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Can I use an AC circuit breaker on a DC circuit?

Can I use an AC circuit breaker on a DC circuit?

Absolutely not. AC breakers lack the magnetic blow-out coils and arc chambers required to extinguish DC arcs. DC arcs have no natural zero-crossing and will persist, potentially causing contact welding, equipment failure, or fire. Only use breakers clearly marked with DC voltage ratings.

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Absolutely not. AC breakers lack the magnetic blow-out coils and arc chambers required to extinguish DC arcs. DC arcs have no natural zero-crossing and will persist, potentially causing contact welding, equipment failure, or fire. Only use breakers clearly marked with DC voltage ratings.

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