GE Minitrip

[Bay Man]

In the Tool Station catalog.

They have a GE made MCB. =A33.76...

also have a GE made minitrip. =A36.63. is the difference.

I know an RCBO is a smaller RCD, bt what is a minitrip as opposed to an MCB?

[dennis]

fit in a modern consumer unit. Screw terminals, fit mounting rails.

have blades and replace fuse carriers in older consumer units.

[Bay Man]

Thanks. Tool station do not say that. That sounds a cheap way of updating an old consumer unit.

[John Rumm]

rail mounting for modern CUs

in type for old rewireable fuse carrier replacement.

Mostly as above - although note the plug in ones have a lower maximum breaking capacity than the rail mounting ones. (they are however similar to the breaking capacity of most rewireable fuses)

An RCBO is a combined RCD and MCB - not necessarily smaller (i.e. size is not relevant).

[Tabby]

Not overly useful though. You dont get better safety from them, and you do get icnreased nuisance tripping..

NT

[John Rumm]

Indeed, this is often the case.

There are a few cases where they may be worth having; the obvious ones being if the occupants would be unable to rewire a fuse if it blew, or if the occupants would be likely to abuse a re-wireable fuse.

They can also sometimes be useful when doing something that might impose further current de-rating to the cables (say extending a circuit, or adding insulation to a house). Since re-wireable BS3036 fuses imposes a

0.7 de-rating factor one must apply to the circuit cables, replacing it with a MCB also removes this limitation.