40.5kV embedded pole is an individual component consisting of 40.5kV vacuum interrupter and conductive connectors encapsulated in a solid insulating material. The main advantages are simple structure, fewer removable parts, high reliability and high insulation capacity. The embedded pole is made of epoxy resin curing the vacuum interrupter and conductive terminals into one unit through the APG process.

40.5 kv embedded pole supplier

Product Specifications

Specification Sheet

No.

Name

Unit

Data

Voltage Parameters

1	Rated Frequency (fr)	Hz	50/60
2	Rated Voltage (Ur)	kV	40.5
3	Rated Short-Time(1 min) Power Frequency Withstand Voltage (Ud)	kV	95
4	Rated Lightning Impulse Withstand Voltage (Peak) (Up)	kV	185

Current Parameters

1	Rated Current (Ir)	A	630/1250/1600/2000/2500/3150/4000
2	Rated Short-Circuit Breaking Current (Isc)	kA	25/31.5/40
3	Operating Cycles at Rated Short-Circuit Breaking Current	Times	30
4	Rated Short-Time Withstand Current (Ik)	kA	25/31.5/40
5	Rated Duration of Short-Circuit (tk)	s	4
6	Rated Withstand Current (Peak) (Ip)	kA	63/80/100
7	Rated Short-Circuit Making Current (IMC)	kA	63/80/100
8	Rated Short-Circuit Breaking Current DC Component	%	40
9	Standard Operating Sequence	mm	O-0.3s-CO-180s-CO O-180s-CO-180s-CO(≥40kA)

Mechanical Parameters

1	Mass of Moving Parts	kg	3.2~3.5
2	Self-Closing Force of Contact	N	200±50~230±100
3	Rated Contact Pressure	N	2700±200~4700±100

Requirements for Switch Mechanical Characteristics

1	Clearance between Moved and Fixed Contact	mm	19±1
2	Average Opening Speed (from 75% of the contact gap to contact closed position)	m/s	1.7±0.3
3	Average Closing Speed (from 30% of the contact gap to contact closed position)	m/s	0.8±0.2
4	Contact Closing Bounce Time	ms	≤2
5	Closing and Opening Non-Simultaneity of Contacts	ms	≤2
6	Contact Opening Rebound Amplitude	mm	≤2

Lifespan

1	Storage Period	Years	20
2	Mechanical Endurance	Times	10000
3	Allowable Wear Thickness of Contact	mm	3

Product Advantages

The modular design with fewer removable parts ensures a simple structure and reliable performance.

①High Reliability

Surface insulation is transformed into volume insulation, which reduces the effect of environmental factors compared to air insulation and greatly increases the insulation strength.

②Enhanced Insulation Strength

Strong resistance to environmental pollution, especially excellent in reducing the use of SF6 gas, contributing to the goal of zero greenhouse gas emissions.

③Environmental Protection

‌Product Applications

40.5kV embedded pole is particularly suitable for power, machinery, chemical, metallurgy, mining, and other sectors operating under all working conditions, with a rated voltage of 12kV and a frequency of 50Hz/60Hz.

Products Description

1250A-2000A

2500A-3150A

4000A

why choose us

Shaanxi West Power Tongzhong Electrical Co., Ltd. is a leading manufacturer with over 20 years of experience, specializing in high quality 7 to 40.5kV vacuum circuit breakers, switchgears, and a wide range of electrical products. Our advanced manufacturing process ensures reliable, durable solutions, especially our VTZ series vacuum circuit breakers, which are maintenance-free for up to 20 years. With a team of expert technicians, we excel in R&D, manufacturing, and after-sales service for both high and low voltage equipment, delivering excellence at every stage.

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.

Reliable Vacuum Circuit Breakers, Customized for Global Clients

Professional Technical&Sales Team | On-Time Delivery

12KV/24KV/40.5KV vacuum circuit breakers

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Shaanxi West Power Tongzhong Electrical Co., Ltd.

As a specialized vacuum circuit breaker and relative accessories manufacturer in China, we have profuse designs of ABB and Siemens with series VCB, our price is very competitive because we are a manufacturer, we are the source.

We have more than 20 years of experience in this industry, our VCB are widely export to Southeast Asia, Central Asia and South Amercia, Europe etc.

Successful Participation At The Bengaluru Power Exhibition

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