Fujian Smrtr Technology Co., Ltd. (Zentar®) is a world-class leader in the design and manufacture of magnetic components for electrical safety and precision power measurement. Founded in 1993, our journey began with a vision to provide the global electrical industry with high-accuracy, reliable, and intelligent current sensing solutions.
Based in the high-tech hub of Xiamen, we operate a state-of-the-art 40,000-square-meter facility and employ a dedicated workforce of approximately 410 experts. Our team, led by renowned professors and 20 senior engineers, specializes in providing customized services that bridge the gap between design concepts and large-scale manufacturing of Intelligent Electric Metering Current Transformers.
With an annual capacity of 50 million magnetic components and 5 million electrical safety products, we are uniquely positioned to serve international markets including Europe, the Americas, and Southeast Asia. Since implementing ISO9001 in 2002 and advancing to IATF 16949 standards, our quality control ensures every component meets the rigorous demands of modern infrastructure.
The global shift from analog to smart metering is accelerating. Modern current transformers (CTs) are no longer passive components but integral parts of the IoT ecosystem, enabling real-time data analytics for utilities and industrial plants.
With the rise of solar and wind energy, the demand for CTs that can handle bidirectional energy flow and high-frequency harmonics has surged. Our intelligent CTs are optimized for green energy inverters and battery storage systems.
Electric vehicle charging stations require compact, high-precision metering for accurate billing and load management. Our micro-current transformers are essential for the next generation of Level 2 and DC fast chargers.
The landscape of power monitoring has evolved significantly. Traditional "instrument transformers" are being replaced by Intelligent Metering Current Transformers that offer higher accuracy classes (Class 0.5S and 0.2S), wider dynamic ranges, and superior immunity to external electromagnetic interference. As a leading exporter, Fujian Smrtr Technology stays ahead by integrating advanced core materials like nanocrystalline and silicon steel, ensuring minimal phase shift and maximum linearity across varied load conditions.
In high-density data centers and commercial buildings, energy efficiency is paramount. Our split-core current transformers and Rogowski coils allow for easy retrofitting without disconnecting power, facilitating sub-metering cost allocation and peak load analysis. Procurement managers globally seek our solutions for building management systems (BMS) to achieve LEED and ISO 50001 certifications.
In regions like SE Asia and South America, infrastructure upgrades are focusing on reducing line losses. Our pole-mounted transformers and high-voltage power metering boxes provide the durability needed for harsh outdoor environments while delivering precision data to utility providers.
As a Tier-1 Chinese manufacturer, Fujian Smrtr Technology offers a unique blend of innovation and cost-effectiveness. Our advantages include:
Advanced equipment and rigorous testing ensure the reliability of every Zentar® product.










Equipped with automatic winding machines and accurate testing equipment, we provide strong support for customers requiring high-volume orders with consistent quality.
Our commitment to Electrical Safety and Power Metering is backed by decades of field experience. We don't just manufacture; we consult. Whether you are dealing with protection against electric shock or identifying complex electrical faults, our engineers provide workable solutions. Our split-core technology is specifically engineered for dynamic energy consumption and peak load analysis, making it a favorite for smart city developers and industrial energy auditors.
As an IATF 16949 certified factory, our production adheres to the automotive-grade quality management system, which translates to unmatched reliability in the power sector. We are dedicated to the "Reach & Development" philosophy, ensuring that our products not only meet current IEC standards but are ready for the future of the smart grid.
READ MORE ABOUT OUR TECHNOLOGY
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