ZN73D Indoor AC High Voltage Vacuum Circuit Breaker

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Basic Info.
  • Brand Name: Nanyue 
  • Model No.: ZN73D-12 
  • Place of Origin: Yunnan  
  • Min.Order: 1 Set/Sets
  • Means of Transport: Ocean, Land
Supply Capacity
  • Production Capacity: 100000
  • Packing:Export Standard package
  • Delivery Date: Delivery in 5 work days after payment

ZN73D-12 Model indoor AC high-voltage vacuum circuit breaker is a type of indoor HV switchgear of rated voltage 7.2-12kV, three-phase AC 50/60Hz. The VCB conforms to GB/T 1984 High voltage AC vacuum circuit br eaker,JB3855 3.6-40.5kV indoor AC HV vacuum circuit breaker and IEC62271-100 standard. The VCB can operate frequently with good on-off capability and fast reclose capability. The VCB structure is separate into two parts thatcan either steadily installed or fabricated on the chassis frame as a separate handcart

Ambient condition

1. Altitude: 1000m;
2. Ambient temperature: 25 ~+40 ;
3. Relative humidity: daily average 95 , monthly average 90 ;
4. Earthquake intensity: 8 degree;
5. Applicable occasions should free from inflammables, explosives, corrosives
and severe vibration

Product feature

1. Holistic structure
2. Sealed spark chamber
3. Effective vacuum arc-extinguish
4. Good mechanical behavior
5. Various mounting approach

1rated voltagekv12121240.540.5
2rated currentA12501600200016002000
3rated short circuit breaking currentKA31.531.531.52531.5
4Dynamic and stable current (peak)KA10010010080100
5Thermal stability of 4 s 
current 50 ka (3 s)
6The rated short circuit close
current (peak value)
7Rated short circuit breaking
current times

Send message to this supplier
Ms. Sandra (Sales Manager)
Tel: 86-136-29698649
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Contact Method
Yunnan Nanyue Electric Power Equipment Co., Ltd.
Xiaoshao Industrial Park, Qidian, Chenggong County, Kunming, Yunnan, China (Mainland) / 650200
Fax: 86-871-65882055
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