TYB*2 series miniature circuit breaker possesses superior property of limiting current. Its property of limiting current is better than 3 degree current limit requirement according to IEC****8 standard. It not only increases the safety of electrical system, decreases effect on system and equipment caused by fault, and it also reduces the effect on circuit breaker. Our circuit breaker confroms with the supplementary regulation about isolating circuit breaker in standard IEC******2/GB****8.2. The great improvement in fast breaking and eliminating flashover of B*2 series circuit breaker not only dramatically improves its breaking ablility and also strengthens the safety and reliability in limit breaking situation.

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