• Sourcing Solutions
  • Services & Membership
  • Help & Community

Quick Details

  • Place of Origin: Beijing, China (Mainland)
  • Brand Name: daelim
  • Model Number: ZN28A-12
  • Type: High Voltage
  • Poles Number: 3
  • Rated frequency: 50/60 Hz
  • Rated current: 630A
  • Rated voltage: 12KV
  • Mechanical Life: 10000 Times
  • Standard: IEC60898.2
  • Certificate: ISO9001
  • Model: ZN28A-12
  • Pole: 3
  • type: 12/40.5 kV vacuum circuit breaker
  • Material: Ceramic

Packaging & Delivery

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

ZN28A-12 series of rated voltage 12/40.5 kV vacuum circuit breaker





ZN28A-12 series of rated voltage 12/40.5 kV vacuum circuit breaker, three-phase ac 50 hz indoor high voltage switch equipment, is the introduction of Germany's Siemens technology products. The structure of circuit breaker Simple open circuit ability, long service life, operating function is all ready, no explosion danger, convenient maintenance, suitable for power plant, substation and other electric power transmission and distribution system of control or protection switch, especially in open circuit important place of load and frequent operation. Our products comply with GB1984-89 standard for ac high voltage circuit breaker.


product feature


Flexible operation, convenient:

this product can be electric energy storage, electric switch, can also be hand machine, manual, switching function, and can be close or far away from the remote control;

 Open circuit performance is superior, the breaking short circuit current of 25 ka for 30 times;

 Operating power is small, high reliability: the new design of miniaturized electric spring mechanism, part number and energy-storage motor is rated power (around 40 w) reduce to the lowest level; Flexible installation, can be used in a column on lifting or sit installations;

Maintenance-free characteristics: the main loop of the circuit breaker, the secondary components, operating mechanism are sealed in the SF6 gas pressure (zero table),

not influenced by the external environment, stable performance, reliable, free maintenance;


technical specifications


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


product pictures




Our Services

1. We offer the best solution and products to fulfill the buyers' requirments.

2, We can arrange technicians to install the equipments and train your staff on site.

3, Anytime, we provide considerate technical consultation.

4, Prompt reply for your inquiry and feedback.

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 provide competitive 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..



1.Why choice us Daelim

After compare quality,delivery and price you will find out answer


2. Is that possible to be one of distributor of Daelim in my country

Yes,once you action is fast enough


3,More question......

Feel free to contact you you will get immediately reply



Whatsapp: 13718556307


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