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

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

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KBJ-□□

last updated:Jun 11, 2026

光星計測器(LIGHTSTAR) LIGHTSTAR JAPAN 日本法人事務所(大阪)
光星計測器(LIGHTSTAR) LIGHTSTAR JAPAN 日本法人事務所(大阪)
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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 TransducersTransformersBoard materials
KBJ.png

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

KBJ.png
KBJ.png
  • Related Link - http://www.lightstar.co.jp/product/view&idx=168

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basic information

Common specifications Secondary current: 5A or 1A Overcurrent strength: 40 times Maximum voltage: 1.15kV Dielectric strength: withstand 4.0kV for 1 minute Frequency: 50/60Hz

Price information

KBJ-15: 900 yen KBJ-23: 900 yen KBJ-25: 830 yen KBJ-26: 9,750 yen KBJ-03: 1,050 yen, 1,200 yen KBJ-04: 1,350 yen, 1,650 yen KBJ-06: 2,250 yen, 3,000 yen, 4,500 yen KBJ-10: 6,000 yen, 7,500 yen, 12,000 yen

Price range

P1

Delivery Time

P2

※There is an agency in Yokohama, Japan, that has stock available.

Applications/Examples of results

This is a current transformer for power lines. It is a product that is popular both domestically and internationally, and we produce it every day.

Detailed information

  • KBJ

  • KBJ

  • KBJ

  • KBJ

Line up(8)

Model number overview
KBJ-15 Operating current 40A(2.5VA), 50~75A(5VA) Class 3.0 / Operating current 100~150A(5VA) Class 1.0
KBJ-23 Operating current 40A(2.5VA), 50~75A(5VA) Class 3.0 / Operating current 100~200A(5VA), 250~300A(15VA) Class 1.0
KBJ-25 Operating current 50~60A(2.5VA), 75A(5VA) Class 3.0 / Operating current 100~200A(5VA), 250~300A(15VA) Class 1.0
KBJ-26 Operating current 30A(2.5VA), 40A(5VA) Class 3.0 / Operating current 50~80A(5VA), 100~150A(15VA), 200~500A(40VA) Class 1.0
KBJ-03 Operating current 100~150A(5VA), 200~350A(15VA), 400~600A(40VA) Class 1.0
KBJ-04 Operating current 100~150A(5VA), 200~350A(15VA), 400~2000A(40VA) Class 1.0
KBJ-06 Operating current 100~200A(5VA), 250~400A(15VA), 500~3000A(40VA) Class 1.0
KBJ-10 Operating current 300~500A(15VA), 600~6000A(40VA) Class 1.0

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

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

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Company information

光星計測器(LIGHTSTAR)

光星計測器(LIGHTSTAR) LIGHTSTAR JAPAN 日本法人事務所(大阪)

Industrial Electrical Equipment

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Our company was founded in 1979 and has grown from producing early analog (needle-type) instruments to digital instruments, as well as products that allow for the observation of electrical data via wireless and the internet. This development reflects the strong commitment of our employees to walk alongside our customers. Additionally, we are making proactive investments in technology development at our affiliated research institute and are thoroughly operating our business processes with a customer-centric approach. We are dedicated to meeting the diverse needs of our customers through more differentiated services. In our case, we have become well-known in South Korea for our measuring instruments (analog, digital meters, and CT, VT). We have been exporting to Japanese companies for over a decade, and we have registered with Ipros to introduce our products to more Japanese customers. In 2022, we registered as a corporation in Tokyo and have since relocated our corporate office to Osaka under the name "LIGHTSTAR JAPAN." We also have Japanese staff on-site, and we look forward to serving you.

Product/Service List (114)

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