Stopping cut, power connected (7)
I believe the answer is:
spliced
'connected' is the definition.
(thesaurus)
'stopping cut power' is the wordplay.
'stopping' is an insertion indicator (inserted letters stop or plug a gap).
'cut' becomes 'sliced' (similar in meaning).
'power' becomes 'p' (symbol in physics).
'sliced' enclosing 'p' is 'SPLICED'.
(Other definitions for spliced that I've seen before include "Tied the knot" , "Joined two ends of rope together by weaving" , "Like a cricket bat" , "Wed" , "in a match" .)