Does this Legrand RCD fit this Legrand CU?

HappyHippyDad · Dec 4, 2022

Afternoon all..

Just lazily working through a quote on this wet and cold Sunday.

I'm trying to get Type A RCD protection for my new work. At present it has Type AC RCD.

My question is, does this Type A Legrand RCD (see link) fit in this CU as a direct replacement for the existing RCD (see picture)? They do look pretty identical! Just want to be sure though.

Legrand 411556 | RCD Dx3 DP Type A 63A 30Ma 230V 2 Module | Rexel UK

Get RCD Dx3 DP Type A 63A 30Ma 230V 2 Module at wholesale prices at Rexel UK - your electrical distributor. Join Now!

www.rexel.co.uk

[ElectriciansForums.net] Does this Legrand RCD fit this Legrand CU?

Mike Johnson · Dec 4, 2022

I think Legrand give dimension and application/fit on their web site, certainly in the catalogue.

nicebutdim · Dec 4, 2022

Mike Johnson said:
I think Legrand give dimension and application/fit on their web site, certainly in the catalogue.

Other than mentioning their domestic range of Rx3 breakers are compatible with both prong and fork type busbars, I can find no reference to backward compatibiltiy in their current catalogue.

Mike Johnson · Dec 4, 2022

I think you have to go onto the web-site and look for compatibly charts.

nicebutdim · Dec 4, 2022

Mike Johnson said:
I think you have to go onto the web-site and look for compatibly charts.

Perhaps you could provide a demonstration as my attempts resulted in that previous post.

HappyHippyDad · Dec 4, 2022

nicebutdim said:
Perhaps you could provide a demonstration as my attempts resulted in that previous post.

Mine too

Mike Johnson · Dec 4, 2022

Perhaps a search through here may bring some results: Compatible products - Works with Legrand - https://developer.legrand.com/documentation/compatible-product/

nicebutdim · Dec 4, 2022

Smart home compatibility won't help much with selection of a suitable RCBO.

pc1966 · Dec 4, 2022

I suspect you will have to ask Legrand directly.

Incidentally, why two circuits labelled garage? The 40A MCB might be a SWA feed, but the other? A previous T&E feed?

HappyHippyDad · Dec 4, 2022

pc1966 said:
I suspect you will have to ask Legrand directly.

Incidentally, why two circuits labelled garage? The 40A MCB might be a SWA feed, but the other? A previous T&E feed?

There are 2 garages

Risteard · Dec 4, 2022

Really I think you would need to consult with their technical department. Only really they can answer this definitively.

Does this Legrand RCD fit this Legrand CU?

HappyHippyDad

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Legrand 411556 | RCD Dx3 DP Type A 63A 30Ma 230V 2 Module | Rexel UK

Mike Johnson

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nicebutdim

Mike Johnson

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nicebutdim

HappyHippyDad

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Mike Johnson

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nicebutdim

pc1966

HappyHippyDad

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Risteard

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