilling.

For cabling direct on to busbars of 630-800A rating a special cable extension is required which can be made to special order.