Vacuum Circuit Breaker

JN15-12 series indoor high voltage earthing switch is a compositional type, and the technical parameters is corresponding to the requirements of IEC62271-102:2002. It is applicable for three-phase power system of 3-12kv, AC 50HZ. It can be used together with many types high voltage switchgear as a earthing protection unit.

Item Unit Data
Rated voltage KV 12
Rated short-time withstand current KA 31.5
Rated short-circuit duration time S 4
Rated making current KA 80
Rated withstand current(peak value) KA 80
Pole to pole distance mm 150,210,230,250,275
Rated insulation level Power frequency

withstand voltage(1 min)

KV To earth, phase to phase 42,48
Model No. L E C
JN15-12/31.5-210 655 210 516
JN15-12/31.5-230 710 230 556
JN15-12/31.5-250 760 250 596
JN15-12/31.5-275 810 275 646
  • Altitude should not exceed 1000 m
  • The ambient temperature: -25℃~ +40℃
  • The seismic intensity should not exceed 8 degree.
  • Relative humidity should not exceed 95%, monthly average value should not exceed 90%.
  • Pollution degree: Ⅱ