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  9. ZH-JCTK Series - Split-Core Current Transformer
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ZH-JCTK Series - Split-Core Current Transformer

Designed for split-core (clamp-on) current transformers, this product is manufactured from high-permeability, low-loss premium soft magnetic material and features a precision split-core structure. It allows easy clamp-on installation without interrupting the measured conductor, enabling efficient online current monitoring and measurement. With excellent initial permeability and favorable saturation characteristics, it ensures high linearity and measurement accuracy across a wide current range. T

Product Overview:

Name: Open close current transformer

Model: ZH-JCT-K45, ZH-JCT-K65, ZH-JCT-K80, ZH-JCT-K100

Rated current: 0-1500A

Rated output: 1A/5A



Product Features:

High-Performance Core Material
The iron core is constructed from high-permeability nickel magnetic steel, offering exceptional magnetic permeability, high saturation flux density, and long-term operational stability.

Robust Encapsulation
Encased in epoxy resin through precision casting, the shell is flame-retardant, highly insulating, and provides superior sealing against moisture and contaminants.

Convenient Installation
Featuring an open-core design, the transformer can be directly clamped around the cable without disassembly, ensuring quick and effortless installation.

Flexible Cable Compatibility
Supports installation on cables with large diameters and substantial thicknesses, accommodating a wide range of industrial and power distribution applications.

Premium Winding Material
The winding is made of international-grade QA-enameled copper wire, with insulation resistance exceeding 100 MΩ and excellent dielectric strength for reliable high-voltage performance.


Application scope:

✔  Electrical Fire Monitoring

✔  Earth Leakage Fire Protection Systems

✔  Electromagnetic Relay Protection

✔  Small Current Grounding Systems



Product size：
Model specifications External dimensions
Φ A B C D G
ZH-JCTK45 45mm 106 82 28 92 M6
ZH--JCTK65 65mm 126 102 28 108 M6
ZH-JCTK80 80mm 138 112 28 120 M6
ZH-JCTK100 100mm 160 132 28 142 M6







Product parameters：
Product model Current ratio Rating （V/A) Power factor COSØ Accuracy error Output Operating Frequency
ZH-JCTK45 100/5 0.1VA 1 1% 1.5 square lead wire 50- 400HZ
200/5 0.1VA 1 0.50%
300/5 1VA 0.8 0.50%
400/5 1VA 0.8 0.50%
ZH-JCTK65 300/5 1VA 0.8 0.50%
400/5 1.5VA 0.8 0.50%
500/5 2.5VA 0.8 0.50%
600/5 2.5VA 0.8 0.50%
ZH-JCTK80 400/5 2.5VA 0.8 0.50%
500/5 2.5VA 0.8 0.50%
600/5 2.5VA 0.8 0.50%
800/5 5VA 0.8 0.50%
ZH-JCTK100 600/5 2.5VA 0.8 0.50%
800/5 5 0.8 0.50%
1000/5 5 0.8 0.50%
1500/5 5 0.8 0.50%


Note: The relevant data in this list is only for customers to use for preliminary evaluation and selection. Specific information is subject to the product specifications. Customization can be made according to customer needs.


Previous : ZH Series Ring Main Unit (RMU) Series - Split-Core Current Transformer Next : ZH-JCT Series - Split-Core Current Transformer
ZH-JCTK Series - Split-Core Current Transformer
Designed for split-core (clamp-on) current transformers, this product is manufactured from high-permeability, low-loss premium soft magnetic material and features a precision split-core structure. It allows easy clamp-on installation without interrupting the measured conductor, enabling efficient online current monitoring and measurement. With excellent initial permeability and favorable saturation characteristics, it ensures high linearity and measurement accuracy across a wide current range. T
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