ZN73D-12 Model indoor 3 phase AC high-voltage vacuum circuit breaker

FOB Reference Price:Get Latest Price
US $550-650 / Set | 1 Sheet/Sheets (Min. Order)
Supply Ability:
3000 Set/Sets per Year
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Quick Details
Place of Origin:
China (Mainland)
Brand Name:
Model Number:
Poles Number:
indoor vacuum circuit breaker
Packaging & Delivery
Packaging Details
package details:standard international package ,proper for any special customer air or sea requirements ,one set one case
Delivery Time
according to your quantity and type

ZN73D-12 Model indoor 3 phase AC high-voltage vacuum circuit breaker

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









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Company Information

Beijing Daelim Green EP Tech Co., Ltd. is mainly engaged in the import & export of electric products and equipment. Our business team has more than 15 years' foreign business experience, and also has a unique understanding of electrical products and overseas markets. We have established and extended business relationships with customers and partners in Southeast Asia, the Middle East, Europe, Africa, North America and South America.
The main products and equipment we are dealing with: power transformer, current transformer, potential transformer, vacuum & SF6 circuit breaker, load break switch, disconnector, switchgear panel, power plant, transmission line equipment.
We always provide reasonable prices, high quality products, timely shipment and efficient services to develop our cooperation with all of our customers. We are trading in accordance with international traditions and practices. We would like to extend business with our customers and partners on the basis of cooperation and mutual benefit.





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