I need to replace an mcb in a wylex consumer unit.Having taken off the front
panel anb undone top and bottom screws of exsisting mcb i can't seem to
remove it from the panel. Any suggestions greatfully recieved.
The latest NH Wylex CUs don't use the bottom spring clip.
They hook over the top rails and are held in by the screw to the busbar.
As this is peculiar to Wylex it seems you have to replace with Wylex mcb not
Their mcbs are DIN rail compatible. However, they seem to have an extra
connection slot in front of the DIN rail one. This fits their busbar and
holds the mcb in.
It is a very convenient arrangement.
I looked at MK mcbs in a store and they don't appear to have this extra slot
so wouldn't probably fit the Wylex busbar. I may be wrong of course..
I don't know the din standard details, but does it actually say anything
about how the busbar should be arranged? Every manufacturer may be able to
do their own thing..
The busbar connections still seem to vary significantly between
manufacturers. What has improved over the last 10 years or so is
the distance from the DIN rail to the front face and the size of
the front face opening has become more standard than it once was.
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