Contact Arm for VCB

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Why Choose Us

Our R&D: 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, enables us to always lead industry trends and continuously optimize our product portfolio.

Quality control: We are able to accurately and efficiently produce a wide range of high-quality electrical products that comply with GB 1984-2024 and GB/T11022-2020 standards to ensure the highest quality.

Customization requirements: We know that our customers' needs are different, so each product can be designed according to the specific needs of the customer.

Our services: In the pre-sales stage, our team of experts will recommend the most suitable products according to the needs of customers and provide detailed technical consultation. During the sales period, we ensure timely delivery and provide installation guidance. For after-sales, we provide long-term technical support, warranty services and spare parts to help customers maximize the use of products and get reliable maintenance during use.

Advantages of Contact Arm for VCB

Efficient current transmission

Connecting contacts: The contact arm serves as the crucial link between the movable contact (such as a tulip contact) and the fixed contact within the vcb.

Arc management and reliability

By utilizing suitable materials with good arc resistance, the contact arm can withstand the intense heat and erosion caused by arcing during current interruption.

Withstanding stress

The contact arm's mechanical strength and resistance to wear and tear enable it to withstand the significant mechanical stress associated with frequent switching operations.

Specification of Contact Arm for VCB

No.	Name	Unit	Data
1	Rated voltage	kV	24
2	Rated current	A	630/1250/1600/2000/2500/3150
3	Material		Copper-aluminum combination/pure copper
4	Lenth (L)	Mm	298-304

Types of Contact Arm for VCB

Single-pole: The single-pole copper contact arm is streamlined for single vcb configurations. They ensure efficient circuit interruption. It bears the load and facilitates seamless switching. Its simplicity makes it ideal for low-voltage applications.

Multi-pole: As the name suggests, multi-pole arms accommodate several poles in the mechanism. Thus, they are ideal for more intricate, multi-phase systems. Common configurations include two or three poles.

Parallel configuration: Sometimes, more than one contact arm is necessary for a pole. This setup is common in high-power scenarios. Here, the ampacity has to go hand-in-hand with the electrical load. The parallel configuration arms distribute the electrical load evenly.

Spare/backup arms: Spare arms are an additional safety measure. They serve as replacements in case of failure. They are usually made from durable materials, such as premium quality steel and aluminum, for long-lasting use. Installation is easy and straightforward, becoming an instantly winning feature.

Hybrid arms: They merge several materials to create a copper-contact surface on one side. The steel base ensures structural integrity and longevity. In contrast, the copper surface optimizes conductivity. These arms are ideal for systems requiring both strength and high electrical performance.

Features of Contact Arm for VCB

Contact arm for vacuum circuit breaker is used for withdrawable indoor high-voltage vacuum circuit breaker, suitable for rated voltage power equipment, and is an important component of the electrical system. It is mainly used to connect and operate the contacts in electrical equipment. It is usually used together with the static contact and the moving contact to form a part of the switch or circuit breaker.

During the opening and closing process of the circuit, moved contact will contact or separate with the fixed contact, and the contact arm plays the role of connecting and operating these contacts. Its surface treatment requires processes such as silver plating, heat shrinkage, and vulcanization.

Application of Contact Arm for VCB

01/

Maintaining interlocking: Ensure that all operations related to opening or closing the VCB are performed in accordance with any interlocking procedures.

02/

Monitoring: Continuously monitor the operation status and external parameters.

03/

Environmental checks: For VCBs in harsh environments, confirm periodically that the conditions do not impact their operation or lifespan.

04/

Temperature: Ensure that the components are working in acceptable temperature levels where they are not exposed to excessive heat or cold beyond their specified operating range.

Packing and Shipping of Contact Arm for VCB

Packing	Box
Shipping	Shipped by road, sea, rail

FAQ

Q: How does one know if the vacuum circuit breaker contact arms should be replaces?

A: Some of the signs that indicate that the circuit breaker should be replaced include the ones where there are increased electrical and mechanical stresses, during thermal expansion or contraction, and environmental conditions, and age factors.

Q: Are there any typical symptoms of quality issues?

A: Yes, there are some quality-related symptoms. One of the most common quality-related issues is electrical faults. These can be seen as irregular operation, false tripping, or failure to operate when needed.

Q: How often should vacuum circuit breaker contact arms be monitored?

A: The operating environment and type of application determine how often the vacuum circuit breaker contact arms should be monitored. For instance, plants with high dust concentration or extreme chemical temperatures like chemical and steel plants require more frequent monitoring than other places.

Q: Do VCBs work well at high altitudes?

A: Yes, vacuum circuit breakers work well at high altitudes because they utilize a vacuum as their insulating medium, which does not decrease with altitude. Altitude does not affect the vacuum; hence, VCB remains an extremely reliable option for switching and controlling high-voltage gear at high altitudes.

Q: How does one protect against mechanical hazards when working with VCBs?

A: The most important thing is to wear proper PPE such as PPE such insulating gloves and safety glasses and always properly lockout VCBs before maintenance.

We're professional contact arm for vcb manufacturers and suppliers in China, specialized in providing high quality products and service. If you're going to buy customized contact arm for vcb, welcome to get more information from our factory.

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