Product Name: Zn83-12kv Drawout Type Indoor Drawout Type Vacuum Circuit Breaker Certification: ISO9001-2000, CE Function: Conventional Circuit Breaker Type: Circuit Breaker Poles Number: 3 Structure: ACB Installation: Fixed Arc-extinguishing Medium: Air Speed: Normal Type Circuit Breaker Operation: Electric Type Breaking Capacity: High Voltage Circuit Breakers Product Description ZN83 VCB is in a new type indoor switch device,which is mainly used in three-phase AC power system with rated voltage of 12kv,and rated frequency of 50-60Hz.It has the advantages of compact structure,high reliability,small operation vibration and easy maintenance.It can be widely used in power plant,steel plant,metallurgy,petrochemical,transportation,building and other industrial and mining enterprises as a switch device for protection of high voltage motors,transformers,line faults and other loads.Rated current (A)Rated short-circuit breaking current (kA)Size of mating static contact W(mm)630≤40Φ35≤40Φ491600≤40Φ55Rated current (A)Rated short-circuit breaking current (kA)Size of mating static contact W(mm)1600/2000≤50Φ79≤50Φ1094000≤50Φ109Rated current (A)Rated short-circuit breaking current (kA)630≤40≤401600≤40