Discuss MK RCDs in the UK Electrical Forum area at ElectriciansForums.net

Take it back and get a refund. Look at a Fusebox CP DB with built in SPD and RCBOs.

FuseBox Circuit Protection - https://cpelectric.co.uk/

Has your risk assessment identified a need for SPDs?

The OP mentioned neutral isolation in their last post. It's worth pointing out that miniature RCBOs from CP Fusebox (RTAM range) will provide this.

Crabtree 61/M and Wylex NHXS1 ranges would also meet this requirement.
 
Last edited:
Thanks for the replies, I called up MK today to find out what they had to say about the RCD situation. The plot thickens. The chap there told me as mentioned above they have never approved any SPDs for use with their Consumer Units. The whole production of the CUs/MCBs/RCDs/RCBOs got licenced out to a company called Circpro UK Limited. So it's actually another company producing MK parts with MK branding. I've called them up this morning and am awaiting a call back from a technical chap.

Correct me if I'm wrong, but isn't it still beneficial having the inlet RCDs for neutral isolation, which the RCBOs wont offer? I also don't want to move the SPD beause it would have to run in parallel with the live inlet of the main switch, which means if it develops a fault I can't easily isolate it -- although I could purchase an additional main switch as mentioned above, appreciate that.
Seems they have approved them here.
 

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