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This section provides an overview for earth-leakage circuit breakers as well as their applications and principles. Also, please take a look at the list of 22 earth-leakage circuit breaker manufacturers and their company rankings. Here are the top-ranked earth-leakage circuit breaker companies as of December, 2024: 1.HV Hipot Electric Co., Ltd., 2.AISO Electric, 3.Zhejiang Sentai Electrical Apparatus Factory.
Table of Contents
Engaged in research on nitride semiconductor growth using the MBE method at Waseda University Graduate School. After graduating from graduate school in 2016, he joined a non-ferrous metal manufacturer.
Engaged in equipment maintenance and engineering work at metal smelting plants. Moved to a chemical manufacturer in 2022. Engaging in similar tasks.
An earth-leakage circuit breaker (ELCB) is an electrical safety device used to protect people from electrical leakage.
By connecting an earth-leakage circuit breaker plug to an electrical outlet, it is possible to prevent personal injury caused by electrical leakage from electrical equipment and appliances. In some household distribution boards, breakers without a leakage current function are used.
If leakage current occurs from electrical equipment or appliances, there is a risk of personal injury. Using an earth-leakage circuit breaker to connect to the equipment can prevent these accidents. In addition, electrical leakage can cause fires. An earth-leakage circuit breaker can also reduce the risk of fire because it detects leakage and shuts off the power supply.
However, when using an earth-leakage circuit breaker, it is important to verify proper specifications and standards. Incorrect selection may result in a risk of incorrect functioning.
Earth-leakage circuit breakers are used in a variety of applications. In general, they are often used for household appliances.
Earth-leakage circuit breakers are used for electrical appliances and home electronics used in the home. Refrigerators, washing machines, and microwave ovens are typical examples. They reduce the risk of electric shock and fire due to electrical leakage and improve home safety.
In offices and commercial facilities, earth-leakage circuit breakers are often connected to printers, telephones, and other office automation equipment. This prevents electrical shock accidents and ensures a safe working environment.
Electric tools are frequently used on construction sites. These tools require high power and may cause electrical leakage. By using an earth-leakage circuit breaker, the power supply of the tools can be protected and the workers can be protected from electric shock.
The principle of an earth-leakage circuit breaker is to detect a leakage and cut off the power supply. A leakage current detector is often incorporated to detect leakage current. The leakage current detector uses a sensor that detects differences in the current.
The RCD compares the current from the power supply to the equipment with the current from the equipment to the power supply. Normally, these two currents should flow the same amount, but when a leakage current occurs, a leakage current is generated. This difference is detected by the leakage current detector.
The leakage current is detected when the difference in current exceeds a certain set value. The set value is generally a few mA to a hundred mA. This set value is appropriately set based on the risk of electric shock or fire.
When an earth-leakage circuit breaker is detected, the shutdown mechanism in the earth-leakage circuit breaker is activated and the power supply is immediately disconnected. This will stop the power supply to the circuit or device where the leakage has occurred, reducing the risk of electric shock or fire.
When selecting an earth-leakage circuit breaker, the following factors should be considered:
The main purpose of an earth-leakage circuit breaker is to detect leakage and shut off the power supply. However, earth-leakage circuit breakers with overcurrent protection are also available. The presence or absence of an overcurrent protection function should be considered when purchasing a plug.
The number of poles in an earth-leakage circuit breaker refers to the number of pins in the plug. Generally, it is 2 or 3 poles. In order to select the proper number of poles, it must match the requirements of the electrical equipment or appliance being used and the number of poles in the outlet to which it is connected.
The voltage rating of an earth-leakage circuit breaker indicates the voltage range of the power supply suitable for normal operation. It should be matched to the appropriate voltage range for the electrical equipment and appliances used. For general household use, the voltage is 100V or 200V, with 100V being the most common.
The current rating of an earth-leakage circuit breaker plug is the maximum current that the plug can handle. It is important to select a plug with a current rating higher than the total current consumption of the electrical equipment used. Failure to select an appropriate current rating may result in burnout or other failures.
The sensitivity current of an earth-leakage circuit breaker is the set value of sensitivity for detecting leakage current. Most common earth-leakage circuit breaker products have a sensitivity current of several mA to 20 mA. Since the ground fault current at the time of an accident varies depending on the situation, it is safer to use a product with a smaller sensitivity current.
Some earth-leakage circuit breakers may be classified into high-sensitivity, intermediate-degree, and low-sensitivity types.
*Including some distributors, etc.
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Ericson Manufacturing, founded in 1918 and headquartered in Willoughby, Ohio, USA, is a manufacturer in the industrial sector. The company specializes in job lighting, portable power, and pendant power and control. Its range encompasses commercial-grade lighting, wiring devices, weatherproof cover and receptacles, and power transformation units. As an OEM specializing in commercial and custom electrical solutions, the company has secured various NSNs and directly supported five federal agencies. It has a long-established track record within the military, including the DLA, Navy, and Air Force. It also offers COTS and custom Fabrication solutions explicitly tailored to the needs of each federal client.
Fuji Electric Corp. of America, originally founded in 1970 in the USA, is a distributor of products manufactured by the Fuji Electric Group throughout North America and the Americas. The company provides electric solutions for energy, industrial systems, social systems, power electronics, and electronic devices. Fuji Electric Corp. of America offers a wide range of products, such as inverters, circuit breakers, ring compressors, flow meters, and power generators. The company's systems include applications for passenger door automation systems and turbine power generation systems.
HV Hipot Electric Co., Ltd., established in 2003 and based in Wuhan, China, is a manufacturer of electrical safety testing equipment. The company specializes in high voltage testing equipment and tests various kinds of electrical products, such as transformers, circuit breakers, surge arresters, generators and insulators. It also produces products like transformer, switch-gear, electric energy and battery test equipment, partial discharge measurement device and relay protection tester. The company provides OEM and customization services as well as inspection, maintenance and calibration services for its test equipment.
WenZhou Hawai Electron & Electric Manufacture Co. Ltd., founded in 1989, is a manufacturer of waterproof, smart electrical products for medium- and high-voltage power applications based in Zhejiang, China. The company produces circuit breakers, power stations, and surge protection devices for the power generation, transportation, and storage industries. The company has earned ISO 9001:2008, SEMKO, ISO 14000, SAA, and CB certifications, and also provides certifications for testing, factory inspection, research tests, and bidding qualifications.
Shihlin Electric & Engineering Corp., founded in 1955 and headquartered in Taipei City, Taiwan, is a manufacturer of MCCB (molded case circuit breaker) circuit breaker systems and components. The company's main products include rugged circuit breakers, magnetic switches, and power distribution systems, with notable clients that include TSMC, GE, and Mitsubishi Electric. It has expanded its operations to include industry upgrades for low-voltage electrical breaker switchgear and circuit breaker systems. These products are used in renewable and traditional energy systems for industrial and infrastructural installations.
Geya is an electrical equipment manufacturer established in China in 2007. It produces electrical control devices, low voltage protection devices, solar energy equipment, and circuit breaker SKDs in compliance with CE, UL, and other international certification standards. The company's ISO 9001-certified factory has a production capacity of over 100,000 parts per month, it offers OEM and ODM services for the development of custom solutions, and it exports to over 30 countries.
Terasaki Electric Co., Ltd., established in 1923, and headquartered in Osaka, Japan, is a manufacturer and a supplier of motor control systems, circuit breakers, and electronic devices. The company offers a diverse range of products such as marine systems like power distribution systems, control and monitoring systems, and more. It also provides circuit breakers including molded case and air circuit breakers, as well as medical devices and engineering & lifecycle services. The company adheres to ISO13485 certification for medical devices and complies with other industry standards such as JIS and IEC for its products.
Hitachi, Ltd was established in 2002 and headquartered in Chiyoda-ku, Tokyo is a manufacturer of industrial electrical equipment and system solutions. The company offers an extensive and diversified product portfolio including industrial drive systems, power electronics, energy-related equipment, power distribution systems, and various other industrial solutions. These products serve as integral components that drive advancements in industrial capabilities across diverse sectors by playing a pivotal role in promoting energy conservation and storage, automating robot systems in large factories, enabling smarter manufacturing through digital solutions, and facilitating efficient transportation within industrial facilities.
AISO Electric, established in 2012 and based in Zhejiang, China, is a manufacturer and supplier of electrical equipment. The company offers electrical equipment in low voltage, high voltage and ultra high voltage series along with transformers and complete set devices. Its main business is exporting and has supplied its products to more than 50 countries in 10 years. The company has 3 factories and produces its products in accordance with ISO9001 and CE standards.
Mitsubishi Electric Corporation (Mitsubishi EC) is a Japanese multinational manufacturer of electrical as well as electronic products and systems originally established in 1921 by Mitsubishi Shipbuilding Co., now known as Mitsubishi Heavy Industries, Ltd. Based in Tokyo, Japan, the company produces home appliances, HVAC products, and automotive equipment, as well as factory automation and communication systems. These supply consumers and clients internationally throughout the residential, commercial, and industrial sectors. Mitsubishi EC has several subsidiaries operating globally; some as distributors of its products. Some of its notable subsidiaries are Mitsubishi Electric Power Products, Inc. and Mitsubishi Electric Automation, Inc.
Altech Corporation, founded in 1984 and headquartered in Flemington, New Jersey, is a supplier and distributor of electronic and control components and is ISO 9001 certified. The company provides a broad line of products, including programmable controllers, monitoring relays, and terminal blocks, used in instrumentation, industrial control, and automation applications. The company’s enclosed disconnect switches are available in different materials like stainless steel, plastic, and aluminum and have a use rating of 16A to 150A/600V AC. The products are all RoHS and REACH compliant and meet diverse national and international standards like IEC, CSA, and UL.
Xiamen Elemro Group Co. Ltd., founded in 2019 and headquartered in Xiamen, China, is a distributor and supplier of OEM and ODM electrical and electronic components, parts, and equipment. The company stocks over one million products primarily suitable for residential, commercial, and industrial power supply, security access systems, and industrial automation. Individual product examples include analog input PLCs, inverters, and illuminated machine push button switches, manufactured by both international and domestic brands such as ABB, Schneider, and Delixi. The company also provides support services such as system integration, supply chain finance, and purchasing assistance.
Tameson was founded in 2013, in Eindhoven, the Netherlands as an online-based supplier and distributor of industrial products. The company offers a wide range of products, including valves, tubes and hoses, fittings, electrical accessories, and hydraulics. There are also Office supplies such as memory cards, cables, etc. along with measuring and controlling devices like thermometers, gauges, levels, and more. Industries such as Home and Garden, Food and Beverage, Automotive, HVAC, and Industrial Automation, amongst others, benefit from the products distributed by Tameson.
AS ONE Corporation, established in 1962, is a Japanese supplier of laboratory instruments and consumables, headquartered in Nishi Ward, Osaka. Through their website, AXEL GLOBAL, the company offers a selection of 3 million products. These include physical and chemical science instruments such as universal and measuring instruments, as well as laboratory instruments for cultivation, separation, and analysis. They also provide research facility equipment such as storage equipment and laboratory chairs. AS ONE extends its offerings to include industrial instruments like dehumidifying storage and organization and conveyance equipment. Additionally, AS ONE serves the healthcare sector with products for hospitals and nursing homes.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | HV Hipot Electric Co., Ltd. |
15.4%
|
| 2 | AISO Electric |
11.5%
|
| 3 | Zhejiang Sentai Electrical Apparatus Factory |
11.5%
|
| 4 | Xiamen Elemro Group Co., Ltd. |
7.7%
|
| 5 | Wenzhou korlen electric appliances co.,ltd. |
7.7%
|
| 6 | GUANGXI PRECISION TRADING CO., LTD. |
3.8%
|
| 7 | SHANGHAI DADA ELECTRIC CO.,LTD |
3.8%
|
| 8 | Shihlin Electric & Engineering Corp. |
3.8%
|
| 9 | Himel |
3.8%
|
| 10 | CBI-electric Group. |
3.8%
|
Derivation Method
The ranking is calculated based on the click share within the earth-leakage circuit breaker page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
China
|
9 | 47.4% |
|
Japan
|
4 | 21.1% |
|
United States of America
|
2 | 10.5% |
|
Taiwan
|
1 | 5.3% |
India
|
1 | 5.3% |
South Africa
|
1 | 5.3% |
|
Netherlands
|
1 | 5.3% |
8 products found
8 products
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