I think I'm right in saying you cannot use the fused spur you have bought to replicate the circuit that's wired.
You appear to have a fan with an over-run timer, so that it continues for a set time after the light is switched off.
For that you need an unswitched but fused live connection, but there's no such terminal on your new switch/ fuse for that.
I think your best bet is to replace just the front plate on the arrangement you have.
or get an electrician!
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc
Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.