Just helping a neighbour do an approx date on some of their installation...
On Fri, 27 Nov 2009 16:30:57 +0000 someone who may be Tim W wrote this:-
They were often installed as a plug in replacement for rewirable fuses, the breaking capacity of both is low.
I would say that the MCB was installed in the 1970s. However, the installation may be somewhat earlier.
Or somewhat later. I populated a Wylex CU with these in 1984. They were still available otc in 1987 when I needed to replace one.
Neil
Neil Evans wibbled on Friday 27 November 2009 17:19
Thank you both. That's much later than I'd anticipated...
Tim W has brought this to us :
I would guess at from 1960 to 1975. They were a direct plug in replacement for wired fuse carriers. We were rewired a little prior to
1967 and these were used, then again in 1990 when they were replaced with a more modern CU.
Yup. I installed a Wylex CU in 1984 too, again with push button MCBs.
I would guess up to about 1990 ...
A slightly more modern version is still available
Those were being installed in the early 1990s, no idea when they started though.
NT
I put them in when I built my place in the late 1970s. The ones with flick switches came later.
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