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  6. Three-phase transformer for bus bar (current transformer) 'KBF-□□'

Three-phase transformer for bus bar (current transformer) 'KBF-□□'

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KBF-□□

last updated:Jun 09, 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)
  • Official site

You can match any type of busbar. It is a product with good performance and price. Instruments for distribution boards and panels.

KBF is our company's pride in three-phase CT. In fact, it is the most popular model among the types of CT we offer. It has three corner windows of the same basic size, and the size of the CT has diversified to match the size of the circuit breaker. Our company has been developing three-phase CTs for the past ten years, which has led to their popularity in the domestic market as well. For inquiries, please contact "lightstar_1979@yahoo.co.jp".

    Converters and TransducersTransformersBoard materials
부스바용

Three-phase transformer for bus bar (current transformer) 'KBF-□□'

부스바용 3상 CT222  수정용.png
부스바용 3상 CT222  수정용.png
  • Related Link - http://www.lightstar.co.jp/product/view&idx=200

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basic information

This is a product designed for circuit breakers (CB). Common specifications: Secondary current: 5A or 1A Overcurrent strength: 40 times Maximum voltage: 1.15kV Withstand voltage: 4.0kV for 1 minute Frequency: 50/60Hz

Price information

KBF-02: 3000 yen KBF-12: 3150 yen KBF-12S: 4500 yen KBF-22: 3300 yen KBF-42: 4050 yen KBF-62: 5550 yen KBF-03: 3300 yen KBF-13: 3600 yen KBF-13S: 5180 yen KBF-23: 4050 yen KBF-43: 4800 yen KBF-63: 6300 yen KBF-720: 4950 yen, 5250 yen KBF-721: 9000 yen, 9750 yen KBF-722: 15750 yen, 16500 yen

Price range

P1

Delivery Time

P2

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

Applications/Examples of results

This is a transformer for busbars. It is a product that is popular both domestically and internationally, and is produced daily.

Detailed information

  • KBF-7.JPG

    This is how to order the KBF-7 series. The KBF-7 series includes temperature measurement terminals and voltage measurement terminals (optional). It also has a voltage power-on confirmation function (with LED attachment) (optional).

  • 사진....jpg

    This is a photo of the actual product installed. Please use it as a reference.

Line up(12)

Model number overview
KBF-02 Circuit 3P3W(2CT) Applicable CB 100AF Operating current 120~200A(5VA) Class 1.0 Frequency 50/60Hz
KBF-12 Circuit 3P3W(2CT) Applicable CB 100AF Operating current 120~200A(5VA) Class 1.0 Frequency 50/60Hz
KBF-12S Circuit 3P3W(2CT) Applicable CB 100AF Operating current 100~200A(5VA) Class 1.0 Frequency 50/60Hz
KBF-22 Circuit 3P3W(2CT) Applicable CB 250AF Operating current 200~300A(5VA) Class 1.0 Frequency 50/60Hz
KBF-42 Circuit 3P3W(2CT) Applicable CB 400AF Operating current 200~400A(5VA) 500A(15VA) Class 1.0 Frequency 50/60Hz
KBF-62 Circuit 3P3W(2CT) Applicable CB 600AF Operating current 300A(5VA) 400~1200A(15VA) Class 1.0 Frequency 50/60Hz
KBF-03 Operating current 150~200A(5VA) Class 1.0 Frequency 50/60Hz
KBF-13 Circuit 3P4W(3CT) Applicable CB 100AF Operating current 150~200A(5VA) Class 1.0 Frequency 50/60Hz
KBF-13S Circuit 3P4W(3CT) Applicable CB 100AF Operating current 100~200A(5VA) Class 1.0 Frequency 50/60Hz
KBF-23 Circuit 3P4W(3CT) Applicable CB 250AF Operating current 200~300A(5VA) Class 1.0 Frequency 50/60Hz
KBF-43 Circuit 3P4W(3CT) Applicable CB 400AF Operating current 200~400A(5VA) 500A(15VA) Class 1.0 Frequency 50/60Hz
KBF-63 Circuit 3P4W(3CT) Applicable CB 600AF, 800AF, 1000AF, 1200AF Operating current 300A(5VA) 400~1200A(15VA) Class 1.0 Frequency 50/60Hz

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Three-phase transformer for busbar (current transformer) 'KBF-□□'

Three-phase transformer for busbar (current transformer) 'KBF-□□'

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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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  • Official site
Phone number/address

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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