Indoor Vacuum Contactor Combination Electrical Appliance Retrofit Solution

The Indoor Vacuum Contactor Combination Electrical Appliance Retrofit Solution is based on our company's VTZ-12 indoor high-voltage vacuum circuit breaker platform. Through optimized structural design, component modifications, and a modular operating mechanism, the retrofit solution is designed to achieve a precise and reliable match with the corresponding VCM vacuum contactor combination electrical appliances. It provides an effective solution for switchgear upgrading and renovation projects, helping customers improve equipment performance while making full use of their existing switchgear infrastructure.

This retrofit case was developed for the replacement and renovation of Mingji Electric's VCM vacuum contactor combination electrical appliances. By adopting a customized configuration and modular design, the existing equipment can be upgraded with minimal structural changes, helping simplify installation and reduce the overall cost and time associated with equipment replacement.

We also provide high-quality alternatives to ABB, Schneider, and Siemens vacuum circuit breakers. Our alternative products are designed to provide comparable performance, reliable operation, and compatibility with relevant applications, while offering a more competitive and cost-effective solution. This allows customers to upgrade or replace existing equipment while achieving an excellent balance between performance, reliability, and overall value for money.

Commitment to Excellence

At Shaanxi West Power Tongzhong Electrical Co., Ltd., our commitment to excellence is reflected in every aspect of our business. From product research and development to manufacturing, quality control, and customer service, we continuously strive to deliver high-quality products and professional solutions that meet the evolving needs of the electrical industry.

We continuously improve our management systems and production processes, attract and develop experienced technical and professional talent, and make full use of high-quality social and industrial resources. By integrating these strengths, we are building a robust and efficient industrial chain covering the R&D, production, testing, and supply of high-quality electrical products.

With a strong focus on technological innovation, product reliability, and continuous improvement, we aim to enhance our manufacturing capabilities and provide customers with stable, efficient, and dependable electrical solutions. Through close cooperation with suppliers, technical partners, and customers, we continue to optimize our resources and capabilities, creating a solid foundation for long-term development and sustainable growth.

Product Specifications

Specification Sheet

No.	Name	Unit	Data
1	Rated Voltage	kV	12
2	Rated Frequency	Hz	50/60
3	Rated current	A	630
4	Rated power-frequency withstand voltage	kV	48(Across the contact gaps ) /42(To ground)
5	Rated lightning impulse withstand voltage	kV	75
6	Rated short-circuit breaking current	kA	31.5
7	Rated-short-circuit making current (peak)	kA	80
8	Rated withstand current (peak)	kA	80
9	Rated duration of short circuit	s	4
10	Operating cycles at rated short-circuit breaking current	Times	E2
11	Mechanical endurance	Times	10000
12	Standard Operating sequence	-	O-0.3s-CO-180s-CO
13	All0wable wearing thickness of contacts	mm	≤3

Mechanical Characteristics

No.	Name	Unit	Data
1	Clearance between open contacts	mm	9±1
2	Over-travel	mm	3.5±0.5
3	Average closing speed	m/s	0.7±0.2
4	Average opening speed(average speed at 6mm of initial opening)	m/s	1.1±0.2
5	Rated added external contact final force	N	3100±200N(31.5kA)
6	Make time	ms	30～70
7	Breaking time	ms	20～50
8	Contact bouncing duration at closing operation	ms	≤2
9	Closing/opening no-simultaneity of 3-phase contacts	ms	≤2

Product Advantages

Retrofit of indoor vacuum contactor combination electrical appliances has many advantages:

Circuit Breaker Performance

E2-C2-M2

This makes it suitable for applications requiring frequent switching, reliable fault interruption, and long-term.
Simple and convenient maintenance

With modular structure, the replacement of closing and opening coils does not require the removal of other components. Users can easily replace them, and no testing and adjustment are required after replacement, making later operation and maintenance more convenient.
High Conductivity

Reasonable design of the conductive circuit ensures that the temperature rise remains within the specified limits at 1.1 times the rated current, providing reliable current-carrying performance. This helps improve the stability and safety of the circuit breaker during continuous operation.
Perfect replacement

This transformation plan can perfectly replace VCM combination electrical appliances, which is easy to maintain and replace, and provides customers with fast and convenient power grid upgrade services.

Product Applications

Retrofit of indoor vacuum contactor combination electrical appliances has many applications:

Power plants

Industrial fields

Power grid systems

Power infrastructures

Product Outline Drawing

china Retrofit of indoor vacuum contactor combination electrical appliances

Secondary Wiring Diagram

Retrofit of indoor vacuum contactor combination electrical appliances for sale

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Products

Indoor Vacuum Contactor Combination Electrical Appliance Retrofit Solution

Product Specifications

Product Advantages

Product Applications

Product Outline Drawing

Secondary Wiring Diagram