Last Updated： Aggregation Period:May 06, 2026～Jun 02, 2026
This ranking is based on the number of page views on our site.
Last Updated： Aggregation Period:May 06, 2026～Jun 02, 2026
This ranking is based on the number of page views on our site.
Last Updated： Aggregation Period:May 06, 2026～Jun 02, 2026
This ranking is based on the number of page views on our site.
1～27 item / All 27 items
Smart current transformer adopting LoRaWAN wireless technology
● Self-power operation ● Excellent accuracy with a frequency of up to 3.3kHz ● Real-time cumulative amp-hour calculation ● Non-contact installation ● Irregular current state alert ● External wire temperature sensor ● Removable and cable-free design ● LoRaWAN wireless technology
The adoption of a directionally oriented ring core with excellent magnetic characteristics results in superior error characteristics!
The "CT-90M" is a high-precision large CT based on JIS standards. The insulation method involves full molding with epoxy resin, making it a highly reliable current transformer that demonstrates exceptional strength in electrical properties, mechanical properties, weather resistance, humidity resistance, and chemical resistance. By adopting a directional ring core with good magnetization characteristics, it excels in error characteristics and is suitable for applications that measure large currents flowing through copper bars when integrated into large equipment. 【Features】 ■ Excellent error characteristics due to the adoption of a directional ring core with good magnetization characteristics ■ Demonstrates exceptional strength in electrical properties, mechanical properties, weather resistance, humidity resistance, and chemical resistance ■ Suitable for applications that measure large currents flowing through copper bars when integrated into large equipment *For more details, please refer to the PDF document or feel free to contact us.
Rated withstand current 12.5kA/0.125s and 12.5kA/0.25s current transformer JIS C 4620 (Appendix)
Current Transformers for Cubicle-Type High Voltage Receiving Equipment ECT-S12.5KA Series Common Specifications ■ Compliance Standards: JIS C 4620 (Appendix) ■ Rated Current: 10A/5A, 15A/5A, 20A/5A, 25A/5A, 30A/5A, 40A/5A, 50A/5A 75A/5A, 100A/5A, 120A/5A, 150A/5A, 200A/5A ■ Rated Burden: 10VA or 25VA or 40VA ■ Rated Overcurrent Constant: n>10 ■ Rated Frequency: 50Hz/60Hz ■ Accuracy Class: 1.0/1PS ■ Rated Short-Circuit Current: (1) ECT-S12.5KA-A Series = 12.5kA/0.125s or 12.5kA/0.16s common (2) ECT-S12.5KA-B Series = 12.5kA/0.25s
Hirai Electric Meter Standard Product: Current withstand 150 times/1 second, overcurrent constant n>10
This is a current transformer for circuits with a maximum voltage of up to 7.2kV/6.9kV. If you require an overcurrent intensity of 150 times/1 second and an overcurrent constant of n>10, you can use this series. It is primarily manufactured in accordance with JIS C 1731-1/JEC-1201, but we can also accommodate special specifications such as multiple taps or tertiary windings upon request. Production location: Made in Japan (Kyoto)
This is a design-registered product for low-voltage circuit round window-type current transformers.
Starting from a minimum of 60A, the lineup reduces the workload of wire winding. It uses a heat-resistant ABS resin case for the exterior, making it lightweight and easy to handle. This series is primarily manufactured in compliance with JIS C 1731-1, but products can also be made according to overseas standards such as IEC upon request. Production locations: Made in China / Korea / Japan (Kyoto) Design registration number: 1402960
For instrument transformers, small transformers, current transformers (CT), and zero-sequence current transformers (ZCT), please leave it to us.
Sanyo Electric Industrial Co., Ltd. designs and manufactures special transformers and current transformers for industrial equipment. Under the corporate philosophy of responding to user trust with excellent technical capabilities, we particularly utilize toroidal winding technology to meet a wide variety of needs. We also pursue cost performance through design, manufacturing, and direct sales, and we accommodate short delivery times and small quantities. 【Categories】 ■ Current Transformers (CT) ■ Transformers ■ Coils ■ Split-type Current Transformers ■ Reactors *For more details, please download the PDF or feel free to contact us.
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".
It can be matched with any type of wire. It is a product with good performance and price. ★★★ Instruments for distribution boards, control panels, distribution panels, and panels.
KBD is a three-phase CT that our company takes pride in. It has three holes of the same basic size, and the size of the CT has diversified to match the size of the wires. Our company has been developing three-phase CTs for the past ten years, which has led to their popularity in the domestic market due to our influence. For inquiries, please contact "lightstar_1979@yahoo.co.jp".
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, particularly suitable for air circuit breakers (ACB). The range of primary current is very wide, from 100 to 12,000, allowing for versatile use. The KBM series has diversified the size of the CT to match the size of the circuit breaker. It offers more varieties than busbar CTs for circuit breakers, making it a versatile product that can be used in various situations. By installing three units, it can also be used like a three-phase CT. For the KBM-03 and KBM-25, production will continue until this year, and it is scheduled to be discontinued next year. However, new products KBM-13 and KBM-16 have been released, so the total number of varieties remains at nine. For inquiries, please contact "lightstar_1979@yahoo.co.jp".
Current transformers installed with bolts! Please use it first. A new world will open up! Instruments for distribution boards, control panels, distribution panels, and panels.
The KBK-08 is slightly different from our other CTs. While other CTs pass the electric wires or busbars directly through the product, this product is designed to be mounted with bolts. Additionally, the KBK-08 is a product eligible for bidding with Korea Electric Power (standard items). For inquiries, please contact "lightstar_1979@yahoo.co.jp".
Directly mountable current transformer! Please use it first. A new world will open up! Instruments for distribution boards, control panels, distribution panels, and panels.
The KBK-□ is our company's direct mount current transformer. This product is not of the type that passes through wires or busbars; it is designed for direct mounting and use. There are three shapes available, and five different sizes. For inquiries, please contact "lightstar_1979@yahoo.co.jp".
ZCT for busbars used with leakage current alarms. A product with good performance and price. ★★★ Instruments for distribution boards, control panels, distribution panels, and panels.
It is designed to be installed on power lines under 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 alarm receiver. Features: - Designed with dimensions categorized by the type of applicable circuit breakers, optimizing space utilization. - The structure is designed so that the plastic surface does not touch the busbar after assembly, minimizing thermal deformation during busbar overheating. For inquiries, please contact "lightstar_1979@yahoo.co.jp".
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".
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.*
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).
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.
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.
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.
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.
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".
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".
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".
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".
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".
