Hiya Plugawsh,
The term "Switchfuse" was often used to mean a "One Way Consumer Unit" type thingy to put any wylex fuse or breaker in - say adding a shower circuit (and connector block such as Henley or wylex) .
So a 1 way might be called a switchfuse then a 2 way probably called a two way consumer unit and a wylex 604 etc called the consumer unit, so in this example you`d have circuits controlled by 3 (1 + 2 +6) switches and probably loadsa other stuff from different decades too.
and some of those switches were up for OFF and some were down for OFF.
Ho the good old days
![Cool :cool: :cool:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)