Is this red painted breaker OK? Fire alarm

Will a circuit breaker still trip if it is locked into the on position? | Schneider Electric USA.

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Yes, the internal trip mechanism will open even with the handle mechanically held closed.

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There’s a lot going on inside of a circuit breaker. And of course GFCI and AFCI breakers are even more complicated. No wonder breakers are so expensive!

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You are asking from California…You folks are strange, we cant help you much from the USA

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The breaker lock is to prevent it from being turned off. It will still trip.

It is an approved breaker lock. It does not have to be capable of lock out tag out.

Thanks! That was already answered.