Model NO.: ZW10-12
Poles Number: 3
Type: Circuit Breaker
Function: Conventional Circuit Breaker
Certification: ISO9001-2000, CCC
Trademark: Shentong
Transport Package: in Wooden Case
Specification: 12KV
Origin: Yueqing City
HS Code: 8535210000
Advantages:Â Â Â Â Â Â Â Â Â Â Â Â Â Â 1.Our Company Has Great Reputation In Domestic Market.
              2.Good Quality Guaranteed With Reasonable Price.
              3.OEM, ODM Are Welcomed.
              4.Goods Will Be Delivered On Time.
              5.Factory Selling Directly
Description
ZW10-12 series AC high voltage vacuum circuit breaker can be used in the  AC 50Hz,  rated voltage 12kV three-phase electric net.  Break and close load,  with overload and short-circuit protection. The control and protection device for grid net.
Suitable for the rural & city electric network, rail & port distribution systems and frequent operation places.Â
Using Condition
1. Ambient temperature: -40ºC~+40ºC   2. Altitude below 2000m
3. Wind pressure ≤700Pa(Wind Speed is 34m/s)
4. Relative diary average temperature ≤95%, monthly average≤90% Â
5. Air pollution: III Class
Features
1. 3 phases posts structure, reliable breaking capacity, no burning or explosive danger, free-maintenance, small volume, long service life.
2. Whole sealing structure. Vacuum arc-blowing chamber, operation systems are sealed in the case.
3. Small spring operation mechanism.
4. Manual or electri type operation of close & open of breaker.
Specification
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| Rated Voltage | 12KV | |
| Rated short-circuit breaking current | 16KA, 20KA | |
| Power frequency withstand voltage(1 min) | phase, to ground | 42KV |
| fracture | 48KV | |
| Lightning impulse withstand voltage | phase, to ground | 75KV |
| fracture | 85KV | |
| Rated current | 630,1250A | |
| Rated short-circuit CO power source(peak) | 40KA, 50KA | |
| Rated peak withstand current | 40KA, 50KA | |
| Rated short-circuit current breaking times | 30 times | |
| Rated operation voltage match CT23 spring operation mechanism | breaking & making coil: DC/AC 220V | |
| Moving contact admitted abrasive thickness | 3mm | |
| Rated Frequency | 50HZ | |
| Overcurrent release rated current | 5A | |
| Current transformer primary, secondary current rate(normal) | 200/5, 400/5, 630/5, 1000/5, 1250/5 | |
| Average breaking speed | 1.2±0.2m/.s | |
| Average breaking speed | 0.6±0.2m/.s | |
| Rated short-circuit making current(peak) | 50, 63KA | |
| Rated operating order | O-0.3s-CO-180s-CO(electric mechanism) | |
| Mechanical life | 10000 times | |
| Energy-storge motor rated voltage | DC/AC 220V | |
| Energy-storge motor rated power | 70W | |
| Energy-storge time | ≤8s | |
Outline and mounting dimension
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