If it's a tiny can it's most likely a thermal self resetting circuit breaker. They have contacts and can fail. It could open under load and reset as it cooled , you test it and it's good. Can you use/swap an ATC blade fuse instead. Or make up a pair of short leads if you have to adapt to female spades and use ATC fuse.
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95 Monaco Crown Royale
M11 400hp, 4060 trans.
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