MK CU 11yrs old Model?

AndyPRK · Posted: Sat Mar 10, 2012 11:40 am

Could someone tell me what model this CU this is please.
I am thinking about buying a couple of 6A RCBO's and want to know which ones to get.

Do MK do Type C RCBO's ?

Thanks

MCB's labelled 59xx

AndyPRK · Posted: Sat Mar 10, 2012 12:11 pm

Do these type fit ?

http://www.ebay.co.uk/itm/110838174993?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

or what type would have been fitted at the time ?

THanks

7932s with bottom, small test button

Taylortwocities · Posted: Sat Mar 10, 2012 12:38 pm

The current models of RCBO will fit that board.
Probably the eBay type is OK as it looks modern.

Before you rush off to do this do take the cover off the CU and see if there is LOTS of space as the RCBO is much taller than the existing MCBs.

How will you test these RCBOs? Do you have an RCD tester?

Lectrician · Posted: Sat Mar 10, 2012 2:40 pm

Ignore me!

RF Lighting · Posted: Sat Mar 10, 2012 8:04 pm

The best thing to fit in that CU would be Schneider RCBOs.

The are a different name on the front, but made by the same people who used to make circuit breakers for MK, the type that you have in your CU.

JohnD · Posted: Sat Mar 10, 2012 8:09 pm

a little voice wrote:

Ignore me!

who said that?

AndyPRK · Posted: Sat Mar 10, 2012 8:22 pm

RF Lighting wrote:

The best thing to fit in that CU would be Schneider RCBOs.

Thanks RF. They look upside down to what I am used to ? With the N & E leads coming out the bottom. Is this the correct type. (see link below)

http://www.ebay.co.uk/itm/Schneider-Electric-C60H-10A-30mA-Type-c-rcbo-240V-26858-/251002759787?pt=UK_BOI_CircuitBreakers_RL&hash=item3a70ee2a6b

RF Lighting · Posted: Sat Mar 10, 2012 8:27 pm

Whoops forgot about that!

this is the one you want

http://www.ebay.co.uk/itm/MK-Sentry-B6-6A-30mA-SP-Type-B-Curve-RCBO-6KA-/320715089538?pt=UK_AudioElectronicsVideo_Video_TelevisionSetTopBoxes&hash=item4aac1be682

Lectrician · Posted: Sat Mar 10, 2012 9:46 pm

Exactly my mistake RF, Merlin and Square D Scnieder MCBs will fit, but not the RCBOs! Hence my 'ignore me' comment!

AndyPRK · Posted: Sat Mar 10, 2012 9:58 pm

Ok thanks RF. What about the one in my 2nd post with the small test button at the bottom. Do they fit well?

RF recommended: with top test button
7932S ?

RF Lighting · Posted: Sat Mar 10, 2012 10:04 pm

They do fit ok, but they don't match your existing circuit breakers, and IMO are not as well made as the old schneider ones were.

AndyPRK · Posted: Sat Mar 10, 2012 10:06 pm

Out of interest, how easy is it to fit a 2nd RCD and convert the CU to dual RCD on this board? e.g fit an N block and bus bar ? THere appear to be 2 MCB's that aren't required.

RF Lighting · Posted: Sat Mar 10, 2012 10:31 pm

To be fair by time you've messed about and bought all the bits RCBOs will be as cheap and you end up with a far superior installation.

AndyPRK · Posted: Sat Mar 10, 2012 10:50 pm

I guess I should buy a B32 RCBO too, and move an important circuit over to the other side. I think I can free a slot up, as I assume the RCD position is fixed.

Thanks for your help RF.