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This section provides an overview for current transformers as well as their applications and principles. Also, please take a look at the list of 62 current transformer manufacturers and their company rankings. Here are the top-ranked current transformer companies as of December, 2024: 1.Abracon, 2.Continental Control Systems, LLC., 3.Magnelab, Inc.
Table of Contents
A current transformer (CT) is a device that transforms a magnitude of current, often abbreviated as CT.
The magnitude of the current input to the current transformer is transformed according to the ratio of the number of Coils or turns at the input and output. It is used to convert the current of a large-current circuit or a high-voltage circuit into a small current. Also, it is used for current measurement and relays.
Current transformers are widely used in industry and infrastructure equipment.
The following are examples of current transformer applications:
Current transformers are used for circuit insulation and current conversion. Circuit isolation is used to isolate the main circuit from the control circuit where large current flows, and Current Transformers are also used to monitor the current of small pumps (5 A or so) for the purpose of circuit isolation.
Current transformers are used to output large currents as small current circuits. Since it is uneconomical to introduce several thousand A of current into the control circuit due to the large size of the control wiring, Current Transformers are used to transform the current to a maximum of about 5 A for control and monitoring.
Current transformers for AC consist of an iron core, a primary coil, and a secondary coil. Each of these is wound around an iron core.
When current flows through the primary coil, a magnetic flux is generated in the iron core to excite the secondary coil. The secondary coil generates a current on the secondary side according to the magnitude of the magnetic flux excited.
The current value generated in the secondary coil is determined by the current in the primary coil and the turn ratio: the more turns in the primary coil, the higher the current value, and the less turns in the secondary coil, the lower the current value. Generally, the current value of the secondary coil is adjusted to 1 A or 5 A for the maximum allowable current in the primary coil.
Current transformers are classified into wire-wound current transformers and feed-through current transformers. The following are examples of Current Transformer types:
Current transformers consist of an annular iron core and input/output coils.
It works as described in the principle section. It is mainly used for small current transformers of several A to several tens of A, because the larger the current in the measurement circuit, the larger the allowable wiring current on the primary side. It is characterized by its ability to measure small currents with high accuracy.
Current transformers are transformers that do away with the primary-side coil. The circuit wiring to be measured is inserted between the iron core and the primary coil.
Current transformers are generally selected for large current circuits ranging from several tens of A to several hundred A or more, and can be installed at low-cost since there is no primary-side coil.
Current transformers for AC circuits are described in the principle section. It cannot be used for DC circuits because no magnetic flux is generated in the iron core. A DC current transformer using a Hall element is used to measure DC current.
When a magnetic field is applied to a circuit in which Current flow, a voltage corresponding to the current value is generated. This is called the Hall effect, and a Hall element is an element that outputs a voltage based on this principle. Most DC Current Transformers are current transformers using Hall elements.
However, in the case of direct current, there are high current power supplies, such as for trams. Their current values may be tens of thousands of A, which is difficult to measure with a Hall element Current Transformer.
A shunt resistor is a low-resistance resistor for measuring current. Since the resistance value is predetermined, it can be converted to a current value by measuring the voltage at both ends.
Shunt resistors are used to measure large DC currents of several tens of thousands of A. Since shunt resistors in high current circuits generate a large amount of heat, they are often water-cooled.
Current transformers are basically selected according to the value of the current flowing on the primary side, and a current transformer with a current specification larger than the maximum current flowing in the primary side should be selected.
Current transformers are connected to an overcurrent relay or current indicator on the secondary side. Depending on the intended application, it is recommended to select a current transformer with a secondary side current value of 0-1A or 0-5A,
Since the overcurrent relay is often placed close to the current transformer, a product with a secondary side current specification of 0-5 A is often selected for the current transformer. This is because 0-5A makes it possible to measure current values more precisely.
On the other hand, a current indicator may be separated from a current transformer, in which case the secondary side current specification is often set to 0-1A. This is because the 0-1A specification makes it possible to reduce the power supply capacity required for the current transformer.
*Including some distributors, etc.
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Magnelab, established in 1968 and based in Longmont, USA, is a manufacturer of AC current sensors and current transformers. The company designs and manufactures custom magnetics such as AC and DC current sensors, current transducers, voltage transformer and Rogowski coils. It also offers to build customized products from print or by design. The company offers resources like white papers for understanding its products and a blog covering educational topics related to magnetics. It has acquired ISO 9001:2015 certification and has RoHS and REACH SVHC declarations.
Abracon LLC, founded in 1992 with headquarters in the USA, is an ISO 9001:2015 manufacturer of precision electronic components for the aerospace, defense, security, medical, and transport markets worldwide. The company's core products include RADAR and LIDAR systems, radio communications, datalinks, aircraft computing, and head-up displays. Transportation products include crystals, oscillators, antennas, and inductors for transportation applications in harsh environments. Abracon LLC's medical solutions include hospital beds, bedside patient monitors, MRIs, and surgery-assisted robotics.
DENT Instruments Inc., established in 1988 and headquartered in Bend, OR, United States, is a precision electrical power measuring and monitoring instruments, equipment, and devices manufacturer and supplier. The company's products include revenue-grade and ANSI-certified electrical sub-meters, clamp-on current transformers, and portable power data loggers. It also provides a cloud-based proprietary power monitoring software platform. These products are used in sub-metering, current sensors, and creating energy-efficient buildings. The company's products are available through its online store, and all products come with warranties.
Schweitzer Engineering Laboratory, established in 1982, is a manufacturer of power systems protection based in Washington, USA. The company provides cutting-edge products and services that enhance the efficiency and security of electrical power systems. The company offers many products, including protective relays, communication devices, automation controllers, and software solutions. The advantage of the company's products is its robustness, which can withstand harsh environmental conditions, making it suitable for deployment in diverse settings, from substations to remote installations.
Continental Control Systems, LLC, established in 1995, is a manufacturer of energy measurement and monitoring solutions based in the USA. The company's product portfolio encompasses a range of energy measurement devices and systems. These products are designed to accurately measure electrical parameters such as current, voltage, power, and energy consumption. The company's products are found in various sectors, including industrial, commercial, and residential settings. One sample product is the WattNode BacNet, a multi-function energy and power meter found in various applications. This device can be used to monitor and manage energy consumption as well as provide precise measurements of electrical parameters.
Amran Inc. is a manufacturer of current and voltage transformers headquartered in Texas, USA. The company was established in 2004 with manufacturing facilities in the USA and India. Its product lineup includes a wide range of low-voltage current transformers, voltage transformers, and Rogowski coils & sensors. Additionally, the company specializes in offering custom-developed products with efficient and cost-effective solutions as well as a standard product range catering to OEM (Original Equipment Manufacturer) applications. The company holds certifications such as ISO9001 and ISO14001, and OHSAS18001.
Coilcraft was founded in 1945 and is headquartered in Cary, Illinois. The company is a designer, manufacturer, and distributor of high-performance magnetic components for industries including automotive and computing. The company’s standard products include power devices such as inductors, RF devices, transformers, and EMI components. The company’s automotive division offers transformers, inductors, chokes, and filters operation down to -40 degrees. The company also offers design tools to help customers understand the correct product for their needs and optimum system operational parameters.
TAKAOKA TOKO CO., LTD., established in 1918 and headquartered in Toyosu, Tokyo, is a manufacturer specializing in power distribution systems. Its product line includes substation equipment, SCADA and control systems, intelligent electronic devices (IED) for power system control, lightning current measuring devices for wind power plants, and electric vehicle (EV) charging systems. The company's products plays a vital role in the electrical equipment and construction industry, serving power distribution needs and renewable energy sectors.
Watanabe Electric Industry Co. Ltd. are manufacturers of measurement and control instruments since 1940 in Japan. The company deals in signal converters, digital panel meters, non-contact meter relays, and electric current recorders. The signal converters are used to isolate and convert signals to prevent current ground loops, protect from external noise, signal boosting, and more. Digital panel meters also have various applications such as filter clogging monitors, weight measurement, conveyor rotation speed management, and many other uses. The equipment is known for its accuracy and stability while being in use.
Thousand Hundred Industrial Co. Ltd., established in 1993, is a Taiwanese manufacturer of current transformers headquartered in Hokou, Hsinchu. Operating an Underwriter Laboratories (UL)-approved witness laboratory at its head office and a manufacturing facility in Guangdong, China, the company develops a range of products, including split-core, clamp-on, and mini precision current transformers. Other products include zero-phase, direct current (DC)-immune, and high-frequency current transformers. It also offers encapsulated and potential transformers, current transducers, and hall-effect current sensors. As an ISO 9001:2015-certified company, it serves over 1,300 clients in 67 countries.
Quality Electronic Engineering Design (QEED), established in 2012 as the electronics division of DEM S.p.A., is an Italian manufacturer based in Longarone, Belluno, specializing in electronic products for industrial automation. Supported by a production plant in Packrac, Croatia, and an electronic compatibility (EMC) laboratory, this division develops a range of products. These include single and three-phase network analyzers, signal converters, and Modbus input/output (I/O) servers, as well as various current transformers, including standard, split-core, and Rogowski options. The division also offers customized products and related software solutions.
GFUVE ELECTRONICS, founded in 2005 and headquartered in Beijing, China, is a manufacturer of electronic measurement and test equipment. The company offers an extensive product portfolio, including split-core current transformers, high-voltage ammeter recorders, IEC61850 test suite software, monitoring systems for pumping units, and phantom load power sources. These products are applied by researchers and engineers in laboratories and educational institutions, maintaining the stability and reliability of the electrical grid, controlling energy generation from sources like solar panels, and monitoring power distribution systems to track the flow of electricity.
Yueqing Hean Electrical Co. Ltd. is a manufacturer of low- and high-voltage electrical equipment and appliances that was established in Zhejiang, China, in 2006. The company’s product lineup includes din-rail modular kilowatt-hour meters for measuring energy consumption, surge protectors for insulating electrical equipment from spikes or surges, and circuit breakers for protecting electrical circuits from shorts or overloads. The company’s products are used mainly by clients in China’s construction, infrastructure, and electrical industries.
Yokogawa Test & Measurement Corporation was founded in Japan in 1954. Yokogawa currently serves a wide array of industries including the aerospace, automotive, consumer electronics, semiconductor and telecommunications industries with both hardware and software solutions. Among Yokogawa’s suite of products are oscilloscopes, voltage probes, power analyzers and meters, data acquisition tools, optical test equipment, a wide variety of handled meters, calibrators, and testers; analog instruments, and manometers.
PREMO Group is a magnetics manufacturer founded in 1962 and based in Malaga, Spain. The company develops, manufactures, and sells electronic components. The company operates 3 manufacturing plants in Wuhu City (China), Tanger (Morocco), and Quang Nam (Vietnam). Also, PREMO operates research and development centers in France, Germany, Korea, Spain, USA, and China. The main focus of the PREMO Group are products used in IoT, M2M, VR, Connected and Electric Vehicles. Their product list comprises of RFID antennas, Motion Tracking Sensors, and power transformers. PREMO also manufactures inductors & chokes, current sensors, EMC filters, and PLC components.
MeterTest Sp. z o.o., founded in 2005 and headquartered in Świdnica, Poland, is a manufacturer of advanced metering systems for the energy industry. The company offers a comprehensive product catalog, including three-phase meter test equipment, single-phase meter test equipment, three-phase power calibrators and testers, three-phase network analyzers, and testers for electricity meters and instrument transformers. These products have applications in oil and gas refineries, waste and sewage treatment, controlling chemical processes through electrochemical methods, maintaining a consistent liquid level in industrial tanks, and managing the flow of liquids through pipelines.
NR Electric Co., Ltd., a subsidiary of NARI Technology Development Limited Co., established in 1995 and headquartered in Nanjing, Jiangsu, China, is a manufacturer of power system protection and control solutions. The company’s product portfolio comprises phasor measurement, power grid monitoring & controls, digital substations, stability control systems, and accessories such as test blocks, interposing relay sets, operating relays, and auxiliary relay sets. These products are used in the power industry to offer various solutions including power generation, transmission systems, distribution networks, and industrial consumers in the power industry.
Andeli Group Co., Ltd., established in 1985 in Zhejiang, China, is a manufacturer and a distributor of electrical components and equipment. Its extensive product range includes circuit breakers, automatic transfer switches, frequency inverters, power equipment, indicator and switch products. These components find applications across various sectors, including construction, electronics, and power generation. The company holds multiple certifications, including ISO9001:2000, "CCC" for all its products. It adheres to quality and efficiency, making it a renowned name in the electrical sector.
UnidataFC srl was established in 1951 and is a manufacturer of analog instruments, digital instruments, and automatic control systems based in Castellanza, Varese, Italy. The company offers various products in the portofolio, such as MID energy counters, earth leakage relay, voltage transformers, industrial remote controls, and AC current transformers. Various solutions also offered by the company as a service such as flat membrane keyboards, remote control keyboards, and industrial radio controls. The company has passed the certification of ISO 9001 for the qualitative and structural adjustment.
ORION ITALIA s.r.l, headquartered in Piacenza, Italy, is a specialized manufacturer of protection relays and temperature controllers for industrial applications and utilities. The company offers a line of protection and control products, including protections for feeders, motors, voltage, and frequency. It also produces temperature monitoring and control systems designed to prevent and mitigate transformer failures. The company's international standard is evident through the ISO 9001 certification of its commercial and logistics departments.
Shihlin Electric and Engineering Corp, founded in 1955 and headquartered in Taipei, Taiwan, is a manufacturer of heavy electrical systems, electrical equipment, machinery, and automation. The company offers a diverse product catalog, including miniature circuit breakers, magnetic contactor switches, molded case circuit breakers, oil-immersed distribution transformers, and Shihlin SDC-A servo - economic pulse type. These products have applications in domestic electrical distribution, factory automation, laboratory power supply, aeronautics and defense, and renewable energy.
Celsa Messgerate-España S.L. was established in 1940 and is a manufacturer of current transformers and measuring equipment based in Moncada, Valencia, Spain. The company offers various products such as current transformers, analogue meters, universal measuring instruments, hour counters, and digital panel meters. The products have been used in various applications such as industrial factories, construction technology, power generation, water supply, and solar panels. The products are manufactured under the compliance of CE and IEC quality standard.
Electrohms Private Limited, established in 1973, is a designer and manufacturer of voltage and current transformer and sensor solutions with headquarters in Bangalore, India. The company offers various standard and custom-engineered solutions involving the design and production of custom products for the customer’s unique needs. The company adheres to ISO, CE, UL, and ANSI standards and offers solutions for various industries including railways, solar & wind, consumer, and EV chargers. It has also introduced customized smart-sensor solutions with communications for use in IoT and smart monitoring applications.
CHEEMI TECHNOLOGY CO., LIMITED is a manufacturer based in China, specializing in cutting-edge technological solutions. The company's wide range of products includes sensors, transducers, switches, and transmitters. These products are used in various fields such as in vehicles, OEM device manufacturing, measuring apparatus, home appliances, and many more. The company also has a well-established partnership with renowned Universities like Tsinghua University, Nanjing University of Aeronautics and Astronautics, Nanjing Institute of Technology among other universities and research institutes.
ETI is a manufacturer of electrical protection and control products based in Slovenia, Central Europe where it was established in 1950. The company deals in circuit breakers and switches along with enclosures, distribution boards, and equipment ETIBOX. The company is also known for manufacturing transformers, contractors, fuses, and control devices. These products are installed as integral solutions for the protection of electrical equipment and components in residential and commercial buildings, in the field of electric power and industry electrical installations.
Dalian Huayi Electric Power Electric Appliances Co., Ltd. is a manufacturer of electric power equipment and appliances based in China. Founded in 2001, the company offers a diverse range of products including power transformers, distribution transformers, circuit breakers, switchgear, power capacitors, and more. Its products are designed to meet the diverse needs of electrical power systems, from generation and transmission to distribution. With a global outlook, the company serves a wide range of customers. Its products and services have been found in power generation facilities, utility companies, industrial complexes, and more.
Instrument Transformers Ltd. is a manufacturer of low-voltage current and voltage transformers based in Scotland. The company was founded in 1974 and it specializes in producing precision-engineered components that are found in various sectors, including GIS switchgear, vessel propulsion, substation automation, power factor correction, and power plant protection, to name just a few. The company stands as a signatory to the UN Global Compact and adheres to the ISO 26000 standard on Social Responsibility. Additionally, it is underscored by its ISO certifications, including ISO9001, ISO14001, and ISO45001.
POLYCAST is a manufacturer of components used in transformer and switchgear products based in Canada. Founded in 1972, the company specializes in the design and development of epoxy-cast products suitable for various applications. The company offers a wide range of bushings, current transformers, and insulators. Its bushings comprise transformer bushings, switchgear bushings, low to medium-voltage bushings, and more. These bushings are essential components used in electrical systems to facilitate the safe and efficient transfer of electrical current between different parts of the system. The company is ISO9001 certified.
Panel Components & Systems, Inc. is based in Stanhope, New Jersey, USA, and is a manufacturer of electrical instruments and components established in 1992 before its acquisition by Germany’s PC&S GmbH. The company primarily offers products for controlling or protecting electrical circuits such as protective relays, and products for monitoring or measuring electrical parameters such as analog meters. It also offers specialized DC test equipment, including generator controllers and resistors. The company’s products are commonly used in power generation, transportation, and automation operations.
Wera is a manufacturer of screw-driving tools with varied applications headquartered in Wuppertal, Germany, and was established in 1936. The product catalog of Wera includes screwdrivers, screwdriver bits, sockets and ratchets, L-keys, and nut spinners. The product tools of the company are known for their Kraftform shape handle tools. The company caters to manual and power tool applications in which it has manufactured over 3,000 tools. Other products include VDE-insulated screwdrivers, dead blow hammers, wrenches, stainless steel tools, and hex keys.
U.R.D., LTD., was founded in 1973 in Plaisians, Rhone-Alpes, and is a manufacturer and supplier of electronic parts and energy-efficient devices such as data conversion equipment, power measuring equipment, alarm equipment, and AC and DC sensors. The company makes alarm equipment like overcurrent and undercurrent alarms and flowing current detection modules. Its AC and DC sensor product catalog includes LED indicators, general-purpose CTL series, wire clamp split sensors, and high-frequency CT penetrated type. The company also offers accessories such as mounting brackets, assembly drawings, and receptacles.
Accuenergy Inc., started in 1998 and based in Toronto, Canada, is a manufacturer of industrial power and energy meter solutions. Its products include power meters, current transformers, and communication devices, and it also provides industrial control panel solutions. The company has a cloud energy management software called AcuCloud, which provides access to metered data and tools to analyze, import, and export data. It is ISO 9001, ISO 14001, and ISO 45001 certified and delivers solutions to over 170 countries worldwide. It has offices in Los Angeles, Beijing, and Pretoria and is a certified UL 508a shop that offers any customization.
People Electric Appliance Group Co., Ltd., headquartered in Yueqing, Zhejiang, China, is a manufacturer of electrical equipment. Its diverse product range includes circuit breakers, contactors, disconnectors, switchgear, and control panels. These products find applications in power generation and transmission, industrial automation, and commercial and residential construction industries. The company's equipment is designed to safeguard and regulate electrical circuits, ensuring safe and efficient operations. The company also holds certifications such as ISO 14001 Environmental Management System, ISO 45001 Occupational Health & Safety Management System, and ISO 9001 Quality Management.
Triotransformer, established in 1994, is a manufacturer of transformers based in India. The company specializes in crafting transformers, reactors, and stabilizers tailored to the unique requirements of clients. Its product lineup includes K Rated Transformers, Current Transformers, Line Chokes, Iron Cored Reactors and Air Cored Reactors, Control Transformers, and more. One key product is its line chokes. This product reduces electromagnetic interference and enhances the overall power quality within electrical systems. The company is ISO9001:2015 certified and caters to Indian and international markets.
Instrument Transformer Equipment Corporation, Inc. (ITEC) is a manufacturer of transformer products based in North Carolina, USA. The company was established in 1993 and offers a comprehensive array of instrument transformer products designed to meet various service requirements. Their product lineup includes current transformers, voltage transformers, combination metering units, station service transformers, and dry-type transformers. The company manufactures products for both the electrical and electric utility sectors within the United States and for export.
NingBo YinZhou Huayuan Electric and Machine Industry Co., Ltd., founded in 2004 and headquartered in Ningbo, China, is a manufacturer and supplier of electrical components and power supply equipment. The company offers hundreds of components and power supply devices, including current and voltage transformers, industrial load break switches, batteries, and charging equipment. It also offers contracting services to supply turnkey components, equipment, and power generation and distribution installations. The company operates service branch offices in Malaysia, Bangladesh, and Latin America, while exporting its products to over 80 countries with major markets in the Middle East, Latin America, and Southeast Asia.
Established in 1992, Fanox is a famous manufacturer and supplier of safe and dependable protection relays headquartered in Pais Vasco, Spain. The company's concept is centered around research and innovation, with a significant allocation of resources towards design engineering. One of the intentions of the energy transition in the power business is to promote and integrate Renewable Energies. This phenomenon results in the developing of a more adaptable and distributed electrical infrastructure, necessitating a digital transformation of the business to manage it effectively.
CHALLENGE INDUSTRIAL CO., LTD., established in 1974 and based in Taipei, Taiwan, is a manufacturer, supplier, and distributor of indoor and outdoor current and potential transformers. The company also produces products such as electronic energy meters, distribution transformers, electrical reactors, and resin insulators, besides offering electrical and electronic equipment to different industries and businesses. All its products are used in revenue and switchboard applications and supplied to power, engineering, and construction firms in different countries such as Japan, Canada, Russia, the United States, and other countries.
ComatReleco is a Swiss specialized manufacturer of multi purpose contactors and relays founded in 1970 following the merger of Comat AG and Releco SA. Headquartered in Worb, Switzerland, the company has a broad product portfolio which includes industrial and timing relays for controlling electrical circuits (ECs), remote control and monitoring devices for accessing ECs, and PLCs/HMIs for automating or monitoring industrial processes. ComatReleco serves a global client base, maintaining a network of partner distributors and subsidiaries in over 60 countries.
Selec Controls, founded in Navi Mumbai, Maharashtra, in 2000 is a manufacturer of Electrical Measurements and Protection, Meters, and, Automatic Power factor controllers. The company's product portfolio includes Indicators and Controllers, Digital Timers, Temperature Controllers, Speed Monitoring Relays and Humidity and Temperature Controllers. The company serves industries such as Oil and Gas, Aerospace and Defense, Automotive and Transportation, Construction, and Power Generation. The company has 200+ distributor network and global sales offices.
Broyce Control Ltd., founded in 1963 and headquartered in Wolverhampton, England, is a manufacturer and supplier of electrical and electronic products. The company offers an extensive product catalog designed to control, monitor, and protect various applications. The products include under and over-voltage monitoring, over-voltage monitoring with restart delay, earth fault detection, logic relays designed to balance wear between motors, and NFC logic relays designed for controlling up to 3 pumps. These products are applied in energy distribution, automation control, lifts and elevators, heating ventilation, and irrigation and piping.
Tense Elektronik is a manufacturer and supplier of electronic products and technologies in industrial automation solutions established in Turkey since 2006. The company specializes in automatic control sensors, controllers, energy analyzers, multimeters, frequency meters, ammeters, timers, among others. It serves industrial sectors such as automotive, manufacturing, construction, food and aerospace. The company's products improve operational efficiency, fluid processes in industries and the optimization of production lines and quality control processes. The company has certification in the Iso 9001:2015 Quality Management System, TSE Certificate and RoHS.
VTEK Elektrik is a manufacturer and distributor of electrical systems and components based in Istanbul, Turkey. The company was established in 1985 and has a specialized product portfolio including transformers, and protection relays. miniature relays, cam switches, and converters. These primarily supply clients in the power generation, renewable energy, and industrial automation industries. From its state-of-the-art facility, the company also offers a range of services, such as commissioning, quality control, calibration, and prototyping. VTEK Elektrik is ISO 9001:2015 certified and has an international presence with distributors in different countries.
Doepke Schaltgeräte GmbH was founded in 1956 and is a manufacturer, distributor, and supplier of residual current protection and electricity products based in Norden, Germany. The company's product portofolio includes fire protection switches, modular residual current devices, residual current operated circuit-breakers with integral overcurrent protection, undervoltage measuring relay, and doorbell transformers. The company has obtained the ISO 9001:2015 certificate for the quality management system. The products manufactured by the company are conformed to the standards of RoHS, REACH, and DLS.
Socomec Group was founded in 1922 and is located in Benfeld, France is a manufacturer and supplier of power solutions switches and systems. The company offers an array of products including single-point power metering and monitoring, static transfer switches, and energy storage systems among others. It extends services like replacement of consumables, preventative maintenance, and maintenance of battery contracts. These products find applications in renewable energies, healthcare facilities, and data centers.
Rockwell Automation, Inc. was founded in 1903 and is headquartered in Milwakee, WI. Rockwell Automation provides industrial automation and digital transformation solutions around the world. Rockwell Automation operates through their intelligent devices, software & control, and lifecycle services segments with both hardware and software products and services. The Intelligent Devices segment offers drives, motion, safety, sensing, industrial components, and configured-to-order products. The Software & Control segment provides control and visualization software and hardware, information software, and network and security infrastructure solutions. The Lifecycle Services segment provides consulting, professional services and solutions, and connected and maintenance services through independent distributors.
Hioki E.E. Corporation was founded in 1935 and headquartered in Ueda, Nagano. Hioki provides testing & analysis, manufacturing & inspection, and equipment maintenance to industries including mobility, battery, motor, energy, electronic components, and infrastructure. Hioki’s has 10 primary product categories which are: recorders and data loggers including oscilloscopes, LCR/Resistance Meters, safety testing including signal generators and calibrators, power meters including power quality analyzers, probes & sensors, optical & PV maintenance & telecommunication, environmental measuring, DMM & testers & field measuring, IoT & new solutions & meter relay, and bare board & package testing.
JUMO GmbH was established in 1949 in Fulda, Germany. The company is a system provider for individual sensor and automation solutions, creating components for measuring as well as products for registration, monitoring, control, and automation. Through these, the company serves a wide range of industries such as food and beverage, railway, shipbuilding, and water treatment with both components and complete solutions. The company’s product segments include Temperature, Pressure, Flow, Liquid Analysis, and Level. The company offers many services to customers including calibration, field service, repair service, and maintenance contracts.
GMC Instruments is the result of a merger in 1993 from companies originally dating back to 1906. Under the Gossen Metrawatt and Camille Bauer brands, the company provides hardware, software, and services to several industries including medical devices and manufacturing. The company’s hardware division provides electrical safety devices, photometry equipment, energy management systems, and vital signs measurement devices. The company’s software lineup includes database management software, power analysis software, and medical device software.
CG Power & Industrial Solutions Ltd., established in 1937 and headquartered in Mumbai, India, is a supplier that designs and markets products related to power generation, transmission, and rail transportation. The company offers a range of products and services, including MV switchgear, VCB, PCVCB, GIS, and RMU. It also provides rail transportation equipment like traction motors, converters, cubicles, relays, and point machines. It offers turnkey solutions for transmission and distribution (T&D) through sub-station projects, engineering, procurement, and construction (EPC). The company has achieved ISO 9001 and ISO 18001 certification. It serves industries such as utilities, power generation, and rail transportation.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Abracon |
5.7%
|
| 2 | Continental Control Systems, LLC. |
4.2%
|
| 3 | Magnelab, Inc |
3.2%
|
| 4 | REO-USA, Inc. |
3.1%
|
| 5 | Instrument Transformer Equipment Corporation, Inc. |
3.1%
|
| 6 | Schweitzer Engineering Laboratory |
3.0%
|
| 7 | Amran Inc |
3.0%
|
| 8 | DENT, Inc. |
2.9%
|
| 9 | POLYCAST |
2.5%
|
| 10 | PREMO S.L. |
2.5%
|
Derivation Method
The ranking is calculated based on the click share within the current transformer 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 (%) |
|---|---|---|
|
United States of America
|
8 | 17.4% |
|
China
|
7 | 15.2% |
|
Japan
|
4 | 8.7% |
|
Italy
|
4 | 8.7% |
|
Taiwan
|
3 | 6.5% |
|
United Kingdom
|
3 | 6.5% |
|
Spain
|
3 | 6.5% |
|
India
|
3 | 6.5% |
|
Turkey
|
3 | 6.5% |
|
Poland
|
1 | 2.2% |
|
Slovenia
|
1 | 2.2% |
| Scotland United Kingdom | 1 | 2.2% |
|
Canada
|
1 | 2.2% |
|
Switzerland
|
1 | 2.2% |
France
|
1 | 2.2% |
Malaysia
|
1 | 2.2% |
|
Germany
|
1 | 2.2% |
54 products found
54 products
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40+ people viewing
Last viewed: 1 day ago
■Product features ・Current detection accuracy ±3% ・Safety design with coil covered with insulating case for plumbing and outdoor products ・Insul...
SHT Co., Ltd.
40+ people viewing
Last viewed: 23 minutes ago
■Product features ・Current detection accuracy ±3% ・Low-cost design with fewer parts
Sanyo Electric Industry Co., Ltd.
80+ people viewing
Last viewed: 12 hours ago
A current transformer that can be retrofitted into an existing electrical circuit. It can be separated into two parts so that it can be attached to...
Nichidensha Co., Ltd.
20+ people viewing
Last viewed: 17 hours ago
Very Fast Response
■Features ・For low voltage circuit wiring ・For general measurement ・Indoor use ・Mounting direction can be changed by 90° ・Small and lightweigh...
Kami Electronics Industry Co., Ltd.
100+ people viewing
Last viewed: 1 day ago
Very Fast Response
■Features ・Board mounting type ・Grain-oriented silicon steel sheet ・Applicable current 0.1A to 25A ・Maximum current 35A ・Turns ratio 1:3,000 ...
Sanyo Electric Industry Co., Ltd.
60+ people viewing
Last viewed: 4 hours ago
A current transformer for measuring large currents (hundreds of amperes). There is no iron core inside, so it is small and light.
Nichidensha Co., Ltd.
30+ people viewing
Last viewed: 1 hour ago
Very Fast Response
■Features ・For low voltage circuit wiring ・For general measurement ・Indoor use ・Mounting direction can be changed by 90° ・Small and lightweigh...
Nichidensha Co., Ltd.
30+ people viewing
Last viewed: 21 hours ago
Very Fast Response
■Features ・For low voltage circuit wiring ・For general measurement ・Indoor use ・Mounting direction can be changed by 90° ・Small and lightweigh...
Nichidensha Co., Ltd.
20+ people viewing
Last viewed: 4 hours ago
Very Fast Response
■Features ・For low voltage circuit wiring ・For general measurement ・Indoor use ・Mounting direction can be changed by 90° ・Small and lightweigh...
Nichidensha Co., Ltd.
20+ people viewing
Very Fast Response
■Features ・For low voltage circuit wiring ・For general measurement ・Indoor use ・Mounting direction can be changed by 90° ・Small and lightweigh...
Nichidensha Co., Ltd.
20+ people viewing
Last viewed: 1 day ago
Very Fast Response
■Features ・For low voltage circuit wiring ・For general measurement ・Indoor use ・Mounting direction can be changed by 90° ・Small and lightweigh...
MIKASA SHOJI CO.,LTD.
90+ people viewing
Last viewed: 11 hours ago
Standard Response
4.7 Company Review
■Summary ・Product variations that can cover everything from small currents to large currents ・Can also be used for billing meters due to excellen...
Nichidensha Co., Ltd.
20+ people viewing
Last viewed: 1 day ago
Very Fast Response
■Features ・For low voltage circuit wiring ・For general measurement ・Indoor use ・Mounting direction can be changed by 90° ・Small and lightweigh...
Shinko Shoji Co., Ltd.
60+ people viewing
Last viewed: 2 hours ago
Fast Response
World's smallest DC to 10GHz, π type fixed attenuator 0 to 10dB, 1dB Step
Nichidensha Co., Ltd.
20+ people viewing
Last viewed: 20 hours ago
Very Fast Response
■Features ・For low voltage circuit wiring ・For general measurement ・Indoor use ・Mounting direction can be changed by 90° ・Small and lightweigh...
Sara Co., Ltd.
20+ people viewing
Last viewed: 20 hours ago
Standard Response
■Summary High precision, split type (through hole diameter: for Φ10mm cable) ■Features 1) CT has a split structure for easy cable installation. 2)...
Osaki Electric Industry Co., Ltd.
100+ people viewing
Last viewed: 9 hours ago
Standard Response
Features ■Compact The height dimension is 60mm, so regardless of the main breaker (225AF), it is possible to make the board even thinner and smalle...
Osaki Electric Industry Co., Ltd.
100+ people viewing
Last viewed: 1 day ago
Standard Response
■Features - By reducing the height dimension, the distribution board can be made thinner and smaller. - Three phases are integrated, simplifying wi...
Osaki Electric Industry Co., Ltd.
70+ people viewing
Last viewed: 35 minutes ago
Standard Response
■Features -The height dimension is 60mm, so regardless of the main breaker (225AF), it is possible to make the board even thinner and smaller by co...
Osaki Electric Industry Co., Ltd.
160+ people viewing
Last viewed: 1 day ago
Standard Response
■Features - The iron core and secondary coil are housed in a plastic outer case, making it compact and lightweight, making it easy to handle. ・The...
3 models listed
Osaki Electric Industry Co., Ltd.
210+ people viewing
Last viewed: 16 hours ago
Standard Response
■Features ・This is a certified product that can be tested in combination with a regular watt-hour meter, and the rated load is 15 VA. - If the pri...
2 models listed
Osaki Electric Industry Co., Ltd.
200+ people viewing
Last viewed: 12 hours ago
Standard Response
■Features - The iron core and secondary coil are housed in a plastic outer case, making it compact and lightweight, making it easy to handle. ・You...
3 models listed
Osaki Electric Industry Co., Ltd.
90+ people viewing
Last viewed: 1 hour ago
Standard Response
■Features ・Both the primary and secondary terminals can be easily wired from the top. ・The certified product can be tested in combination with a ...
NC Automation Co., Ltd.
70+ people viewing
Last viewed: 6 hours ago
Standard Response
5.0 Company Review
■Please replace the product as soon as possible due to its lifespan. The expected lifespan is generally assumed to be about 30 years, but after abo...
