• Sourcing Solutions
  • Services & Membership
  • Help & Community

Quick Details

  • Place of Origin: Beijing, China (Mainland)
  • Brand Name: daelim
  • Model Number: ZN28-12
  • Type: High Voltage
  • Poles Number: 3

Packaging & Delivery

Packaging Details one set one case
Delivery Time within 45 days after received payment

  ZN28-12 series indoor high voltage vacuum circuit breaker



ZN28-12 series indoor high voltage vacuum circuit breaker (hereinafter referred to as the "circuit breaker") is a three-phase ac 50 hz, rated voltage of 12 kv indoor switchgear components, circuit breaker conforms to the national standard GB1984-1989 ac high voltage circuit breaker, and the international electrotechnical commission standard IEC60056 high voltage circuit breaker and other relevant provisions of the standard. Circuit breaker installed mainly in metal enclosed type sheathed cabinet, for industrial and mining enterprises, power plants and substations for electrical facilities, control and protection, and is suitable for frequent operation.


product feature


1.This product is a fixed type switchgear dedicated vacuum circuit breaker, ribbon gymnastics mechanism itself (the user can choose according to actual need CT - 19 electromagnetic spring institutions or CD), the internal operation mechanism is installed on frame, connected to the spindle by the connecting rod, the operation mechanism to ensure the spindle rotation of 58 ° + 1 °, the mechanical properties and technical parameters should meet the requirements of table


2. Sealing type and longitudinal magnetic field in the product is installed in the vacuum arcing chamber, spindle, break-brake spring and oil buffer components are installed inside the frame, frame of the bottom is equipped with mounting holes, for the use of circuit breaker is installed. Framework after 6 PCS insulator surface


3. insulator is fixed on the bracket, bracket of insulator under fixed static, dynamic and static bracket of the back-end and make wire terminals. Vacuum arc extinguish chamber installed between dynamic and static bracket, spindle turn through the insulation rod, arm connected to the vacuum arcing chamber, between dynamic and static bracket was also equipped with two insulating rod, and the two together as a whole, improving overall strength.


technical specifications


1rated voltagekv12
2rated currentA1250 1600
3rated frequencyhz50
4Rated short circuit breaking current KA20 31.5
5Rated short-circuit making current KA63 80
6Rated short circuit breaking timesTIME20
7mechanical lifeTIME10000
8Capacitor Banks open circuit current ratingA630
9Energy-storage motor rated powerW275
10Energy-storage motor rated voltageVAC 220/DC 110


product pictures


Transaction History of the Supplier

Below is the information about the supplier's transactions conducted via Alibaba.com. If you require further details regarding the transaction data, please contact the supplier directly.

Transaction Overview


Transaction Details

This supplier has completedtransactions with buyers from .

Shipping Destination
Transaction Value
Transaction Date
Email to this supplier
Trade Assurance
China (Mainland) | Trading Company
Transaction Level:
Supplier Assessments:
16 Transactions 300,000+
The supplier’s transactions conduted via Alibaba.com in the past 6 months.
The supplier supports Trade Assurance – A free service that protects your orders from payment to delivery.
Supplier's Trade Assurance Limit: US $249,000
Learn More