The circuit breaker is a combination of switching technology, modern network technology and computer processing technology in one of the outdoor distribution equipment. Itis a three-phase box sealing structure, highly intelligent and sets protection, monitoring and control in one combined operation. It has stable closing-open operation quality andsupports a variety of communication protocols, The modular design makes it is easy to upgrade and maintain. It is suitable in substation, industrial and mining enterprises, urban and rural power distribution grid and places of frequent operation. The installation of disconnector and three-phase linkage is on your choice.The fracture of disconnector is obviously visible in the OFF state and have anti-error-lock with the breaker body, which makes it safe and easy maintenance.

Overall dimensions

Technical parameters

No Item unit
1 Rated voltage kV 12
2 Rated current A 630
3 Rated frequency Hz 50
4 1 min power frequency withstand voltage(wet)
(dry)phase to phase、phase to earth/fracture
kV 34/42/48
5 Lighting impulse withstand voltage(peak)phase to phase、phase to earth/fracture kV 75/85
6 Rated short circuit breaking current kA 20
7 rated short circuit breaking times Times 30
8 Rated withstand current (peak) kA 50
9 Rated short-time withstand current/ duration kA/S 20/4
10 Rated short circuit making current kA 50
11 Resistance of main circuit μΩ ≤150(without isolation)
12 Rated N2 gas pressure (gage pressure) MPa 0.01
13 Mechanical life Times 10000

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