Est. 1995 · Jiangyin, Jiangsu, China
Jiangyin Spark Electronic
Technology Co., Ltd.
A trusted manufacturer of precision current transformers and Rogowski coils, powering energy monitoring and smart grid solutions across the globe since 1995.
Our Story
Founded in 1995 in Jiangyin City, Jiangsu Province -- strategically located near Shanghai port -- Jiangyin Spark has grown from a small workshop into a globally recognized OEM/ODM manufacturer of current measurement solutions.
Over nearly three decades, we have specialized in designing and manufacturing UL2808 Split Core Current Transformers, Flexible Rogowski Coils, Clamp-on CTs, Solid Core CTs, and PCB Mount Toroid CTs -- serving energy monitoring, smart grid, solar, EV charging, and data center applications worldwide.
Our ISO-certified manufacturing processes, rigorous quality controls, and deep engineering expertise allow us to deliver reliable, compliant products with industry-leading lead times.
Certifications & Quality Standards
Every product we ship meets the most stringent international safety and quality requirements.
Safety & Compliance Specs
ISO 45001 Commitment
Manufacturing Capabilities
From engineering design to final inspection -- every step is performed in-house at our 6,000 m² facility.
Core Product Lines
- UL2808 Split Core Current Transformers
- Flexible Rogowski Coils
- Clamp-on Current Transformers
- Solid Core CTs
- PCB Mount Toroid CTs
Popular Ratings
- 50A / 333mV
- 100A / 0.333V
- 100A / 33.3mA
- 100A / 40mA
- 200A / 80mA
Output Options
- Voltage: 333mV, 0.5V, 0-3V, 5Vdc
- Current: mA output
- 4-20mA output
- Primary: 1A-120A AC
- Frequency: 50/60Hz
OEM & ODM Friendly
We support full customization -- from window size and lead wire length to connector types (Molex, Amphenol, and more). Our engineering team works closely with customers to meet specific application requirements.
Application Industries
Our current transformers are deployed across a wide range of energy and power management applications.
How to Order
A streamlined process from specification to delivery -- designed to get you the right product, fast.
Provide Specifications
Share your requirements: input current, output type, lead wire length, terminal needs, and window size.
Model Recommendation
Our engineers review your specs and recommend the most suitable model from our product range.
Quotation
We provide a competitive quotation based on your order quantity and customization requirements.
Free Samples
Standard samples ship within 3 days -- typically free with freight-collect via your UPS or DHL account.
Sample Testing
You receive and test the samples. Special lead wires or terminals may require 5-15 days.
Production & Delivery
Once approved, we proceed with production. Standard lead time: 10-15 days. 10K pcs in 7-10 days.
Ready to Work With Jiangyin Spark?
Whether you need standard products or fully customized CT solutions, our team is ready to support your project from specification to delivery.