VS1-12 1250A vacuum circuit breaker with lateral operating mechanism is an indoor switchgear with a rated voltage of 12kV and an AC 50/60Hz. It features an integrated frame operating mechanism and is suitable for various industrial and mining enterprises, as well as power grid equipment, and is mainly suitable for urban power supply ring main units.

VS1 VCB with lateral operating mechnism

Product Specifications

Specification Sheet

No.	Name	Unit	Data
1	Rated Voltage	kV	12
2	Rated Frequency	Hz	50/60
3	Rated Current	A	630/1250/1600
4	Rated Power Frequency Withstand Voltage	kV	48(Across the Contact Gaps) / 42(To Ground)
5	Rated Lighting Impulse Withstand Voltage	kV	75
6	Rated Short-Circuit Breaking Current	kA	25/31.5
7	Rated Short-Circuit Making Current (Peak)	kA	63/80
8	Rated Withstand Current (Peak)	kA	63/80
9	Rated Duration of Short-Circuit	s	4
10	Operating Cycles at Rated Short-Circuit Breaking Current	Cyles	E2
11	Mechanical Endurance	Times	10000
12	Standard Operating Sequence	-	O-0.3s-CO-180s-CO O-180s-CO-180s-CO
13	Allowable Wear Thickness of Contact	mm	≤3

Mechanical Characteristics

No.	Name	Unit	Data
1	Clearance between Moved and Fixed Contact	mm	9±1
2	Contact Overtravel	mm	3.5±0.5
3	Average Closing Speed	m/s	0.7±0.2
4	Average Opening Speed (Average Speed of First Opening at 6mm)	m/s	1.1±0.2
5	Rated Contact Pressure	N	2500±200N(25kA) 3100±200N(31.5kA) 4800±300N(40kA) 6000±500N(50kA)
6	Closing Time	ms	35～70
7	Opening Time	ms	20～50
8	Contact Bouncing Duration at Closing Operation	ms	≤3
9	No-Simultaneity of Closing/Opening Operations of 3-Phase	ms	≤2

Product Advantages

VS1-12 1250A vacuum circuit breaker with lateral operating mechanism has many advantages:

Performance of circuit breaker:

E2-C2-M2

Stability and reliability:

it adopts the most mature frame-integrated spring operating mechanism, with over 20 years of market usage experience, ensuring safety, reliability, and high market recognition.

High applicability:

the switch three-phases are arranged from inside to outside, allowing the cabinet depth to be minimized to 900mm, making it suitable for various environments. The circuit breaker can be equipped with mechanical interlocks, facilitating interlocking with the cabinet's isolating switch and grounding switch, thereby enhancing safety.

Excellent insulation performance:

the main conductive circuit adopts APG high-strength epoxy resin composite insulated cylinder, which exceeds the IEC standard in terms of insulation performance.

Products Application

VS1-12 1250A vacuum circuit breaker with lateral operating mechanism has many applications:

Ⅰ

Urban community distribution systems

Ⅱ

Mobile substation equipment

Ⅲ

Industrial and mining enterprises

Products overall outline drawing

VS1-12 Vacuum Circuit Breaker with Lateral Operating Mechanism manufacturer

Note: There are multiple options for the VS1-12 with lateral operating mechanism circuit breaker. The primary conductive circuit main wiring can be on the left or right side. The VS1-12 with lateral operating mechanism circuit breaker can also extend the main shaft to the left or right side, installing the corresponding parts for cabinet interlocking. In addition, the VS1-12 with lateral operating mechanism circuit breaker can extend the opening mechanical operation lever to the left or right at the top, facilitating the connection to the cabinet to meet the respective operational safety requirements for users.

Products secondary wiring principle drawing

VS1-12 Vacuum Circuit Breaker with Lateral Operating Mechanism factory

core product and after-sales and service

Core product :

Among many offerings, our core product - VTZ Series Vacuum Circuit Breakers stand out for their exceptional quality and performance. Maintenance-free and with a service life of up to 20 years, these products set a new standard in the industry and are known for their simple structure, high reliability, low power consumption and long service life. Meeting and exceeding global standards, They are extensively exported to Central Asia, Southeast Asia, South America, Europe, and other regions.

After-sales and Service:
We are committed to providing exceptional after-sales support to our global customers. Our services include worldwide technical support and warranty coverage, such as online remote technical support, video training, and on-site installation guidance. During the warranty period, we respond quickly to equipment defaults, and provide repair or replacement services, with the option to extend warranties as needed. To ensure effective communication, we also offer multilingual support and provide a comprehensive feedback mechanism that allows us to track customer satisfaction and continuously improve our service quality.

why choose us

Excellence in research and development
Innovation is at the core of our business. We have independently developed the VTZ Series Vacuum Circuit Breakers and continue to invest in research and development to meet the evolving needs of the electrical industry. Our R&D team consists of senior technical experts with decades of experience in the design and manufacture of high and low voltage electrical equipment. Their expertise, combined with our advanced facilities, allows us to stay ahead of industry trends and continually optimize our product offerings.

Advanced manufacturing and production
We operate one of the most advanced and standardized assembly line manufacturing facilities in the industry, equipped with the latest technology, enabling us to produce a wide range of high quality electrical products with precision and efficiency. Wecomply with GB 1984-2024 and GB/T11022-2020 standards to ensure the highest quality. Our commitment to excellence is reflected in the durability, reliability, and compatibility of our products.

Adapting to industry trends
Guided by our strategic development plan, we continuously adapt our products to align with the latest trends in smart grids, power system automation, and high altitude environments. Our leading high-current, high-voltage, and long-life products are designed to meet the rigorous demands of today's power systems, providing our customers with reliable, maintenance-free solutions that stand the test of time.

Wide range of products
We offer a wide range of products, including indoor and outdoor vacuum circuit breakers, switchgear, low voltage switch equipment, and various electrical accessories. Each product is designed to meet the specific needs of our customers, and can operate stably in urban distribution networks, industrial melting, new energy power generation, rural power supply and other places, and can still maintain excellent reliability even in harsh environments

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VS1-12 1250A Vacuum Circuit Breaker With Lateral Operating Mechanism