Originally posted by pauluk:
These newer modular types use the DIN rail. Another aspect of the increasing "Europeanization" of British fittings.
The screws are for connection to the circuit conductors and busbars.
Dallas:
See, I'm bilingual. I speak British & American! People here keep telling me off for talking about gasoline and the trunk of my car. ("Petrol" & "boot" here.)
Hehehe... you need to come on back over more often, then!