3AH0 Vacuum Circuit Breaker
The 3AH03 compact and reliable vacuum circuit breakers
consist of three poles incorporating the vacuum interrupters
housed in insulated shell. These poles are then covered
with insulated pole cover from behind to make the design
completely enclosed. The moving contacts of the vacuum
interrupter are connected to the drive mechanism through
insulated connecting rods. Operating mechanism is of
stored energy type and suitable for auto reclosing duty.
The operation can be manual/electrical as desired. 3AH03
Vacuum Circuit Breaker is housed inside 2 mm thick powder
coated sheet metal with fully safety-interlocked door &
bushings for taking further connections by the Partner.
Specification
| Parameter | Value |
|---|---|
| Rated Voltage | upto 36kV |
| One minute power frequency withstand voltage (rms) | 70kV |
| 150 microsecond lightning impulse withstand voltage | 170kVp |
| Rated current | 1250A |
| Short Time Withstand current (3 sec) | 26.3kA |
| Short Circuit Breaking current | 26.3kA |
| Rated making capacity | 65.75kA |
| Rated Operating sequence | 0-0.3sec-CO-3min-CO |
| Single capacitor bank breaking current | 400A |
| Cable charging breaking current | 50A |
| Guaranteed number of operations for vacuum interrupter at rated current | 30,000 |
| Guaranteed number of operations for drive mechanism | 10,000 |
| Is CB restrike free | Yes |
| Type of operating mechanism | Motor Spring Reserve Drive (M.S.R.D.) |
Why Choose Gayatri ?
We have vast experience of 35 Years and having worked in Various Government and Private Sectors like Oil and Natural Gas, ISRO, Municipal Corporation, IOCL, NHPC, Indian Railways, Tourism Industry etc. in the field of High/Low Voltage infrastructural Development/ Power Up gradation to downstream Lighting and Power Distribution with integrated Solutions for Computer Network, Data and Voice, Fire Access, Surveillance and Security System, Stage Lighting, Auditorium etc.
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