Crabtree MCBs

zebedee2001 · 25 Sep 2011

Hi All,

Have a fusebox fitted with MCBs, the ones in there are labelled Bxx 61/Bxx where xx is the current rating. I bought a couple of new ones from screwfix (same coding) but they are slightly different. If you align the plug in prong, the rail clip appears to line up. The new ones protrude through the front of the consumer unit a bit more & the switch on the front is at the bottom of the MCB rather than in the middle.

Are these compatible MCBs & just a design tweak by Crabtree?

Thanks in advance

PrenticeBoyofDerry · 25 Sep 2011

They are replacement MCBs for starbreaker consumer unit.
Have you checked the Zs reading?

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Crabtree MCBs

zebedee2001

PrenticeBoyofDerry

DIYnot Local

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