Tengfei Electric Co., Ltd.
Main products:Meter Box,Distribution Box,Electrical Enclosure
Contact Us
  • Contact Person : Mr. Wu Fandy
  • Company Name : Tengfei Electric Co., Ltd.
  • Tel : 86-577-6278 6208
  • Fax : 86-577-6277 9136
  • Address : Zhejiang,Wenzhou,17# Tengfei Rd, Dongfeng Industrial Zone, Liushi Town, Yueqing City, Wenzhou, Zhejiang, china
  • Country/Region : China
  • Zip : 325604

ZW8-12 Outdoor high voltage vacuum circuit breaker

ZW8-12 Outdoor high voltage vacuum circuit breaker
Product Detailed
Outdoor high voltage vacuum circuit breaker 1.CE,RoHS approved; 2.12kV,50Hz; 3.Best price; 4.New design and good quality.

ZW8-12 Series Outdoor high voltage vacuum circuit breaker

Technical parameters

Main Technical Data    
Rated voltage                                                              kv12
Rated lighting impulse withstand voltage  kvInterphase or to ground 75,fructure 80
Rated short-time power frequency withstand voltage(dry)     kvInterphase or to ground 42,fructure 48
Rated short-circuit breaking current                               kA2531.540
Rated current                                                               A







Rated thermostability current(valid) kA2531.540
Rated dynamic stability current(peak)   kA 6380100
Rated short-circuit making current(peak)                               kA6380100
Rated operations of short-circuit breaking current interruption   times50(40kA is 30)
Rated working current of overcurrent and tripping coil A5
Rated operating sequence                                             

0-0.3-CO-180s -CO/


Mechanical life                                           times10000
Rated current of auxiliarate switchAAC10,DC5
Rated voltage of energy saving release vAC,DC220       AC,DC110
Closing time ms≤75
Opening time ms≤60(40)
Power of energy saving motorw275
Energy saving times≤15
Mechanical life                                           times20000

Mechanical characteristics adjustment data

1.Rated contact stroke mm 11±1;

2.Contact overtravel mm 8±2;

3.Average opening speed m/s 1.0~1.8;

4.Average closing speed m/s 0.6~1.1 0.8~1.3 0.8~1.3;

5.Contact bouncing duration at closing operation ms ≤2;

6.Core distance between phases mm 210,230,250,275;

7.Three-pole simultaneity ms ≤2;

8.Condactive circuit resistance of each phases μΩ <40.


ZW8-12 Outdoor high voltage vacuum circuit breaker

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