Pole mounted auto recloser vacuum circuit breaker 

high quality vacuum circuit breaker supplier from China, HV 12KV indoor & ourdoor ZW32, ZW8, ZW20,VS1,

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Indoor high-voltage vacuum circuit breaker

VS1 (ZN63) - 12 indoor high voltage vacuum circuit breaker, three-phase ac 50 hz, rated voltage of 12 kv power system of indoor switchgear, as power equipment, industrial and mining enterprises, power protection and control unit. Apply to working in the rated electric demand flow frequent operation, or more open circuit short circuit current.
The circuit breaker operating mechanism and circuit breaker unibody design of ontology. Either as a fixed installation unit, also can equipped with feed mechanism, form a handcart unit.

Using the environment conditions

Ambient air humidity: cap + 40 ° ℃, lower limit - 15 ° ℃
* height: < 1000 m (if need higher elevation, the rated insulation level increase)
Amplitude: the earthquake intensity is not more than 8 degrees
Air relative humidity, average no greater than 95%, on average no greater than 90%
No fire and explosion danger, serious pollution, chemical corrosion and the site of violent vibration
Specification

Item
Description
Unit
Data
1
Rated voltage
KV
12
2
Max. voltage
KV
12
3
Rated current
A
630/1250/2000A/4000A
4
Rated short circuit breaking current
KA
20/25/31.5/40
5
Rated short circuit making current
KA
50/63/80/100
6
Rated peak withstand current
KA
50/63/80/100
7
4S Rated withstand current
KA
20/25/31.5/40
8
Rated insulation level
Power frequency voltage(when losing a circuit)
KV
Dreaker 42
Impulse withstand voltage(when losing a circuit)
Dreaker 75
9
Rated operating sequence

OC-0.3s-CO-180S-CO
10
Mechanical life
Times
20000
11
Rated short circuit current breaking time
Times
50
12
Rated close brake voltage of operating machnie
V
110,220
13
Rated break brake voltage of operating machnie
V
110,220
14
Contact stroke
mm
11±1
15
Exceed range(the compress length of contact sping)
mm
3.5±0.5
16
Different period of three-phase break and close break
ms
≤2
17
The jump time of contact close break
ms
≤2
18
Average break speed
m/s
0.9~1.2
19
Average closing speed
m/s
0.5~0.8
20
opening time
Ubder max.operating voltage
S
≤0.05
Under min.operating voltage
≤0.08
21
Closing time
s
0.1
22
Resistance of each phase main loop
μΩ
≤40
23
Contacts limit ersion
mm
3


Outdoor high-voltage vacuum circuit breakers:

ZW32-12 type outdoor high voltage vacuum circuit breaker(also named as vacuum switch)  is rated voltage 12kV, three-phase AC 50Hz outdoor distribution equipment, which is mainly used for breaking, closing power system load current, overload current, short-circuit current. For substation and industrial and mining enterprises distribution system for the protection and control of the role and place of rural power grids frequent operation.
The circuit breaker has small size, light weight, anti-condensation, maintenance-free characteristics, can adapt to poor weather conditions and dirty environments.
The models with permanent magnet operation mechanism operates: since the permanent action energy operating mechanism provided by a permanent magnet, the switch quickly to keep the points off position, a small number of mechanical parts, mechanical transmission chain is short, thus greatly improving the switch reliability and mechanical life.


Vacuum circuit breakers are named for their high vacuum arc extinguishing medium and the insulation medium between the contacts after arc extinguishing. They are widely used in power distribution networks due to their advantages of small size, light weight, suitability for frequent operations, and no need for maintenance after arc extinguishing. Vacuum circuit breakers are indoor distribution devices in 3-10 kV, 50 Hz three-phase AC systems. They are used for protection and control of electrical equipment in industrial and mining enterprises, power plants, and substations. They are particularly suitable for places that require oil-free operation, minimal maintenance, and frequent operations. The circuit breakers can be installed in switchgear, double-layer cabinets, and fixed cabinets for controlling and protecting high-voltage electrical equipment.

Power Safeguarded: Indoor and Outdoor High-Voltage Vacuum Circuit Breakers

Indoor and outdoor high-voltage vacuum circuit breakers are two commonly used types of circuit breakers in power systems, each serving a distinct purpose in different environments. Here is a brief introduction to them:

Indoor high-voltage vacuum circuit breaker

s:

  • Installation location: Indoor high-voltage vacuum circuit breakers are typically installed in indoor distribution equipment rooms, switchyards, or control cabinets.

  • Key features: They are used to protect and control high-voltage power lines, substations, and distribution systems. Indoor high-voltage vacuum circuit breakers utilize vacuum as the arc extinguishing medium and swiftly interrupt circuits in the event of overcurrent, short circuit, or other faults to safeguard equipment and personnel.

  • Application scope: Indoor high-voltage vacuum circuit breakers are suitable for medium to small-sized substations, industrial complexes, commercial buildings, and other indoor environments. They are compact, lightweight, and designed for frequent operations and compact spaces.

  • Popular Models: VS1-12 indoor high-voltage vacuum circuit breaker/withdrawable type, fixed type

Rated voltage12KV
Rated frequency50Hz
Rated current630A-1250A
Mechanical life≥10000
Type modelZN63A-12(VS1)
Typehandcart / Fixed / Side-mounted
Product Keywordsvacuum circuit breaker(vcb)

Outdoor high-voltage vacuum circuit breakers:

  •  Installation location: Outdoor high-voltage vacuum circuit breakers are specifically designed for outdoor environments and are typically installed in power transmission lines, substations, or outdoor switchgear.

  • Key features: Outdoor high-voltage vacuum circuit breakers provide protection and control functionalities in power systems and can operate reliably under harsh outdoor conditions. They possess features such as dust-proof, waterproof, and weather-resistant capabilities, enabling them to interrupt circuits effectively and prevent further fault propagation and equipment damage.

  • Application scope: Outdoor high-voltage vacuum circuit breakers are applied in power transmission lines, substations, and locations where power distribution and control take place outdoors. They are designed to meet the unique requirements of outdoor environments, ensuring high reliability and adaptability.

  • Popular Models: ZW32, ZW8ZW20series...

The above information is for reference only. We need to select the appropriate circuit breaker based on the customer's installation method, local voltage, current, and other parameters.


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Hebei Liebang Electric Technology Co. LTD was established in 2000, located in Hebei, China, covering an area of 20,000 square meters, is a group integrating R&D, manufacturing, sales and service. Our products cover many fields such as transformers, switch cabinets, electricity meters, wires and cables, and are widely used in construction, energy, communication and other industries.The company has its own technology research and development team. All products can be individually designed according to structural, mechanical and electrical principles. With advanced production equipment, testing equipment, production line and computer network control system, it is a leading domestic power equipment manufacturer in terms of product production, component selection and assembly. It has also passed ISO9001, ISO14001, ISO45001, CQC, test report and other quality system certifications, and the credit rating AAA certificate.We sincerely invite you to visit our factory for guidance and negotiation, and to explore potential cooperation opportunities.

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