NDC Circuit Breaker

Combining our proven technologies with the award winning, patented magnetic actuator technology, the Lightning, incorporating the high speed NDC Circuit breaker, provides a new and innovative DC switchgear solution for a variety of markets and demanding applications

Features

Combining our proven technologies with the award winning, patented magnetic actuator technology, the Lightning provides a new and innovative DC switchgear solution for a variety of markets and demanding applications.

  • Superior, proven Fit & Forget technology with minimal maintenance
  • A long service life designed to exceed 30 years
  • 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 into arc chute
  • Compact design
  • Integrated operation with a wide range of protection relay options

For Spares, Service and Repair, please click here.

Ratings

Rated Voltage

V dc

900

1800

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

180 / 125

Mechanical Endurance

 

50,000 operations

50,000 operations

Bi-directional Critical Current **

A

25

26

Breaking Characteristic

 

H

H

Rated Insulation Voltage

kV

1.8

3

Auxiliary Operating Supply

V dc

50 (Other Options Available)

50 (Other Options Available)

** As defined in BS EN50123-1: 2003, the critical current quoted is the current with the longest arcing time. At 900V / 25A the arcing time is approximately 330ms

The circuit breaker enclosure has been subjected to an internal arc withstand test in accordance to the requirements of IEC 60694: 2002 and IEC 62271: 2003

Standards

BS EN 50123-1:2003 ANSI C37.14: 2002
BS EN 50123-2:2003 ANSI C37.16: 2000
BS EN 50123-6:2003 ANSI C37.20.1: 2002

Applications

Lightning DC switchgear has a wide range of DC applications:
 

  • Transport: Traction (Heavy & Light Railways / Mass Rapid Transit & Tram Systems)
  • Airports
  • Ports
  • Industry
  • Mining applications
  • Military applications

get in touch

Contact HSS

+44 (0)1495 223001

+44 (0)1509 611511

+ 61 7 3888 2333

what we've done

case studies

SSEN - Horizon Framework

Electricity Northwest Ltd - MediPark