Engineering Sophisticated AC Vacuum Contactors for Global Markets

The AC vacuum contactor is an essential industrial control product designed to effectively manage electrical circuits in vacuum conditions. With a focus on precision and reliability, it excels in controlling high-voltage circuits. Its robust design and advanced technology make it a crucial component for a wide range of industrial applications, contributing to the efficiency of modern manufacturing processes.

1500V 630A AC Vacuum Contactor 3

HIITIO AC Vacuum Contactors

Zhejiang HIITIO Energy Co., Ltd is a premier manufacturer of industrial equipment that ranks highly globally. We have dedicated ourselves to producing exceptional AC Vacuum Contactors that have revolutionized industrial operations, delivering unmatched reliability, precise control, and enhanced safety. Our strategy centers around the utilization of cutting-edge technology and sustainable practices in the manufacturing process, thereby yielding products that address the evolving industry standards and customers’ needs. Our ultimate goal is to be the assured source of innovative, efficient, and reliable industrial solutions for our worldwide clientele.

Our high-end AC vacuum contactors are designed with advanced technology and fitted with numerous features offering superior performance. These contactors are praised for their exceptional reliability which helps in enhancing the overall operational efficiency.

The accurate circuit control offered by our products presents a unique ability to optimize equipment performance by precise circuit switching in a vacuum environment.

Besides offering precision, our AC vacuum contactors also provide enhanced operational safety, making them crucial for high-voltage applications in various industries.

At Zhejiang HIITIO Energy Co.,Ltd, we understand the crucial role of dependable industrial tools for successful business operations. As such, our AC vacuum contactors are ingeniously crafted to guarantee reliable electrical connections, a key feature celebrated by our global customer base.

The utility of our products extends to various high-voltage applications, making them suitable for different industries. Our ability to cater to such a broad market asserts our leadership in the provision of reliable industrial solutions.

Furthermore, we constantly endeavor to upgrade our products in line with the evolving industry demands and standards, hence our celebrated position in the competitive sphere of industrial equipment manufacturing.

Innovation, efficiency, and sustainability form the pillars of our operational structure at Zhejiang HIITIO Energy Co.,Ltd. We dedicate our resources to developing products that grant our customers a competitive advantage in their respective fields.

The robust design of our AC vacuum contactors is befitting for utilization in diverse harsh industrial environments, reinforcing the longevity of your operational tools and consequently, minimizing operational costs.

By choosing our products, you are investing in a sustainable competitive edge that will enhance the profitability of your business venture, owing to our relentless dedication in providing the optimal industrial solutions.

Features of HIITIO AC Vacuum Contactor

Vacuum Interrupter Technology

Our AC Vacuum Contactors utilize vacuum interrupter technology, providing excellent arc-quenching capabilities and minimizing contact wear. This results in an extended product lifespan and reliable performance.

High Voltage Ratings

Designed to handle high-voltage ratings, our contactors are suitable for demanding applications that require robust electrical equipment. They provide stable and secure power distribution, reducing the risk of electrical faults and downtime.

Compact Design

Our AC Vacuum Contactors are compact, allowing for easy installation and integration into existing electrical systems. This feature is particularly beneficial for applications with limited space availability.

Low Maintenance

With vacuum interrupter technology, our contactors cross out the need for regular maintenance, reducing downtime and associated costs. This feature makes them a cost-effective and hassle-free solution for industrial operations.

Safety Features

Our contactors incorporate various safety features, including overcurrent and short-circuit protection, guaranteeing the protection of both the equipment and personnel. This enhances operational safety and minimizes the risk of accidents.


Revolutionary Industrial Equipment

With a strategic focus on delivering state-of-the-art AC vacuum contactors, we revolutionize how industries perform globally.

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Exceptional Reliability

We ensure that our AC vacuum contactors are extremely reliable, ensuring optimized equipment performance all the time.

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Precise Control

Our products guarantee precise circuit switching in a vacuum environment for improved operational safety.

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Enhanced Safety

Our high-voltage applications have robust designs providing stable electrical connections and maximum safety.

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We adopt an innovative, efficient, and sustainable approach towards all our industrial solutions.

Applications of High Voltage Contactors


AC Vacuum Contactors are extensively used in manufacturing industries to control motors, pumps, compressors, and other high-voltage equipment. They ensure reliable and efficient operation, contributing to smooth production processes.


In the mining industry, AC Vacuum Contactors are employed to control heavy-duty machinery such as crushers, conveyors, and hoists. These contactors provide robust electrical switching capabilities, enabling safe and efficient mining operations.

Oil and Gas

AC Vacuum Contactors play a crucial role in the oil and gas industry, where they are used to control pumps, compressors, and other equipment in drilling rigs, refineries, and pipelines. Their reliable performance and safety features are essential for maintaining uninterrupted operations in these critical environments.

Power Generation

AC Vacuum Contactors are utilized in power generation plants to control generators, transformers, and other high-voltage equipment. They ensure stable power distribution and protect the electrical system from faults, contributing to the reliable generation of electricity.

Water Treatment

AC Vacuum Contactors are commonly employed in water treatment facilities to control pumps, valves, and other equipment involved in the treatment and distribution of water. Their precise circuit control and safety features help maintain the efficiency and reliability of water treatment processes.

Renewable Energy

With the increasing adoption of renewable energy sources such as wind and solar power, AC Vacuum Contactors are used to control inverters, transformers, and other equipment in renewable energy systems. They enable efficient power conversion and distribution, contributing to the integration of clean energy into the grid.

Industrial Automation

AC Vacuum Contactors are an integral part of industrial automation systems, where they control various electrical components and machinery. They provide reliable switching capabilities, ensuring seamless integration and operation of automated processes.

What is An AC Vacuum Contactor?


AC Vacuum Contactors are electrical switching devices designed for high-voltage applications. They are used to control the flow of electrical power in industrial equipment, providing reliable and efficient operation. These contactors utilize vacuum interrupter technology to provide precise circuit control and exceptional safety features.

3600V 630 500A AC Vacuum Contactor 3

How it Works: 

AC Vacuum Contactors consist of several key components that work together to control the flow of electrical power. These components include:

Vacuum Interrupter: 

The vacuum interrupter is the heart of the contactor. It is a sealed chamber containing a pair of contacts that open and close to control the electrical circuit. The vacuum inside the interrupter eliminates the presence of air or other gasses, protecting efficient arc quenching and reducing contact wear.


The coil is an electromagnetic component that generates a magnetic field when energized. This magnetic field attracts the moving contacts, causing them to close and complete the electrical circuit. When the coil is de-energized, the contacts open, interrupting the circuit.

Auxiliary Contacts: 

AC Vacuum Contactors often include auxiliary contacts that provide additional control functions. These contacts can be used for signaling, interlocking, or other purposes, enhancing the overall functionality of the contactor.

When an electrical power supply is connected to the coil, it generates a magnetic field that attracts the moving contacts, closing the circuit. This allows electrical power to flow through the contactor and supply the connected equipment. When the coil is de-energized, the magnetic field dissipates, causing the contacts to open and interrupt the circuit, thereby stopping the flow of electrical power.

Additional Information:


AC Vacuum Contactors are widely used in various industries, including manufacturing, mining, oil, and gas, power generation, and more. They are suitable for controlling motors, transformers, capacitors, and other high-voltage equipment.


AC Vacuum Contactors offer several advantages over other types of contactors. The vacuum interrupter technology ensures efficient arc quenching, resulting in minimal contact wear and extended product lifespan. They also require low maintenance, reducing downtime and associated costs.

Safety Features:

AC Vacuum Contactors incorporate various safety features to protect both equipment and personnel. These features may include overcurrent protection, short-circuit protection, and arc suppression, ensuring a safe working environment.

Standards and Certifications:

Our AC Vacuum Contactors are designed and manufactured to meet international standards and certifications, providing their quality, reliability, and compliance with industry regulations.

By utilizing AC Vacuum Contactors, industries can achieve precise circuit control, enhance operational safety, and ensure the reliable operation of their high-voltage equipment.

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