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  9. Residual Current Transformer (RCT) - Solid-Core Type
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Residual Current Transformer (RCT) - Solid-Core Type

Through-Hole Current Transformer is designed for cable circuit applications, featuring compact structure and flexible installation. With bore diameters ranging from 30mm to 200mm, it accommodates main circuit currents from 63A to 2000A. The product offers accuracy classes from 0.2 to 1, meeting the latest national standards for balance characteristics. Unbalanced current output can be as low as 3mA, significantly reducing false alarms caused by magnetic interference. The full series complies wit


Product Overview:

The through core current transformer is mainly used in cable circuit environments. It has a simple structure, small size, and flexible application. There are multiple through core holes corresponding to the cable specifications used in the main circuit. The through core diameter of this series of products ranges from 30mm to 200mm, and the main circuit current includes 63A~2000A. This series of products can meet the technical requirements of different accuracies such as 0.2 level, 0.5 level, and 1 level; At the same time, it can also meet the strict requirements of the new national standard for balance characteristics, and the unbalanced current output value can be better than 30mA, 10mA, 5mA, or even 3mA, greatly reducing false alarms caused by interference from the main circuit current magnetic field, providing sufficient guarantee for the reliability of the equipment. The excellent and advanced production process ensures its accuracy level, reliability and other technical requirements. This series of products meets the requirements of GB-14287.2-2005 and GB14287.2-2014.






Product Features:

  • Robust Core Construction: Encapsulated in flame-retardant epoxy resin for enhanced mechanical stability and environmental protection.
  • High-Performance Core Materials: Utilizes high-permeability nickel steel or nanocrystalline alloys, offering excellent linearity and high sensitivity.
  • Superior Electrical Performance: Delivers outstanding balance characteristics and strong resistance to electromagnetic interference (EMI).





                                                               1.ZH--JCTY Circular Series:

                                                                      Dimensional Parameters

Model specifications Reference current A B C D E F
ZH-JCTY25AL 63A 55 59 45 4 21 29
ZH-JCTY45AL 100A 78 84 66 5 24 32
ZH-JCTY65AL 225A 98 104 86 5 24 32
ZH-JCTY80AL 400A 113 119 101 5 26 34
ZH-JCTY100AL 630A 135 139 123 5 26 34
ZH-JCTY150AL 1000A 187 195 170 5 27 35



























Product parameters:




Electrical parameters Mechanical parameters




Operating Frequency 50-400KHZ dielectric strength 2.5KV/1mA1mi




INPUT 10mA-5A insulation resistance DC500V/1000MΩ/min




Measuring range 10%1n-130%in iron core Nickel steel or nanocrystals




Rated Output 0-1v(A或)0-0.25mA internal structure Environmentally friendly epoxy resin casting




Difference value ≤±0.1% construction scheme Environmentally friendly epoxy resin casting




Phase difference ≤±10分 Connection Terminal type/stranded wire type































2.ZH-JCTY Square Series: Size parameters







型号规格 参考电流 A B C D E F G
ZH-JCTYF1025 ≦100A 100 25 125 53 19 150 140
ZH-JCTYF1432 ≤225A 140 34 172 71 24 202 186
ZH-JCTYF1832 ≤400A 180 34 215 71 24 245 230
ZH-JCTYF2245 ≤630A 220 47 250 85 24 280 265
ZH-JCTYF2645 ≤800A 260 47 293 85 24 325 308



























Product parameters:




Electrical parameters Mechanical parameters




Operating Frequency 50-400KHZ dielectric strength 2.5KV/1mA1mi




INPUT 10mA-5A insulation resistance DC500V/1000MΩ/min




Measuring range 10%1n-130%in iron core Nickel steel or nanocrystals




Rated Output 0-1v(A)0-0.25mA internal structure Environmentally friendly epoxy resin casting




Difference value ≤±0.1% construction scheme Screw fixation




Phase difference ≤±10 cent Connection Terminal type/stranded wire type








































3.ZH--JCTX Circular Series: Dimensional Parameters





Model Specifications Reference Current A B C D E

ZH-JCTX30AL 36A 83.5 60 75 5 28

ZH-JCTX45AL 100A 104 83 95 5 28

ZH-JCTX65AL 225A 124 103 115 5 28

ZH-JCTX80AL 400A 138 118 130 5 28

ZH-JCTX100AL 630A 158 138 150 5 28



















Product parameters:




Electrical parameters Mechanical parameters




Operating Frequency 50-400KHZ dielectric strength 2.5KV/1mA1mi




INPUT 10mA-5A insulation resistance DC500V/1000MΩ/min




Measuring range 10%1n-130%in iron core Nickel steel or nanocrystals




Rated Output 0-1v(A或)0-0.25mA internal structure Environmentally friendly epoxy resin casting




Difference value ≤±0.1% construction scheme Screw fixation




Phase difference ≤±10分 Connection Terminal type/stranded wire type

















































4.ZH-JCTXF Square Series: Size Parameters







Model Specifications Reference Current A B C D E F G
ZH-JCTXF1025 ≦100A 155 63 105 30 148 5 28
ZH-JCTXF1432 ≤225A 205 75 145 35 198 5 28
ZH-JCTXF1832 ≤400A 245 75 184 35 238 5 28
ZH-JCTXF2245 ≤630A 295 96 229 50 288 5 28



























Product Parameters:




Electrical parameters Mechanical parameters




Operating Frequency 50-400KHZ dielectric strength 2.5KV/1mA1mi




INPUT 10mA-5A insulation resistance DC500V/1000MΩ/min




Measuring range 10%1n-130%in iron core Nickel steel or nanocrystals




Rated Output 0-1v(A)0-0.25mA internal structure Environmentally friendly epoxy resin casting




Difference value ≤±0.1% construction scheme Screw fixation




Phase difference ≤±10cent Connection Terminal type/stranded wire type




Previous : CTKY Series Circular Split-Core Residual Current Transformer (RCT) Next : Miniature Precision Voltage Transformer
Residual Current Transformer (RCT) - Solid-Core Type
Through-Hole Current Transformer is designed for cable circuit applications, featuring compact structure and flexible installation. With bore diameters ranging from 30mm to 200mm, it accommodates main circuit currents from 63A to 2000A. The product offers accuracy classes from 0.2 to 1, meeting the latest national standards for balance characteristics. Unbalanced current output can be as low as 3mA, significantly reducing false alarms caused by magnetic interference. The full series complies wit
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