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Hi al it’s not. DIY job I’m aware of that. But I have just purchased an electric range cooker. Had an electrician out to extend cooker cable and he told me the instructions Manila of the cooker required a 40amp MCB. I’m not really in the market as of yet to be changing the consumer unit and I wondered if anybody knew where I could get a 40amp rated MCB for my very old GET SCHUPA consumer unit or if there are any “compatible” ones floating around?