TBW1-1600 series universal circuit breakers ( hereinafter referred to ascircuit breakers) are suitable for AC 50/60Hz distribution networks with ratedvoltage of AC400V/690V and below, and rated current ranging from 200A to1600A. They are mainly used to distribute electrical energy, and protectcircuits and power equipment from overload , undervoltage , short circuit .single-phase grounding and other faults , Under normal conditions , it canalso be used for infrequent switching of lines . The circuit breaker hasintelligent protection function , precise selective protection , can improvepower supply reliability and avoid unnecessary power outages . At the sametime , it has an open communication interface and can be used for "fourremotes" to meet the requirements of the control center and automationsystem . 

This circuit breaker has isolation function , represented by