Lightning DC

Lightning DC

Incorporating the NDC Circuit Breaker

The BRUSH Switchgear Lightning product, incorporating the high-speed NDC Circuit Breaker, utilises award winning magnetic actuator technology and provides an innovative DC switchgear solution for a variety of markets and demanding applications.

Combining innovation with 50 years of DC circuit breaker design and manufacturing experience, the Lightening offers optimal safety, reliability and high speed performance - the ideal solution to your DC requirements.


Lightning DC Datasheet

2 Pole datasheet

  • Superior proven technology with minimal maintenance
  • A long service life designed to exceed 30 years
  • Superior compact design concept and operating mechanisms
  • High speed operation, direct overload and electrical tripping
  • Simple, reliable mechanism with no mechanical latch
  • Ergonomic, intuitive truck isolation and interlocking
  • Enhanced electrical and mechanical endurance
  • Patented Arc transfer coil
  • Fully bi-directional current interruption
  • Hard wearing main contact material (silver tungsten carbide) ensuring long life
  • Integrated operation with a wide range of protection relay options
Rated Voltage V dc 900


Rated Service Current A 4000/6000/8000 4000/6000
Nominal Voltage V dc 750 1500
Power-Frequency Withstand Level kV 9 9
Rated Short-Time Withstand Current kAp/kA  100/71 250ms 100/71 250ms
Rated Track Time-Constant ms 100 100
Rated Short-Circuit Current kAp/kA 180/125 142/100
Bi-directional Critical Current A 25 26
Mechanical Endurance   50,000 operations 50,000 operations
Breaking Characteristic   High Speed High Speed
Rated Impulse Withstand kVp 20 20
Insulation Category   OV4 OV4
Auxiliary Operating Supply V dc 50 (other options available) 50 (other options available)

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