I am sure they do this on purpose. get you hooked on a product so you are depedent. Withdraw the product and then seriously slap you when you crave more! Nothing more than fricking drug dealers...think about it...Wylex NB, Wylex HB, MK LN series, Bill/MEM MCBS and MCCBs, SqD etc etc etc.
I have a client where the mcb board has a 'need' for all the mcbs to be replaced [dust and humidity have stopped some of them from resetting] 32 required at
The board whilst it looks industrial is in a 5 bed house I'm doing a PIR on. One RCBO is faulty and another needs downgrading as a ring has been altered at some point and is now a radial on a 30 amp.