Inside a 125A DC circuit breaker. Unexpected arc quenching feature.

Описание к видео Inside a 125A DC circuit breaker. Unexpected arc quenching feature.

Initially I thought this was going to be quite a complex breaker compared to a traditional AC circuit breaker, as it's a lot harder to break a DC arc.
After initial disappointment at what appeared to be a fairly standard breaker inside with the usual bimetallic strip for detecting low level overloads and a solenoid for instant trip on very high current faults, I spotted the secret feature....



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