The VS1 ZN63A handcart series of indoor high voltage vacuum circuit breakers is a draw-out typeindoor vacuum circuit breakerdesigned for metal-clad switchgear in 7.2–12kV three-phase AC power systems at 50/60Hz. It is widely used to control and protect feeders, transformers, motors and capacitor banks in medium-voltage distribution boards for industrial and commercial facilities.
As a China-based manufacturer, factory and exporter, we supply the VS1 ZN63A indoor vacuum circuit breaker to industrial users, commercial users, electrical contractors, distributors and panel builders for new installations and switchgear retrofits. The handcart structure allows the breaker to be easily racked in and out of the switchgear, simplifying maintenance, replacement and line extension in MV substations and power distribution rooms.
Key features and benefits
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Compact, fully enclosed design with vacuum interrupter and spring operating mechanism, ensuring reliable breaking performance and long service life
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High short-circuit breaking capacity (up to 40kA) and high mechanical endurance (up to 20,000 operations) for frequent switching duty in industrial applications
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Compatible with various types of metal-clad switchgear, suitable for fixed or handcart configurations, and easy integration into OEM/ODM switchgear solutions
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Available for OEM, ODM, private label and white label cooperation, with customized ratings, control circuits and accessories for global manufacturers, distributors and wholesalers
Typical applications:indoor MV switchgear rooms of factories and industrial plants, commercial building substations, utility distribution substations, data centers, mining enterprises and infrastructure projects that require safe and reliable indoor vacuum circuit breakers.
Main Technical Specification
| No. | Item | Unit | Data | ||||||||
| 1 | Ratedvoltage | KV | 12 | ||||||||
| 2 | Ratedfrequency | Hz | 50 | ||||||||
| 3 | Ratedinsulationlevel | 1minpowerfrequencywithstandvoltage | KV | 42 | |||||||
| Ratedlightningimpulsewithstandvoltage | KV | 75 | |||||||||
| 4 | Ratedcurrent | A | 630 | 1000 | 1250 | 1600 | 2000 | 2500 | 3150 | 4000* | |
| 5 | Ratedshort-circuitbreakingcurrent
Ratedshort-timewithstandcurrent(virtualvalue) |
KA | 20 | 20 | 20 | ||||||
| 25 | 25 | 25 | 25 | ||||||||
| 31.5 | 31.5 | 31.5 | 31.5 | 31.5 | |||||||
| 40 | 40 | 40 | 40 | 40 | 40 | ||||||
| 50 | |||||||||||
| 6 | Ratedshort-circuitmakingcurrent(peak)
Rateddynamicstabilitycurrent(peak) |
KA | 50 | 50 | 50 | ||||||
| 63 | 63 | 63 | 63 | ||||||||
| 80 | 80 | 80 | 80 | 80 | |||||||
| 100 | 100 | 100 | 100 | 100 | 100 | ||||||
| 125 | |||||||||||
| 7 | Ratedshort-circuitbreakingcurrentbreakingtime | Times | 50,30(40kAandabove) | ||||||||
| 8 | Ratedshort-circuitduration | s | 4 | ||||||||
| 9 | Ratedoperationsequence | O-0.3s-CO-180s-CO,O-180s-CO-180s-CO (40kAandabove) | |||||||||
Applying ambient conditions
- Ambienttemperature:-10°C~+40°C
- Relativehumidity:theaveragehumidityofadayshouldbenomorethan95%.Theaveragehumidityofamonthshouldbenomorethan90%
- Earthquakeintensity:notexceed8degrees
- Saturatedvaporpressure:theaveragepressureofadayshouldbenomorethan2.2kPa;theaveragepressureofamonthshouldbenomorethan1.8Kpa
- Theheightabovesealevel:≤1000m(Exceptspecialrequirements)
- Itshouldbeinstalledintheplaceswithoutfire,explosion,seriousfilth,andchemicalerosionandviolentvibration
This type vacuum circuit breaker conforms to national standards and the stipulation of IEC standard, the capability reaches grade of M2-E2-C2.The product adopts composite insulation way,spring charged operation and rod push mechanism,with the characteristics of small volume, compact design and reliable operation. It can easily match with the switchgear and meet the “Five Preventions” demands.This kind of vacuum circuit breaker can be used for many kinds of switchgear like KYN28(GZS1). This series ofproductsinclude: VCB truck isolation truck and Fuse truck, etc.