Sasun Internatinal Electric Co., Ltd.  

Product Name: Outdoor 12kv Pole Vacuum Circuit Breaker Model Zw8-12 Model NO.: ZW8-12 Certification: ISO9001-2000, CE, CCC Function: Circuit-Breaker Failure Protection, Overcurrent Protection Type: Fuse Poles Number: 3 Structure: 3 Phase AC 50Hz Outdoor Switch Device Installation: Outdoor Pole Mounting Arc-extinguishing Medium: Vacuum Speed: High-Speed Circuit Breaker Operation: Manual Type Breaking Capacity: High Voltage Circuit Breakers Vacuum: 12 Kv Vacuum Circuit Breaker Zw8-12 Trademark: SASUN Transport Package: Wooden Box Specification: 845 X 560 X 825 Origin: China HS Code: 8535900090 Product Description ItemUnitParameterRated VoltagekV12Rated CurrentA630Rated Short-circuit Breaking CurrentkA6.312.520Rated Short-circuit Making Current (Peak)kA1631.550Rated Peak Withstand CurrentkA1631.550Rated Short-time Withstand CurrentkA6.312.520Rated Insulation Level1min Power FrequencyWithstand Voltage (Dry Test)kV42Lightning Impulse Withstand Voltage (Peak)kV75Rated Operating SequenceO-0.3s-C O-180s-COMechanical Lifetimes10000Rated Short-circuit Current Breaking Timestimes30Rated Closing Voltage of OperatorV110, 220Rated Opening Voltage of OperatorV110, 220Clearance Between Open Contactsmm11± 1Over travel of Contactsmm3Three-phase Opening/Closing Synchronizationms≤ 2Closing Bouncing Timems≤ 2Average Opening Speedm/s1.0± 0.2Average Closing Speedm/s0.7± 0.15Opening TimeHighest Operating Voltages0.015~0.05Lowest Operating Voltages0.03~0.06Closing Times0.025~0.05Main Loop Resistance of Each Phaseμ Ω≤ 120Total Thickness of Permissible Wear of Moving and Static Contactsmm3