Wylex RCBO

[Mark Wright]

Hi, this Wylex NHXSBS1BO6 has failed and I'll get a new one but I don't know if you see that the live is the hole at the back and the connection is really deep! Seems a stupid design.

Also when fully tightened these RCBOs have a small gap?

They just seem garbage to me.

Can I use another brand and anyone recommend anything?

 

[pc1966]

The compact one NHXS1B06 has better terminals, and no functional earth to bother with. It might be compatible with that CU but check which busbar it has.

 

[pc1966]

One I had prepared earlier, in true Blue Peter style...

 

[Mark Wright]

That does look better and I would assume it would fit. Thanks for your replies. The NHXSBS1BO6 has that clip thing on the back(which I broke when removing) for the Dim bar - I assume this is the same

 

[pc1966]

Yes, it has a plastic clip bit at the top (cable end) which you can pop out with a medium flat screwdriver to get it off the DIN rail.

 

[pc1966]

I have only once bought the "full size" RCBOs, the PSBS50-B/1, when I needed a 50A RCBO for a shower as the compact range maxes out at 40A (I think).

But then I hardly ever do such jobs!

 

[pc1966]

Yes, it has a plastic clip bit at the top (cable end) which you can pop out with a medium flat screwdriver to get it off the DIN rail.

Nope, it is not!
This shows the bottom, with the grey plastic sprung retainer on the supply busbar side.

This shows it in the "retained" position:

And this shows it in the "opened" position:

You pop the grey bit away from the body and it springs back.

 

[pc1966]

The Wylex CUs I have used only have half a DIN rail so this clip is not needed, it is held in place by the busbar clamp screw. You would only need to use this clip with a full DIN rail if using it in some small DIN box, etc.

 

[grumpyjohn01]

Afaik the compact RCBOs will not fit any legacy boards (eg NSB) as they have yet another different busbar arrangement

 

[Mark Wright]

That's what I'm thinking after looking closer the buzbar won't fit.

Honestly I don't like this RCBO - like I say how deep the live connection is - really you need to take the whole thing out to check it has a nice connection etc. And the location and position of the board etc that's not the easiest thing to do.

I'm pretty sure I've seen other RCBOs that would fit but I know people always say stick to the same brand etc

 

[pc1966]

If the CU has one of the "odd" busbars with fingers, etc, instead of a simple tongue then it is very unlikely others will fit. For a repair if the correct model is available there is no real reason to look for others. If fitting a new CU then probably you already have a preferred choice of make/model.

 

[baldelectrician]

This is why I use Hager, new RCBO still fits legacy Hager boards from circa 1993

 

[loz2754]

I'm pretty sure I've seen other RCBOs that would fit but I know people always say stick to the same brand etc

The wiring regulations say stick to the same brand, people often say the opposite.

 

[grumpyjohn01]

That's what I'm thinking after looking closer the buzbar won't fit.

Honestly I don't like this RCBO - like I say how deep the live connection is - really you need to take the whole thing out to check it has a nice connection etc. And the location and position of the board etc that's not the easiest thing to do.

I'm pretty sure I've seen other RCBOs that would fit but I know people always say stick to the same brand etc

Time was all RCBOs were like this! I keep one of these in my toolbag..invaluable

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[nicebutdim]

This is why I use Hager, new RCBO still fits legacy Hager boards from circa 1993

And the reason why I like Starbreaker. New AFDDs fit boards installed when I was a child and no arguments about whether or not they'll trip in the event of a fault

 

[Mark Wright]

It's done - I don't know why the RCBO failed but it happens. But can't understand why the live connection is so deep - silly design.
But thanks again