Updated Sep 17, 2026 · Public platform & industry data

Sep 17, 2026 Updated

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2026 Top 10 Open Circuit Manufacturers in China Shanghai

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Top-rated Open Circuit suppliers, How to choose a Open Circuit manufacturer, Best Open Circuit companies in China

The top 10 Open Circuit manufacturers in Shanghai for 2026 are: Shanghai Qiantuo Trading Co., Ltd, Xiamen Dinglong Electric Co., Ltd, Shanghai Qiantuo Trading Co., Ltd, Shanghai Changkai Electric Appliance Co., Ltd, Shanghai Xida Electric Power Technology Co., Ltd, Shanghai Linglian Automation Control Technology Co., Ltd, Shanghai Maizi Industrial Control Equipment Co., Ltd, Jingjixin (Shanghai) Trading Co., Ltd, Shanghai Xurong Electric Co., Ltd, Leqing Kexu Electromechanical Co., Ltd. Ranked based on product relevance, certifications, company activity, and industry performance. This list is widely used for supplier comparison and sourcing decisions.

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ShanghaiShanghai
Top 1
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Shanghai Qiantuo Trading Co., Ltd
Overall Score4.9 / 5
Est. Date2008-09-18
Registered Capital2000K CNY

Shanghai Qiantuo Trading Co., Ltd., with its registered address at Room 713, Lane 99, Jiayong Road, Jiading District, Shanghai, is registered with the Jiading District Market Supervision Bureau. The legal representative is Dan Rongbing, and its business scope includes the sale of mechanical equipment, hardware tools, instruments and meters, electronic components, chemical raw materials (excluding hazardous chemicals, monitoring chemicals, fireworks and firecrackers, civilian explosives, and precursor chemicals), building decoration materials, computers and accessories, lighting appliances, automotive and motorcycle accessories, daily necessities, metal products, textiles, and office supplies. It engages in the import and export of goods and technology. Projects that require approval by law must be approved by relevant departments before conducting business activities. Core products: Open Circuit, Rotate The Handle, Boosting Cylinder Piston

Top 2
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Xiamen Dinglong Electric Co., Ltd
Overall Score4.8 / 5
Est. Date2023-02-15
Registered Capital5000K CNY

Xiamen Dinglong Electric Co., Ltd., with its registered address at Room 405, No. 270 Fangyang North Road, Maxiang Street, Xiang'an District, Xiamen City, is registered with the Market Supervision Administration of Xiang'an District, Xiamen City. The legal representative is Tong Rongmei, and the business scope includes general projects: sales of electrical equipment; Manufacturing of electrical signal equipment devices; Electrical equipment repair; Sales of electrical signal equipment devices; Research and development of household appliances; Manufacturing of distribution switch control equipment; Sales of distribution switch control equipment; Research and development of distribution switch control equipment; Retail of hardware products; Sales of water quality pollutant monitoring and detection instruments and meters; Sales of specialized instruments and meters for agriculture, forestry, animal husbandry, and fishing; Sales of electrical instruments and meters; Sales of specialized instruments and meters for environmental monitoring; Sales of instruments and meters; Sales of intelligent instruments and meters; Manufacturing of electrical instruments and meters; Manufacturing of specialized instruments and meters for environmental monitoring; Sales of environmental emergency detection instruments and meters; Electronic product sales; Wholesale of electronic components; Retail of electronic components; Sales of capacitors and their supporting equipment; Manufacturing of capacitors and their supporting equipment; Sales of mechanical and electrical equipment; Manufacturing of mechanical and electrical equipment; Sales of household appliances; Sales of power electronic components; Home appliance installation services; Manufacturing of power electronic components; Sales of optoelectronic devices; Manufacturing of optoelectronic devices; Sales of electronic vacuum devices; Sales of electronic measuring instruments; Sales of integrated circuit chips and products; Sales of display devices; Sales of photovoltaic equipment and components; Sales of electronic components and electromechanical equipment; Sales of electronic specialized equipment; Sales of electronic specialized materials. (Except for projects that require approval according to law, conduct business activities independently based on the business license in accordance with the law).. Core products: Open Circuit, Shanghai Liangxin Miniature Circuit Breaker, Weilun Tong Touch Screen

Top 3
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Shanghai Qiantuo Trading Co., Ltd
Overall Score4.8 / 5
Est. Date2008-09-18
Registered Capital2000K CNY

Shanghai Qiantuo Trading Co., Ltd., with its registered address at Room 713, Lane 99, Jiayong Road, Jiading District, Shanghai, is registered with the Jiading District Market Supervision Bureau. The legal representative is Dan Rongbing, and its business scope includes the sale of mechanical equipment, hardware tools, instruments and meters, electronic components, chemical raw materials (excluding hazardous chemicals, monitoring chemicals, fireworks and firecrackers, civilian explosives, and precursor chemicals), building decoration materials, computers and accessories, lighting appliances, automotive and motorcycle accessories, daily necessities, metal products, textiles, and office supplies. It engages in the import and export of goods and technology. Projects that require approval by law must be approved by relevant departments before conducting business activities. Core products: Open Circuit, Directional Control Valve, Bar Code Scanner

TOP4
Shanghai Changkai Electric Appliance Co., Ltd
Overall Score4.7 / 5
Est. Date2014-06-16
Registered Capital10000K CNY

Shanghai Changkai Electric Appliance Co., Ltd., with its registered address at Room 2871, Building 2, No. 1899 Guangtai Road, Fengxian District, Shanghai, is registered with the Market Supervision Administration of Fengxian District. The legal representative is Yang Panpan, and the business scope includes the sales of high and low voltage electrical products, industrial automation equipment, electromechanical equipment, electronic products, power tools, electronic components, instruments and meters, rubber and plastic products, hardware and electrical equipment, research and development, design, manufacturing, sales, installation and maintenance of low-voltage electrical appliances and accessories, mechanical equipment and accessories, molds, engaged in import and export business of goods and technology, technical services, technical consulting, technical development, and technology transfer in the field of electrical and electrical technology. Projects that require approval by law must be approved by relevant departments before conducting business activities. Core products: Open Circuit, Ceramic/Composite Wall Sleeve, Porcelain Insulator

TOP5
Shanghai Xida Electric Power Technology Co., Ltd
Overall Score4.7 / 5
Est. Date2013-10-25
Registered Capital60000K CNY

Shanghai Xida Electric Power Technology Co., Ltd., with its registered address at Room 2356, No. 58 Fumin Branch Road, Hengsha Township, Chongming District, Shanghai (Shanghai Hengtai Economic Development Zone), is registered with the Chongming District Market Supervision Bureau and represented by Liu Jianchang as the legal representative. Its business scope includes the sales of electrical complete sets of equipment and accessories, industrial automation equipment, electromechanical equipment, electrical products, electronic products, instruments and meters, rubber and plastic products, hardware and electrical equipment, and power tools. Its branch offices operate the production and processing of electrical complete sets of equipment and accessories. Projects that require approval by law must be approved by relevant departments before conducting business activities. Core products: Open Circuit, Vacuum Circuit Breaker, Disconnecting Switch

TOP6
Shanghai Linglian Automation Control Technology Co., Ltd
Overall Score4.6 / 5
Est. Date2021-02-01
Registered Capital2800K CNY

Shanghai Linglian Automation Control Technology Co., Ltd., registered at 2nd Floor, No. 479 Songnan Road, Baoshan District, Shanghai, with the registration authority of Baoshan District Market Supervision Administration and the legal representative of Zhang Qiufeng, operates in general projects including technical services, technology development, technical consultation, technology exchange, technology transfer, and technology promotion; Sales of intelligent power transmission and distribution and control equipment; Electronic product sales; Sales of office supplies; Sales of mechanical equipment; Sales of electronic specialized equipment; Sales of power electronic components; Sales of instruments and meters; Operation of wires and cables; Wholesale of hardware products; Sales of electrical equipment; Sales of communication equipment; Sales of labor protection equipment; Retail of computer software, hardware, and auxiliary equipment; Sales of specialized equipment for environmental protection; Sales of rubber products; Sales of metal products; Retail of electronic components; Sales of electrical and mechanical equipment; Sales of specialized testing instruments for textiles; Maintenance of electronic and mechanical equipment (excluding special equipment) (except for projects that require approval according to law, business activities can be carried out independently based on the business license in accordance with the law).. Core products: Open Circuit, Transmitter, Stepper Motor

TOP7
Shanghai Maizi Industrial Control Equipment Co., Ltd
Overall Score4.6 / 5
Est. Date2020-06-22
Registered Capital1000K CNY

Shanghai Maizi Industrial Control Equipment Co., Ltd., with its registered address at Building 4, No. 686 Nanfeng Road, Fengcheng Town, Fengxian District, Shanghai, is registered with the Market Supervision Administration of Fengxian District. The legal representative is Xu Shujin, and its business scope includes general projects such as the sales of industrial control computers and systems; Sales of mechanical equipment; Sales of electronic specialized equipment; Sales of instruments and meters; Sales of communication equipment; Electronic product sales; Retail of electronic components; Wholesale of computer software, hardware, and auxiliary equipment; Retail of computer software, hardware, and auxiliary equipment; Wholesale of hardware products; Retail of hardware products; Sales of valves and plugs; Sales of electrical and mechanical equipment; Sales of office equipment; Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Import and export of goods; Technology import and export (except for projects that require approval according to law, business activities are carried out independently based on the business license in accordance with the law).. Core products: Open Circuit, Sensor, Frequency Converter

TOP8
Jingjixin (Shanghai) Trading Co., Ltd
Overall Score4.6 / 5
Est. Date2019-12-20
Registered Capital1000K CNY

Jingjixin (Shanghai) Trading Co., Ltd., with its registered address at 7K, No. 8519 Nanfeng Road, Fengxian District, Shanghai, registered with the Market Supervision Administration of Fengxian District and represented by Li Lei as its legal representative. Its business scope includes general projects such as wholesale of shoes and hats; Retail of shoes and hats; Wholesale of clothing and apparel; Clothing and apparel retail; Luggage sales; Sales of gold and silver products; Wholesale of jewelry; Jewelry retail; Sales of arts and crafts and ceremonial supplies (excluding ivory and its products); Sales of hair accessories; Clock and watch sales; Glasses sales (excluding contact lenses); Sales of office supplies; Sales of office equipment; Sales of sanitary ware; Sales of household appliances; Sales of mechanical equipment; Sales of communication equipment; Electronic product sales; Wholesale of computer software, hardware, and auxiliary equipment; Retail of computer software, hardware, and auxiliary equipment; Software sales; Wholesale of hardware products; Retail of hardware products; Sales of mechanical and electrical equipment; Sales of electrical equipment; Sales of electrical signal equipment devices; Sales of distribution switch control equipment; Sales of advanced power electronic devices; Sales of charging stations; Sales of electrical instruments and meters; Sales of electrical accessories; Sales of household appliance spare parts; Home appliance installation services; Retail of daily household appliances; Battery sales; Sales of power electronic components; Sales of electrical equipment; Sales of photovoltaic equipment and components; Sales of optoelectronic devices; Sales of pneumatic power machinery and components; Sales of seals; Sales of hydraulic power machinery and components; Sales of liquid tight components and systems; Sales of wind and electric tools; Sales of high-performance sealing materials; Sales of bearings, gears, and transmission components. (Except for projects that require approval according to law, conduct business activities independently based on the business license in accordance with the law). Core products: Open Circuit, Valve Positioner, Sensor

TOP9
Shanghai Xurong Electric Co., Ltd
Overall Score4.4 / 5
Est. Date2017-05-18
Registered Capital1000K CNY

Shanghai Xurong Electric Co., Ltd. is registered at Room 2637, No. 70, Lane 818, Xianing Road, Jinshan Industrial Zone, Shanghai. The registered authority is Jinshan District Market Supervision Bureau, and the legal representative is Lian Dongmei. Its business scope includes technical development, technical consulting, technical services in the field of electrical technology, electrical engineering installation, electronic components, electrical equipment, household appliances, electrical equipment, computers, software and auxiliary equipment, mechanical equipment, communication equipment, electronic products, hardware and electrical sales, as well as import and export of goods and technology. Projects that require approval by law must be approved by relevant departments before conducting business activities. Core products: Open Circuit, Monitoring Relay, Ac/Dc Contactor

TOP10
Leqing Kexu Electromechanical Co., Ltd
Overall Score4.4 / 5
Est. Date2014-02-24
Registered Capital100K CNY

Yueqing Kexu Electromechanical Co., Ltd., with its registered address in Shangchi Village, Liushi Town, Yueqing City, is registered with the Yueqing Market Supervision and Administration Bureau, and its legal representative is Yueguang Qiong. Its business scope includes the sale of electromechanical equipment and accessories, electrical equipment, high and low voltage electrical appliances and accessories, fasteners, pneumatic components, hydraulic components, power lighting equipment, hardware and electrical equipment, electronic components and accessories, wires and cables, measuring instruments, building appliances, power fittings, industrial automation equipment, electrical complete sets of equipment, office supplies, welding equipment, and daily necessities; E-commerce planning; Import and export of goods and technology.. Core products: Open Circuit, Ac Contactor, Module

Detailed Manufacturer Comparison

ManufacturerEst. DateMain ProductsRegistered CapitalCustomization
Shanghai Qiantuo Trading Co., Ltd2008-09-18Open Circuit, Rotate The Handle, Boosting Cylinder Piston2000K CNYNot Supported
Xiamen Dinglong Electric Co., Ltd2023-02-15Open Circuit, Shanghai Liangxin Miniature Circuit Breaker, Weilun Tong Touch Screen5000K CNYNot Supported
Shanghai Qiantuo Trading Co., Ltd2008-09-18Open Circuit, Directional Control Valve, Bar Code Scanner2000K CNYNot Supported
Shanghai Changkai Electric Appliance Co., Ltd2014-06-16Open Circuit, Ceramic/Composite Wall Sleeve, Porcelain Insulator10000K CNYNot Supported
Shanghai Xida Electric Power Technology Co., Ltd2013-10-25Open Circuit, Vacuum Circuit Breaker, Disconnecting Switch60000K CNYNot Supported
Shanghai Linglian Automation Control Technology Co., Ltd2021-02-01Open Circuit, Transmitter, Stepper Motor2800K CNYNot Supported
Shanghai Maizi Industrial Control Equipment Co., Ltd2020-06-22Open Circuit, Sensor, Frequency Converter1000K CNYNot Supported
Jingjixin (Shanghai) Trading Co., Ltd2019-12-20Open Circuit, Valve Positioner, Sensor1000K CNYNot Supported
Shanghai Xurong Electric Co., Ltd2017-05-18Open Circuit, Monitoring Relay, Ac/Dc Contactor1000K CNYNot Supported
Leqing Kexu Electromechanical Co., Ltd2014-02-24Open Circuit, Ac Contactor, Module100K CNYNot Supported

Purchasing Guide

Based on real user feedback, we provide the following suggestions:

  • For procurement requirements that require the use of circuit breakers, it is recommended to prioritize checking key parameters such as rated current and breaking capacity to ensure compatibility with the load characteristics of the existing power system. In industrial scenarios, short-circuit withstand strength should also be considered.
  • When selecting suppliers, priority should be given to product compatibility, business qualifications, enterprise activity, industry performance, and companies with industry data support. For example, data centers or manufacturing production lines have high requirements for the response speed of circuit breakers and need to be evaluated based on the supplier's past cases.
  • In the upgrade project of the power distribution system, it is necessary to distinguish the application scenarios of circuit breakers. For example, building distribution cabinets focus on compact design, while photovoltaic power stations need to consider special functions such as DC arc protection.
  • When purchasing circuit breakers, industry platforms can be used to compare supplier supply stability with statistical information. It is also recommended to pay attention to whether the enterprise has complete testing reports, but there is no need to excessively pursue non essential high specification configurations.

Knowledge Base

Q

This article will introduce the role and importance of installing arc separators on circuit breakers, as well as how to select suitable arc separators.

Q

An open circuit in an oxygen sensor usually refers to a fault that occurs in the oxygen sensor circuit, causing the oxygen sensor to malfunction. This article will introduce the role of oxygen sensors in automotive operation, the working principle of oxygen sensors, and the performance and handling methods of oxygen sensor circuit breakers.

Ranking Evaluation Method

This ranking is generated based on public data from Baidu B2B platform and common industry assessment dimensions, focusing on enterprise activity, business qualifications, product matching and industry performance to provide valuable manufacturer ranking information for buyers.

DimensionDescription
Data SourceMulti-dimensional data including platform public data, enterprise certification, user reviews, and transaction records
AssessmentComprehensive indicators including enterprise activity, qualifications, product quality, service capability, and user reputation
Update FrequencyRanking data is updated daily to ensure timeliness and accuracy
SuggestionRankings are for reference only. We recommend comprehensive evaluation based on actual needs