Products

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Vacuum Circuit Breaker

MEIDEN vacuum circuit breaker (VCB) employs a proven vacuum interrupter (VI) with excellent interrupting efficiency. It has passed a series of type-tests and is designed, tested and manufactured in accordance with IEC and BS standards under rigorous controls. We are equipped with a very sophisticated and flexible manufacturing setup to make VCB that can withstand operating current up to 2000A. The four major types of VCB and one GIS model are as follow:

Major Types of VCB and GIS

Gas

Type

Vacuum

Rated Voltage (kV)

VJ-12B*

VJ-12

VJ-13

VJ-22

VGC-22

12

15

24

24

Rated Normal Current (A)
Rated Short-Circuit Breaking Current (kA)
Rated Short-Circuit Withstand Current (kA)
Rated Lightning Impulse Withstand Voltage (kV peak)
Rated Frequency (Hz)

630/1250

630/1250/2000

1250/2000

630/1250/
2000

1250

25

31.5

25

25

25 - 3 sec

31.5 - 3 sec

25 - 3 sec

25 - 3 sec

Rated Transient Recovery Voltage kV/ms
Mass (Kg)

O - 0.3S - CO - 3 min - CO

0 - 0.3S - CO-3 min - CO

95

75

125

125

0.34

0.39

0.47

0.47

145/175/245

120/140

185/245

230/250/305

600

50/60

50/60

Rated Break Time(ms)
60
70
70
Rated Opening Time (ms)
40
50
50
Closing Time(ms)
50
50
Rated Operating Sequence(ms)
  • *VJ-12B supersedes and is downward-compatible with VJ-12A. Certain degree of modifications can be made to the breaker. For example, the maximum operating current of a 630A breaker can be increased to 800A without changing the overall physical size. Manufacturing specialists are trained in Meidensha Corporation in Japan to ensure a high quality is achieved and maintained.

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  • "This high performance VCB conforms to IEC-62271-100 and all primary components employed therein are in accordance to the relevant IEC standards. Furthermore, by incorporating it with SF6 gas insulation, the resulted synergy sets a new dimension with regards to reliability, reduced maintenance and smaller space requirement due to its compact design."