Mainly Technical Parameters 
Item Units Value 
Rated voltage KV 40.5 
Rated insulation level 1min power frequency withstand voltage Dry 95 
Wet 80 
Lighting impulse withstand voltage(peak) 185 
Rated current A 1250,1600,2000 
Rated short-circuit breaking current KA 20,25,31.5 
Rated operating sequence O-0.3s-CO-180s-CO 
Rated short-circuit breaking current breaking times times 20 
Rated short- circuit closed current (peak) KA 50,63,80 
Rated peak withstand current 
Rated short-time withstand current 20,25,31.5 
Rated short-circuit duration s 4 
Average opening speed ms 1.5±0.3 
Average closing speed 0.6±0.3 
Contact closing bounce duration ms ≤ 5 
Three phase closing and opening synchronism ≤ 2 
Closing time ≤ 90 
Opening time ≤ 60 
Mechanism life times 10000 
Rated operating voltage and auxiliary loop rated voltage V DC110/220 
AC110/220 
Phase loop DC resistance (without current transformer) μ Ω ≤ 100 
Permitted accumulate wear-thickness of dynamic and static contact mm 3 
Weight kg 800 

 Outdoor H.V. Vacuum Circuit Breaker