Fuji Electric DC High-speed Vacuum Circuit Breaker

Fuji Electric DC High-speed Vacuum Circuit Breaker

Device features

  • Substation maintenance can be greatly streamlined

    With arcless circuit interruption, dramatic reductions in maintenance can be planned, and other maintenance-saving equipment and maintenance cycles can be synchronized.
  • Energy-saving features

    Low loss and low energy operation help to save energy. The dry capacitors used are incombustible and eco-friendly.
  • Large current interruption performance

    The high breaking capacity and faster opening time of the vacuum valve have achieved a 100 kA circuit interruption.
  • Total area interruption performance

    From large to small current, all current can be reliably interrupted. Large load current can also be securely turned on.
  • High operating reliability

    High operating reliability is achieved through redundant configuration of critical components, high noise-resistant design, as well as clarification of periodic replacement parts.

Internal structure of device

Device specifications

Device nameDC high speed vacuum circuit breaker
Applicable standardsJIS E2501-1 (2010) "Railway applications - Fixed installations - DC switchgear - Part 1: General"
JIS E2501-2 (2010) "Railway applications - Fixed installations - DC switchgear - Part 2: DC circuit-breakers"
StructureIndoor-use (outdoor-use) cubicle type switchgear (JEM1425-CW) (draw-out type, main circuit with shutter)
Protection classIP2X
Circuit breaker body typeHX5001X- Mf-DA( : 20, 30, 40)HX10001X- Mf-DA( : 20, 30, 40)
Device typeVDC215-PVDC208-PVDC215-TVDC208-T
Rated voltageDC 1500 VDC 750 VDC 1500 VDC 750 V
Rated voltage4000 V or less2500 V or less4000 V or less2500 V or less
Rated breaking capacity50 kA (at 3×106 A/s)100 kA (at 10×106 A/s)
Maximum cut-off current25 kA or less36 kA or less
Rated current2000A/3000A/4000A
Operating duty cycleO - 10 sec - CO
Rated short-time withstand current1 sec, 75 kA
Current detection methodForward overcurrent detection (built-in reverse current relay function) *
Setting current scale4 kA to 12 kA, 2 kA to 6 kA, 1 kA to 3 kA
Final selection rate50% (Configurable to use or exclude)
Closing operation methodElectric-spring method, 1.7 A, 2 sec
Contact opening methodElectromagnetic repulsion drive system
Commutation methodCapacitor commutation method
Arc suppression methodEnergy absorption method using zinc oxide elements
number of
Mechanical opening and closing10,000 times
Short-circuit current interruption100 times
Main circuit5500 V AC, 1 min; lightning impulse 20 kV
Control circuit1500 V AC, 1 min; lightning impulse 4.5 kV
Insulation distanceAir gap 30 mm, Creepage distance 50 mm or more
Rated operation and control voltageDC 100 V, DC 110 V
Rated auxiliary power voltageSingle-phase 210 V AC
Contact configuration3a+3b (External use)
Switching capacity5 A (DC 100 V, DC 110 V)

*: Bi-directional overcurrent detection type can also be manufactured.

Circuit breaker main body

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