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ECLIPSE (630/1250A) - 12kV Fixed Pattern Indoor Metal Enclosed Vacuum Switchgear

A market leader in 12kV switchgear, the Eclipse is designed to provide a lifetime of unrivalled service, bringing together one of the most advanced operating mechanisms available on the market today – the award winning magnetic actuator technology – with vacuum interruption and the simplicity of air insulation in a compact, fixed pattern design.

Appreciated throughout the distribution network and across every business sector, the Eclipse currently holds a dominant market position for indoor 12kV switchgear.

  • Superior, proven Fit & Forget technology with minimal maintenance
  • The fixed pattern design had the simplicity of air insulation and, with the low parts count (the total parts count has been reduced by a factor of x20 and the number of moving parts by a factor of x50), is more compact (500mm wide) than equivalent rated GIS equipment

    Spring Charged

    Magnetic Actuator

  • Environmentally friendly vacuum interrupters
  • Internal Arc containment
  • Superior operator safety with a fully interlocked design, animated front panel mimic and a front access cable test facility, ensuring secure but simple operation
  • Voltage Presence Indication System (VPIS) is fitted as standard to all panels (circuit)
  • Reliable control – supplied with an integral control module, providing indication, trip circuit supervision and self-diagnostics
  • Customers choice of protection

Dimension (In mm)

  • Dimensions for a standard Eclipse feeder/incomer panel; (a) 1162 (b) 2165 (c) 500
  • Dimensions for a standard Bus-section panel; (a) 1162 (b) 2165 (c) 1000
  • Dimensions for a Busbar earthing switch; (c) 325
  • Dimensions for a single panel with Busbar VT; (b) 2500
  • Dimensions for top entry cable; One cable per phase - (a) 1482
  • Three cables per phase - (a) 1812

Eclipse Engineering Detail

  1. Sleeved busbars constructed from hard drawn, high conductivity copper, and vermin proof covered joints, 1 with normal current ratings up to 2000A. The busbar arrangement permits future expansion, at either end of 2 the switchboard.
  2. Fully interlocked, manually operated 3-position disconnector including circuit earth and front panel cable test access. The disconnector can be secured and 4 padlocked in all three positions: ‘on’, ‘off’ and ‘earth on/ test’, with its status indicated by animated front panel mimics.
  3. A single moulding supports the three phase vacuum interrupter assembly, magnetic actuator mechanism and 6 one-piece drive beam. 5
  4. The patented single coil magnetic actuator mechanism is based on a solenoid plunger, held in the tripped or closed position by permanent magnets.
  5. Three phase cast resin voltage transformer, with manually operated off-load disconnector on the primary circuit.
  6. Generous CT accommodation enables complex protection schemes to be catered for in a single panel, whilst still allowing for a metering provision. The CT designs are rated in keeping with the short time withstand level of the equipment and comply with IEC 60044-1.

Unique Front Access Cable Testing Option:

  1. Avoids any contact with Live cables or busbars.
  2. Eliminates the need for Opening of rear covers to access live cables.
  3. Provides secure & mechanically interlocked front access contacts points to connect cable test equipment.
  4. Colour coded and suitably labelled copper contacts eliminates risk of improper connections during testing live cables.

Rated Normal Current A 630/1250
Rated Voltage kV 12
Rated Frequency Hz 50
Rated BIL pk kV 75
Rated Power Frequency Withstand kV 1min 28
Rated Short-Time Withstand Current kArms 3secs 25
Rated Peak Making Current pk kA 50/62.5
Internal Arc Compliance kA 1sec 25
Rated Short Circuit Breaking Current kA 20/25
Degree of Protection * IP4X

*Higher Ratings available on request

Auxiliary Operating Supply 125/110/48/30V dc
Typical Weight Range 500 - 650kg
Busbars 1250A

Normal Service Conditions:

Ambient air temperature -5ºC to +55ºC
Relative humidity <95%
Altitude <1000m


  • IEC 62271-200, IEC 62271-100, IEC62271-102, IEC 62271-1
  • ENA TS 41-36
Switching Station Transport Applications Seconday Substation applications MOD
Industrial Hospitals Education Commercial

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Copyright 2012 HS Switchgear FZCO.