AC vacuum contactors are essential components in medium- and high-voltage electrical systems, widely used in motor control, capacitor bank switching, power distribution, and industrial automation. China has established itself as one of the world’s most active manufacturing hubs for this product category, with suppliers ranging from large conglomerates serving global utilities to specialist factories focused on custom switchgear components.
If you are sourcing AC vacuum contactors and looking to evaluate Chinese suppliers, this guide offers a factual, structured overview of ten notable manufacturers — covering their background, product focus, and key strengths. Suppliers are ordered from highest to lowest market influence.
1. HIITIO
- Founded: 2018
- Core Products: AC Vacuum Contactors, motor control contactors, DC contactors, ESS/EV power components
- Website: https://www.hiitio.com
- AC Vacuum Contactor Product Page: https://www.hiitio.com/product-category/motor-control/ac-vacuum-contactor/
Zhejiang HIITIO New Energy Co., Ltd. is a manufacturer of industrial electrical components with a stated focus on AC vacuum contactors for global markets. The company positions itself as a precision-oriented supplier, emphasizing reliable electrical connections across high-voltage industrial applications, including manufacturing, mining, oil and gas, and power generation.
HIITIO’s operational strategy centers on the application of contemporary manufacturing technology combined with sustainable production practices, aiming to deliver products that comply with evolving international standards. HIITIO actively exports its products and maintains a global customer-facing presence through its English-language website and product documentation.
EXPLORE MORE HIITIO AC VACUUM CONTACTOR
HIITIO’s AC Vacuum Contactor lineup is built around vacuum interrupter technology, designed to deliver precise circuit switching with minimal arc generation. Key performance characteristics include a broad operating range suited to diverse load types, integrated safety features for personnel and equipment protection, and a construction designed for environments prone to dust, heat, or vibration. The product is suited to applications requiring frequent switching cycles, such as motor starters and capacitor switching in industrial substations.
2. CHINT Group
- Founded: 1984
- Location: Wenzhou, Zhejiang, China
- Core Products: Low-voltage switchgear, AC contactors, vacuum contactors, circuit breakers, energy management systems
- Website: https://www.chintglobal.com
CHINT Group Co., Ltd. is one of China’s most widely recognized electrical manufacturers and among the largest in its category globally. Founded in 1984 in Wenzhou, Zhejiang, the company has grown into a multi-division enterprise operating across more than 140 countries and regions, with over 50,000 employees worldwide. CHINT reported operating revenues of approximately USD 25 billion in 2024 and has maintained a position in China’s Top 500 Enterprises list for more than 20 consecutive years.
The company’s product portfolio covers the full spectrum of low-voltage and medium-voltage electrical equipment, from miniature circuit breakers and contactors to complete switchgear assemblies and energy storage systems. CHINT’s global R&D hubs in Asia Pacific, Europe, and North America allow the company to develop products compliant with both IEC and UL standards, supporting procurement across diverse regulatory environments.
3. Delixi Electric
- Founded: 1984
- Location: Liushi Town, Yueqing, Wenzhou, Zhejiang, China
- Core Products: AC contactors, circuit breakers, motor starters, thermal relays, power distribution equipment
- Website: https://www.cn-delixi.com
Delixi Group traces its roots to 1984, when it was established as Yueqing County Switch Factory. Today, Delixi Electric Co., Ltd. operates as a joint venture between Delixi Group and Schneider Electric, formed in 2007, with an investment of approximately RMB 2 billion and a workforce of around 10,000 employees. The company holds roughly a 15% national market share in low-voltage electrical appliances and has participated in the drafting of national industry standards.
Delixi’s distribution and service network spans more than 60 countries, supported by over 40,000 domestic sales outlets, 5 production bases, and 3 R&D centers. Major customers include state-owned energy enterprises and infrastructure operators. The company holds over 850 patents, including 110 invention patents, along with certifications covering CE, CCC, and ISO 9001 / ISO 14001.
4. Liyond Electric
- Founded: 2011
- Location: Yueqing, Zhejiang, China
- Core Products: Medium-voltage vacuum contactors, high-voltage vacuum contactors, switchgear components, vacuum interrupters
- Website: https://www.liyond.com
Liyond Electric is a Yueqing-based manufacturer that focuses specifically on switchgear components, with vacuum contactors as a central product line. Since its founding in 2011, Liyond has concentrated on medium-voltage and high-voltage vacuum contactors for customers across power utilities, industrial plants, and infrastructure projects.
The company holds certifications including ISO 9001, ISO 14001, CE, and IEC compliance, and its technical team maintains international welder qualifications — a relevant credential for products where sealing integrity is critical. Liyond offers OEM services and allows buyers to specify dimensions, materials, pole configuration, and current ratings for custom orders. The company’s products follow GB3906 and IEC298 manufacturing standards, providing a basis for international procurement. Over the past decade, Liyond has supplied components to organizations across Asia, Europe, and the Americas.
5. Greegoo Electric Co., Ltd.
- Founded: 1995
- Location: Liushi, Yueqing, Zhejiang, China
- Core Products: AC vacuum contactors (low voltage & medium voltage), solid state relays, power semiconductors, thyristor modules, IGBT modules
- Website: https://www.greegoo.com
Greegoo Electric Co., Ltd. was established in 1995 and is headquartered in Liushi, Yueqing — one of China’s most concentrated manufacturing zones for electrical components. The company holds ISO 9001 certification and has built a catalog of over 1,000 standard product models across power semiconductors, vacuum contactors, solid state relays, motor protection equipment, and circuit breakers.
nlike many competitors that treat vacuum contactors as a secondary product line, Greegoo has positioned vacuum contactor manufacturing as a core competency, maintaining dedicated engineering resources for this product category for more than 15 years. The company exports to international markets and maintains a well-organized English-language product site with detailed technical specifications for each vacuum contactor model. Greegoo serves OEM buyers, system integrators, and industrial end users across sectors, including mining, energy, and heavy manufacturing.
6. CNC Electric Group
- Founded: 1988
- Location: Liushi Town, Yueqing, Wenzhou, Zhejiang, China
- Core Products: AC contactors, vacuum contactors, high-voltage vacuum circuit breakers, MCBs, MCCBs, ACBs, automatic transfer switches, frequency inverters
- Website: https://www.cncele.com
CNC Electric Group Zhejiang Technology Co., Ltd. was founded in 1988 and operates out of Liushi, Yueqing — one of the most active electrical manufacturing clusters in China. Over more than 35 years of operation, CNC has developed a product portfolio covering more than 100 series and over 60,000 individual product specifications, spanning low-voltage, medium-voltage, and high-voltage electrical equipment.
CNC holds certifications including CE, CB, CCC, and TÜV, and actively participates in major international trade events including the Canton Fair and Hannover Messe — a sign of sustained international market engagement. The company emphasizes renewable energy and smart grid applications as growth areas, with product lines developed for PV grid-connected systems, energy storage, and intelligent distribution. CNC’s broad certification base and long operating history position it as a well-rounded mid-tier supplier for buyers across multiple global markets.
7. Zhiyue Group Co., Ltd.
- Founded: 1993
- Location: China (operations across multiple locations)
- Core Products: Vacuum contactors, vacuum circuit breakers, power capacitors, reactive compensation controllers, high-voltage transformers
- Website: https://www.zhiyue.com
- Vacuum Contactor Product Page: https://www.zhiyue.com/vacuum-contactor
Zhiyue Group Co., Ltd. is a Chinese manufacturer that has been active for over three decades, integrating research, production, trade, and service within a single operating structure. The company’s product scope spans power capacitors, intelligent reactive compensation controllers, vacuum circuit breakers, vacuum contactors, load switches, and high- and low-voltage power transformers.
Zhiyue serves well-known industrial customers across sectors including heavy manufacturing, utilities, and petrochemical industries. The company’s long-term operational continuity in both low-voltage and high-voltage product segments positions it as a multi-category supplier for buyers seeking to consolidate purchasing from fewer vendors. Zhiyue maintains an active technical publication practice, regularly releasing application-focused content on vacuum contactor maintenance and selection — a sign of engagement with end-user technical communities.
8. Aubo Electric
- Founded: Established in Nanjing, Jiangsu
- Location: Nanjing, Jiangsu, China
- Core Products: High-voltage AC vacuum contactors, medium-voltage vacuum contactors, current transformers
- Website: https://www.vfd-softstarter.com
Aubo Electric is a Nanjing-based manufacturer specializing in high-voltage and medium-voltage AC vacuum contactors, with a monthly production capacity of approximately 10,000 units. The company holds ISO 9001 certification and operates as a verified gold-level supplier on major B2B platforms, with a stated policy of 100% pre-shipment product inspection.
Aubo’s product range includes the CKG10kV-160A high-voltage AC vacuum contactor and the JCZ5 series covering 7.2 kV to 12 kV at current ratings from 160 A to 800 A. The top-down structural design of Aubo’s contactors — which separates the high-voltage main circuit from the low-voltage control circuit — is noted for supporting straightforward installation and maintenance access. The company responds to customer inquiries within 12 hours and offers flexible payment terms to support international trade.
Why Choose HIITIO for Your AC Vacuum Contactor Needs?
If you are evaluating AC vacuum contactor suppliers for industrial, mining, power generation, or energy storage applications, HIITIO is worth a closer look. Zhejiang HIITIO New Energy Co., Ltd. combines focused manufacturing expertise with a customer-oriented approach to global supply, making it well-suited for buyers who need reliable, application-ready products backed by responsive technical support.
Get a Quote for HIITIO AC Vacuum Contactors
HIITIO’s AC vacuum contactors are engineered to handle high-voltage switching with precision — incorporating vacuum interrupter technology that delivers consistent arc extinction, reduced maintenance requirements, and long service life across demanding duty cycles. Visit the main website at https://www.hiitio.com to get in touch with the team, request product documentation, or discuss your specific application requirements.
