Fujian Smrtr Technology Co., Ltd. (Zentar®) — Specialized in current transformers, RCD fused connection units, and wireless energy monitors for global electrical safety and power measurement applications.
Founded in 1993, Smrtr Technology is a leading manufacturer of magnetic components for electrical safety and power measurement. Operating from Xiamen with approximately 410 employees, we provide customized consulting, design, and manufacturing services for current transformers, RCD fused connection units, and wireless energy monitors.
We specialize in magnetic ring cores and current transformers for electrical safety and power metering — one of the leading suppliers of protection technologies against electric shock and electrical faults. Our split core current transformers and Rogowski coils are trusted for energy efficiency monitoring, sub-metering cost allocation, dynamic energy consumption analysis, and automation applications.
Team led by professors and 20 senior engineers delivering workable solutions and technical support.
ISO 9001 implemented since 2002, continuously improved under IATF 16949 standards.
40,000 m² workshop with accurate testing equipment and automatic winding machines.
50 million magnetic components and 5 million electrical safety products annually.
Our state-of-the-art production facility in Xiamen integrates advanced automated equipment with rigorous quality control at every stage — from wire wrapping to final testing.
With over three decades of expertise in magnetic component manufacturing, we deliver precision, reliability, and innovation to electrical safety and power metering applications worldwide.
A dedicated research team led by university professors and 20 senior engineers ensures continuous innovation and customer-specific technical solutions for even the most demanding applications.
Quality management systems implemented since 2002 under ISO 9001, with ongoing improvements aligned to IATF 16949 — guaranteeing consistent product quality and process reliability.
Annual capacity of 50 million magnetic components and 5 million electrical safety products, supported by automatic winding machines and a 40,000 m² manufacturing facility.
From initial consulting to design and production, we provide end-to-end customized solutions for current transformers, Rogowski coils, and RCD fused connection units tailored to your specifications.
With ERP systems integrated since 2008, we streamline supply chain management, production scheduling, and order tracking — ensuring fast turnaround and on-time delivery globally.
Specialized in protection against electric shock and electrical faults, our split core CTs and Rogowski coils serve sub-metering, dynamic energy consumption, and peak load analysis applications.
Our quality management framework is built on internationally recognized standards, ensuring every product meets the highest benchmarks for electrical safety and performance.
Implemented since 2002, our ISO 9001 quality management system underpins every process — from raw material sourcing through to final product dispatch.
Since 2002We have progressively aligned our quality procedures with IATF 16949 automotive quality management requirements, ensuring precision and defect prevention at every stage.
Automotive GradeSince 2008, our fully integrated ERP system enables real-time production tracking, inventory management, and quality data analysis for continuous improvement.
Since 2008From magnetic ring cores to precision current transformers, every Smrtr product is engineered for reliability, accuracy, and long-term performance in demanding electrical environments.
Our flagship product line includes split core current transformers, toroidal transformers, and magnetic ring cores — manufactured with automatic winding machines and precision soldering for consistent accuracy in power metering and electrical safety applications.
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For energy efficiency monitoring and automation applications.
Electrical safety protection against shock and faults.
Sub-metering and peak load analysis solutions.
High-permeability cores for power metering applications.
Our 40,000 m² Xiamen facility houses advanced automated production lines, precision testing laboratories, and dedicated quality control stations — all designed to support high-volume, high-accuracy magnetic component manufacturing.
Trusted by electrical safety and power metering companies worldwide, our clients rely on Smrtr Technology for consistent quality, responsive support, and technical expertise.
"Smrtr Technology's current transformers have been integral to our smart metering rollout across Europe. Their precision, consistency, and ability to customize to our exact specifications is unmatched. Lead times are always on schedule."
"We have been sourcing split core CTs from Zentar® for over 8 years. Their quality control under ISO 9001 and IATF 16949 gives us full confidence in every shipment. Their R&D team also helped us develop a custom Rogowski coil solution."
"The production capacity at Smrtr is impressive — 50 million units annually and they still maintain exceptional quality. Their ERP-driven supply chain means we always have visibility on our orders. Highly recommended for high-volume projects."
Whether you need standard magnetic components or fully customized current transformer solutions — our expert team at Smrtr Technology is ready to support your project from concept to delivery.
Smrtr Technology