The most common and most likely answer to this crossword clue is the 7 plus 7 letter word CIRCUIT BREAKER
I've seen this crossword clue in Financial Times
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More clues leading to the result CIRCUIT BREAKER
Buddy explains!
The straight part
We know that "fuse perhaps" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case fuse perhaps = circuit breaker.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does CIRCUIT BREAKER mean?
CIRCUIT BREAKER noun- An electrical switch capable of opening and closing an electrical circuit in all operating conditions, including fault situations.
- Quarantine measures intended to prevent spread of pandemics, such as the coronavirus.
- A financial regulatory instrument to prevent stock market crashes from occurring, by temporarily shutting down trading to allow accurate information to flow between parties.