Crossword Genius

Get mixed up and overload the circuit (4)

Ross

I believe the answer is:

fuse

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This could be a double definition.

'get mixed up' is the first definition.
Although both the answer and definition are verbs in their base form, I cannot see how they can define each other.

'overload the circuit' is the second definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe there's an association between them I don't understand?

'and' is the link.

Can you help me to learn more?

(Other definitions for fuse that I've seen before include "Meld" , "Melt with heat" , "'Blend, merge (4)'" , "Weld together through heat" , "Unite by melting" .)

I've seen this clue in the Evening Standard.
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