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

ZN12-12 Indoor high voltage vacuum circuit breaker

ZN12-12 Indoor high voltage vacuum circuit breaker
Product Detailed
high voltage vacuum circuit breaker 1.Imported 3AF type spring operating structure 2.Mechanical life:20000 times; 3.12kv

 ZN12-12 Series Indoor high voltage vacuum circuit breaker

Ambient conditions

1.Ambient temperature: max +40°C min -15°C(conveyance under -30°C is allowed).

2.Altitude: ≤1000m.

3.Relative humidity: daily average relative humidity: ≤95%; monthly average relative humidity≤90%; daily average saturated vapor pressure ≤2.2*10-3 MPa; monthly average value   ≤1.8*10-3 MPa.

4.Earthquake intensity: ≤8 degree.

5.The installation should be free from fire, explosion, severe vibration, chemical corrosion and serious pollution.

Mechanical characteristics adjustment data

Rated contact stroke mm 11±1

Contact overtravel mm 8±2

Average opening speed m/s 1.0~1.8

Average closing speed m/s 0.6~1.1 0.8~1.3 0.8~1.3

Contact bouncing duration at closing operation ms ≤2

Core distance between phases mm 210,230,250,275

Three-pole simultaneity ms ≤2

Condactive circuit resistance of each phases μΩ <40

ZN12-12 Indoor high voltage vacuum circuit breaker

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