10kV indoor high-voltage isolation truck is a key device for medium-voltage power distribution systems, usually installed in metal-clad removable switchgear of models such as KYN28A-12. Its main function is to isolate and segment the circuit in the power system, ensure safe power-off during equipment inspection and maintenance, and support flexible withdrawal or push-in for easy operation and maintenance. The isolation trolley does not have the arc extinguishing capability of the circuit breaker and needs to be used in conjunction with the circuit breaker.
The main assembly size is consistent with the VS1 circuit breaker trolley, which is convenient for switchgear design, manufacturing, installation and maintenance; the isolation trolley is equipped with a 220V (optionally 110V) AC/DC dual-purpose locking device; the chassis trolley can be configured with S8 and S9 auxiliary switches, and each auxiliary switch can be equipped with up to 6 docking points according to different user needs; the secondary part of the trolley adopts a 58-pin aviation plug socket.

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Use environment and conditions

Ambient temperature: not higher than +40℃, not lower than -25℃ (storage and transportation at -30℃ is allowed);
Relative humidity: daily average value ≤95%, monthly average value ≤90%, daily average value of saturated vapor pressure ≤2.2×10-3MPa, monthly average value ≤1.8×10-3MPa;
Altitude: ≤1000 meters;
Earthquake intensity does not exceed 8 degrees;
No fire, explosion danger, serious dirt, chemical corrosion and severe vibration

Mechanical Characteristics

Item	Parameters data
Rated voltage	12kV
Rated current	630A/1250A/1600A
Rated short-time withstand curren(4s)	20kA/25kA/31.5kA
Rated peak withstand current	50kA/63kA/80kA
Mechanical life	≥3000 times
Isolation break distance	≥150mm(Meet insulation requirements)
Protective level	IP2X(After installation in the cabinet)

Safe and reliable

Multiple interlocking protection, eliminating the risk of misoperation, in line with the "five protection" requirements.

Stability and reliability:

Standardized interface, compatible with mainstream switch cabinet models, strong interchangeability.

Long life

Silver-plated contact, strong anti-oxidation ability; mechanical parts are wear-resistant and adaptable to frequent operations.

Convenient maintenance

Withdrawable design, quick separation of faulty units, reducing power outage time.

Ⅰ

Incoming, outgoing, and busbar isolation in 10Kv power distribution system;

Ⅱ

Power supply isolation of high-voltage motors and transformer circuits;

Ⅲ

Power distribution protection for key facilities such as data centers and hospitals.

10Kv Indoor High Voltage Isolation truck supplier

Why Choose Us

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Our Mission and Vision

Since our founding, we have been driven by a mission to revolutionize power transmission and distribution systems. Our vision is to expand our international market share and establish our VTZ brand as a symbol of quality and innovation in the electrical industry. We are committed to becoming a global leader, known for our dedication to advancing technology, ensuring quality, and prioritizing customer satisfaction.

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.

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.

Honors And Certifications

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