Recommendations for large din rail box?

Encouraged by recent help from this forum, I have another question. I would like to know recommendations for large DIN rail boxes suitable for UK residential installation.

My current project will have about 60x VMBDMI-R and 2x VMB4RYNO on the DIN rail. I have broken this into 3 panels for wiring convenience (at each end and middle of loft space, about 10m apart).

My largest panel has 27x VMBDMI + 1x VMB1RYNO. ie. equiv of 56 standard module widths.
PLUS I will need to add DC PSU and each panel should ideally also have an isolation switch (another two module width) and RCD/RCBO (another two).

I am struggling to find suitably large DIN rail cabinets. With recent changes in UK wiring regulations this cabinet also really needs to be metal/fireproof. I can find metal residential consumer-units with 20 module width and even with two such rails but that is still not quite enough. Maybe there is something better?


I think the installers I sell to create their own din rail cabinets from large lockable metal cabinets.

Alternatively, they use something like these -

I can give a couple a call to ask what they use.


I’ve spoken to an installer in Ireland, who says he always uses the Hager range of modular panels.

I think he means this type, shown here as the 66 din, 3 rail version :-

That looks just the job. I shall get a sample to check out. Thanks!

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Hello everyone

In case anyone stumbles across this thread in search of cabinets / electrical enclosures,

I’ve made contact with a company in Bedford (UK) that assembles electrical enclosures for the UK and American market, although I’m sure they will export the finished product to wherever it is needed.
They are willing to add Velbus to their list of brands… Watch this space.

They will fabricate and assemble a cabinet to your specification and populate it with Velbus hardware, circuit breakers and PSU as required.