Product Center Overview

Precision Current Transformer Solutions

Open-Close Type Residual Current Transformer(Open By Hand)
Circular residual current transformer with hand-operated opening, suitable for 63A–2000A systems. High accuracy, excellent balance, and strong interference resistance ensure reliable monitoring in smart power and fire protection systems.
Open-Close Type Rectangular Residual Current Transformer
Circular switching residual current transformer designed for cable circuits, offering compact structure, flexible installation, and high reliability. Supports through-hole diameters from 30mm to 200mm and main currents from 63A to 2000A. Features excellent balance characteristics, strong anti-interference performance, and compliance with national standards.
Open-Close Type Circular Residual Current Transformer – CTK
Circular switching residual current transformer designed for cable circuits, offering compact structure, flexible installation, and high reliability. Supports through-hole diameters from 30mm to 200mm and main currents from 63A to 2000A. Features excellent balance characteristics, strong anti-interference performance, and compliance with national standards.
Open-Close Type Circular Residual Current Transformer- CTK11
Compact and versatile circular residual current transformer for cable circuits. Supports various cable diameters and currents, offers high precision, excellent balance, and strong anti-interference performance, ensuring reliable operation and minimizing false alarms.
Rectangular Combined Residual Current Transformer – CTYF2
Compact, versatile, and reliable residual current transformer designed for cable circuit environments. Supports multiple through-hole diameters and main circuit currents from 63A to 2000A, meeting high accuracy standards while minimizing false alarms caused by electromagnetic interference. Ideal for electrical fire monitoring and combined power protection systems.
Rectangular Combined Residual Current Transformer – CTYF1
High-precision rectangular residual current transformer designed for cable circuits, offering wide aperture range, strong anti-interference capability, and reliable detection performance for intelligent power and fire monitoring systems.
Circular Combined Residual Current Transformer – CTY2
Designed for electrical fire monitoring and smart power systems, this transformer features high sensitivity, strong anti-interference performance, and flexible installation for reliable current detection in complex cable environments.
Circular Combined Residual Current Transformer – CTY1
A compact circular combined residual current transformer designed for cable circuit applications, offering high accuracy, strong anti-interference performance, and reliable leakage current detection.
Large Combined Residual Current Transformer – CTYD
Designed for reliable residual current detection in cable systems, this transformer features high sensitivity, strong stability, and excellent electromagnetic resistance for demanding industrial applications.
Customization Process Guide

From Concept to Mass Production

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Requirement Analysis & Solution Design
We go beyond order-taking by analyzing your application (PV, storage, EV charging) to define key parameters—turns ratio, accuracy, linearity, and dimensions—while optimizing integrator matching and anti-interference design for Rogowski coils.
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Rapid Product Prototyping
Once the plan is confirmed, we initiate rapid prototyping. Utilizing our modular core inventory and flexible winding processes, we produce functional samples within 15-20 days, allowing you to proceed with circuit testing and validation ASAP.
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Rigorous Testing & Validation
Samples undergo strict functional and environmental testing, including ratio and phase error calibration, as well as withstand voltage, temperature rise, and EMC tests to meet IEC 61869 and application requirements.
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Scalable Mass Production
After approval, we move to mass production using automated winding and epoxy casting lines, ensuring consistent magnetic performance and insulation reliability, with monthly capacity over 500,000 units.
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Final QC & Global Delivery
We perform AQL sampling or 100% inspection before shipment to ensure zero defects in appearance and performance. Familiar with export packaging standards, we provide shock-proof and moisture-proof packing for on-time global delivery.

Trusted Quality, Proven Performance

Committed to Deliver Reliable Sensing Solutions

Get in Touch
Contact our team anytime for product inquiries, technical support, or project consultation. We are ready to assist you with responsive service and professional guidance.
Call US:
+86-18118867286

About Us

Jiangyi Yucheng Electric, Jiangsu, China, makes current sensors and smart meters for global power and industrial applications, offering reliable, high-accuracy, standards-compliant solutions.

Contact Info

No.5 Tongxin Road, Qingyang Town,Jiangsu,China