400A MDA with Test Sockets

Mains Distribution Assembly manufactured in accordance with BS EN 61439-4 designed for arduous outdoor installations. The assembly incorporates Test Sockets to facilitate safer on-site testing.

Enclosure
Robust sheet steel enclosure of seam welded construction, providing protection to IP54. The enclosure is wall mounting and incorporates a projecting rain roof, side hinged padlockable doors and removable gland plates for incoming and outgoing cables. An angle iron frame is available to free-stand the enclosure. The enclosure is protected against corrosion by a high quality, outdoor finishing system comprising of a zinc phosphate pre-treatment followed by polyester powder coating, colour bright red (Vermilion, RAL 2002).
Enclosure dimensions: 1050H x 980W x 332D mm.

Incomer
Fitted a 400A 4P MCCB, padlockable in the OFF position (MCCB adjustable from 400A to 144A).

Distribution
1 no. 250A 4P MCCB with variable Type A RCD protection (MCCB adjustable from 250A to 90A).
1 no. 160A 4P MCCB with variable Type A RCD protection (MCCB adjustable from 160A to 58A).
1 no. 125A 4P MCCB with variable Type A RCD feeding an integral 8W pan assembly.

Test Sockets
In the incoming compartment, fitted with 5 no. 4.0mm panel mounted test sockets connected to the supply side of the incoming MCCB.
In the outgoing compartment, 2 no. 4.0mm panel mounted test sockets are connected to the load side of each MCCB / RCD and there is a common earth socket.
All test sockets are fixed in position and remain in-situ when inset plates are removed. They are protected by BS88 fuses.

See S140809 for stand kit.