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Current transformers Product List and Ranking from 9 Manufacturers, Suppliers and Companies

Last Updated： Aggregation Period:Nov 19, 2025～Dec 16, 2025
This ranking is based on the number of page views on our site.

Current transformers Manufacturer, Suppliers and Company Rankings

Last Updated： Aggregation Period:Nov 19, 2025～Dec 16, 2025
This ranking is based on the number of page views on our site.

  1. 光星計測器（LIGHTSTAR） LIGHTSTAR JAPAN　日本法人事務所（大阪） South Korea//Industrial Electrical Equipment
  2. ヒラヰ電計機 東京営業所 Tokyo//Industrial Electrical Equipment
  3. null/null
  4. 4 東洋計器 Osaka//Industrial Electrical Equipment
  5. 4 Suntex Co., Ltd. Shizuoka//Industrial Electrical Equipment
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Current transformers Product ranking

Last Updated： Aggregation Period:Nov 19, 2025～Dec 16, 2025
This ranking is based on the number of page views on our site.

  1. Transformer for busbars (Current Transformer CT) 'KBM-□□' 光星計測器（LIGHTSTAR） LIGHTSTAR JAPAN　日本法人事務所（大阪）
  2. Current transformer CR2-□, CS1-□, CM1-15
  3. Current transformer "CT" 東洋計器
  4. Split-type transformer (current transformer CT) 'KBC-□□' 光星計測器（LIGHTSTAR） LIGHTSTAR JAPAN　日本法人事務所（大阪）
  5. Directly Mountable Current Transformer (CT) 'KBK-□' 光星計測器（LIGHTSTAR） LIGHTSTAR JAPAN　日本法人事務所（大阪）

Current transformers Product List

16～30 item / All 33 items

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SGR Busbar Zero Sequence Current Transformer (ZCT) 'KGB-□S'

SGR Busbar Zero Sequence Current Transformer (ZCT) 'KGB-□S'

ZCT for busbars used with leakage current alarms. It is a product with good performance and price. ★★★ Instruments for distribution boards, control panels, sub-distribution boards, and panels.

This device is designed to be installed on power lines below 600V, allowing the primary side of the current transformer to carry the total circuit current, with the vector sum of the currents output on the secondary side. The output current value is measured at the input of the leakage current alarm receiver. Features: - Designed with dimensions categorized by the type of applicable circuit breakers, optimizing space utilization. - Constructed to ensure that the plastic surface does not contact the busbar after assembly, minimizing thermal deformation during busbar overheating. This product is a ZCT for SGR. For inquiries, please contact "lightstar_1979@yahoo.co.jp".

  • transformer
  • Transformers
  • Other electronic measuring instruments

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Measurement methods for current transformers (calibration methods).

Measurement methods for current transformers (calibration methods).

Reading and comparing two values! An introduction to the measurement method (calibration method) of current transformers.

Our company performs calibration using a measurement method called comparative testing. Standard voltage transformers (VTs) and standard current transformers (CTs) are the reference VTs and CTs that have been tested at the Japan Electric Measuring Instruments Inspection Institute. Additionally, the test voltage transformers (VTx) and test current transformers (CTx) are, for example, the VTs and CTs for which we have received calibration requests from customers. For each, two values are read and compared. The values are small because they are theoretically the same ratio. *For more details, please refer to the related links page or feel free to contact us.*

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High voltage winding type current transformer 500 times/1 second & 800 times/1 second

High voltage winding type current transformer 500 times/1 second & 800 times/1 second

Hirai Electric Meter Standard Product: Current Resistance 500 times/1 second & 800 times/1 second

This is a current transformer for circuits with a maximum voltage of up to 7.2kV/6.9kV. For overcurrent intensity of 500 times/1 second and overcurrent constant n>10, you can use model ECT-1000A1. For overcurrent intensity of 800 times/1 second and overcurrent constant n>5, you can use model ECT-1000A. The basic design complies with JIS C 1731-1/JEC-1201, but we can accommodate special specifications such as multiple taps or tertiary windings upon request. Place of production: Made in Japan (Kyoto).

  • Transformers
  • Sensors
  • Board materials

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Current Transformer "CTC-NR Series"

Current Transformer "CTC-NR Series"

A round window-type double-mold low-voltage instrument transformer that can reduce wire winding work!

The "CTC-NR Series" is a current transformer for low-voltage instruments that can reduce the workload of wire winding. It uses a heat-resistant ABS resin case for its exterior, making it lightweight and easy to handle. This series is manufactured in accordance with the basic JIS-C-1731-1 standard, but products can also be made according to overseas standards such as IEC upon request. Please feel free to consult us. 【Features】 ■ Installation direction can be easily changed ■ Can use 600V vinyl wire for primary through conductors ■ Can be manufactured according to overseas standards ■ Uses a heat-resistant ABS resin case for the exterior ■ Lightweight and easy to carry *For more details, please refer to the catalog or feel free to contact us.

  • Electronic Components
  • Machine elements
  • Other measurement and measuring equipment

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Current transformer "ECT-40 Series"

Current transformer "ECT-40 Series"

Designed with a large through-window! It allows for direct conductor penetration even with pre-attached crimp terminals.

The "ECT-40 Series" is an epoxy-molded product series with a capacity of only 40VA. It is designed with a large through-window, allowing for direct conductor penetration even when crimp terminals are already attached, making it suitable for low-voltage meter current transformers. This series is manufactured in compliance with the basic JIS-C-1731-1 standard, but products can also be made according to overseas standards such as IEC upon request. Please feel free to consult us. 【Features】 ■ Reliable anti-vibration base structure ■ Usable even in environments with continuous vibration ■ Can be used not only for measurement but also for protection ■ Large diameter allowing for penetration up to 150mm busbars ■ Products can also be manufactured according to overseas standards such as IEC *For more details, please refer to the catalog or feel free to contact us.

  • Electronic Components
  • Machine elements
  • Other measurement and measuring equipment

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Immersion-proof current transformer (split type) 'QZ-8A'

Immersion-proof current transformer (split type) 'QZ-8A'

Supports primary current of 300A to 1000A and secondary current of 5A! Waterproof and split-type current transformer and zero-phase current transformer.

The "QZ-8A" from Miwa Electric is a waterproof and split-type current transformer and zero-sequence current transformer (CT/ZCT). It is suitable for circuit voltages ranging from 22kV to 154kV, with primary currents from 300A to 1000A and secondary currents of 5A. 【Features】 ■ Waterproof and split-type current transformer and zero-sequence current transformer ■ Applicable circuit voltage: 22kV to 154kV ■ Primary current: 300A to 1000A ■ Secondary current: 5A *For more details, please refer to the PDF document or feel free to contact us.

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Current transformer "CT"

Current transformer "CT"

Compact, lightweight, and easy to use! High performance, low-cost current transformer.

The round window type (COM type) is suitable for cable wiring, while the square window type (CBM type) can be used for busbar wiring without cutting the primary conductor, making them ideal for distribution boards and control panels. Additionally, for small currents (5-30A), there is a type with primary windings that eliminates the need for the number of turns (COMA type) (up to 200A, 250A), and both primary and secondary types for small currents (CRM type) ranging from 0.1 to 10A are optimal as auxiliary current transformers. 【Features】 ○ The entire unit is molded with polyester resin, making it resistant to chemicals, with no insulation degradation due to aging or moisture absorption, and it is mechanically robust. ○ The mounting feet can be adjusted to change direction by 90°. ○ The CBM type can be mounted vertically or horizontally, or fixed to the primary conductor. For more details, please contact us or download the catalog.

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Current transformer for electric wires (Transformer CT) 'KBJ-□□'

Current transformer for electric wires (Transformer CT) 'KBJ-□□'

There are 8 different sizes available, so it can be applied in any environment! Please use it first. A new world will open up! Instruments for distribution boards and panels.

KBJ is our current transformer for electric wires. We have developed eight different types to allow installation in various conditions within the panel. Each product has a different inner diameter measurement, so you can choose based on your situation. The allowable current range is also wide. Currently, this product is exported worldwide, including to Japan, Vietnam, and the United States. For inquiries, please contact "lightstar_1979@yahoo.co.jp".

  • Converters and Transducers
  • Transformers
  • Board materials

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Split-type transformer (current transformer CT) 'KBC-□□'

Split-type transformer (current transformer CT) 'KBC-□□'

This is a split-type CT. There are both types for electric wires and busbars, so you can use whichever you prefer. ★★★ Instruments for distribution boards, control panels, distribution panels, and panels.

KBC is our split-type CT. What differentiates it from our other CTs is its ability to be split. Since it can separate the top and bottom, it makes connecting to wires and busbars easy. There are two types each for wires and busbars, so it can be used according to your preferences. For inquiries, please contact "lightstar_1979@yahoo.co.jp".

  • Converters and Transducers
  • Transformers
  • Board materials

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Transformer for busbars (Current Transformer CT) 'KBM-□□'

Transformer for busbars (Current Transformer CT) 'KBM-□□'

Any type of circuit breaker for ugly bars can be matched. It is a product with good performance and price. Instruments for distribution boards, control panels, distribution panels, and panels.

KBM is our busbar-type CT and is a product compatible with circuit breakers (CB). The primary current range is from 50 to 1600, allowing for a wide range of applications. The KBM series has diversified the size of the CT to match the size of the circuit breakers. Therefore, it is a recommended product for those who are unsure about choosing a CT for their circuit breaker. For inquiries, please contact "lightstar_1979@yahoo.co.jp".

  • Electrical Instruments/Electrometers
  • Transformers
  • transformer

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Zero-phase current transformer for electric wires (ZCT) 'KGC-□'

Zero-phase current transformer for electric wires (ZCT) 'KGC-□'

ZCT used with leakage current alarms. It is a product with good performance and price. ★★★ Instruments for distribution boards, control panels, distribution panels, and panels.

It is installed on a wire route with a voltage of less than 600V, allowing the overall circuit current to flow through the primary side of the current transformer, so that the vector sum of the currents is output on the secondary side. The output current value is measured at the input of the leakage alarm receiver. Features - The shape of the lower section of the penetration is designed to be flat to minimize the curvature of the passing wire. - The height of the penetration section is designed to be 45mm, considering the duct height of 40mm. For inquiries, please contact "lightstar_1979@yahoo.co.jp".

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SGR power line zero-phase current transformer (ZCT) 'KGC-□S'

SGR power line zero-phase current transformer (ZCT) 'KGC-□S'

ZCT used with leakage current alarms. It is a product with good performance and price. ★★★ Instruments for distribution boards, control panels, distribution panels, and panels.

This device is installed on a wire route with a voltage of less than 600V, allowing the entire circuit current to flow through the primary side of the current transformer, with the vector sum of the currents output on the secondary side. The output current value is measured at the input of the leakage alarm receiver. Features: - The shape of the lower section of the penetration is designed to be flat to minimize the curvature of the penetrating wire. - The height of the penetration section is designed to be 45mm, considering the duct height of 40mm. This product is a ZCT for SGR. For inquiries, please contact "lightstar_1979@yahoo.co.jp".

  • transformer
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[Research Material] Global Market for Gas-Insulated Current Transformers

[Research Material] Global Market for Gas-Insulated Current Transformers

Global Market for Gas Insulated Current Transformers: High Voltage Electricity, Medium Voltage Electricity, Low Voltage Electricity, Process Industries, Power Transmission, Residential, Railways, Others

This research report (Global Gas Insulated Current Transformer Market) investigates and analyzes the current state and outlook for the global gas insulated current transformer market over the next five years. It includes information on the overview of the global gas insulated current transformer market, trends of major companies (sales, selling prices, market share), market size by segment, market size by major regions, and distribution channel analysis. The segments by type in the gas insulated current transformer market focus on high voltage electricity, medium voltage electricity, and low voltage electricity, while the segments by application cover process industries, power transmission, residential, railways, and others. The regional segments are divided into North America, the United States, Europe, Asia-Pacific, Japan, China, India, South Korea, Southeast Asia, South America, the Middle East, and Africa to calculate the market size of gas insulated current transformers. It also includes the market share of major companies in the gas insulated current transformer sector, product and business overviews, and sales performance.

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