0.1A 1000A Split Core Current Transformer Clamp-on Probe Ma/a Mv/a
S11 200kVA 10kv Three-Phase Electric Oil Immersed Power Distribution Transformer
S11 Series 30kv Power Distribution High Voltage Dry Type Transformer
10kv 630kVA Epoxy Resin Cast Dry Type Transformer
YHDC Split Core Current Transformer SCT Series High Accuracy 1A to 600A
TRSK-24A Split Core Current Transformer 50A 100mA AC Transreducer
10kv 20kv 35kv High Voltage Cast Resin Compact Dry-Type Transformer
2500kVA Epoxy Cast Resin Dry Type Power Distribution Transformer OEM
As the world pivots toward electrification and high-performance power electronics, the demand for Type B RCD Current Transformers has reached an all-time high. Unlike traditional Type A or AC protectors, Type B technology is specifically designed to detect smooth DC residual currents alongside sinusoidal and pulsating AC. This is critical in modern industrial ecosystems where Variable Frequency Drives (VFDs), EV charging infrastructure, and large-scale PV (solar) inverters are standard.
Global industrial standards, such as IEC 62423, are now mandating Type B protection in applications where residual DC current might exceed 6mA. This regulatory shift has transformed Type B RCD current transformers from a niche specialty to a core requirement for international safety compliance. In Europe and North America, the rapid rollout of EV charging stations (both AC and DC) has accelerated the need for high-precision magnetic components capable of sophisticated flux-gate sensing or advanced hall-effect detection.
Essential for Mode 3 and Mode 4 charging stations to ensure DC leakage doesn't blind the upstream safety systems.
Crucial for PV inverters and energy storage systems (ESS) where DC/AC conversion is constant and leakage risks are high.
Protects complex machinery driven by frequency converters, preventing equipment damage and ensuring personnel safety.
Miniaturization and digitalization are the two pillars driving current transformer evolution. Global procurement teams are no longer just looking for "coils"; they are seeking smart sensing modules. These include integrated current transformers with digital signal processing (DSP) capabilities that can communicate via IoT protocols. This allows for predictive maintenance—identifying insulation degradation before a fault occurs.
Furthermore, the sourcing requirement for global enterprises has shifted towards sustainability and extreme reliability. Procurement officers from the EU, USA, and Southeast Asia prioritize factories that can demonstrate high-volume consistency through automated production. The reliance on China as a hub for magnetic components remains strong due to the unparalleled supply chain integration, from raw silicon steel and nanocrystalline cores to finished epoxy resin casting.
Established in 1993, Fujian Smrtr Technology Co., Ltd. (Zentar®) stands as a titan in the manufacturing of magnetic components for electrical safety and power measurement. Based in the strategic industrial hub of Xiamen, we employ a dedicated workforce of 410 professionals focused on excellence.
Our expertise spans the entire spectrum of consulting, design, and manufacturing for Type B RCD current transformers, RCD fused connection units, and wireless energy monitors. We don't just sell products; we provide engineered solutions that safeguard lives and infrastructure globally.
Our commitment to quality is backed by ISO9001 certification since 2002 and current IATF 16949 standards, ensuring our products meet the rigorous demands of the automotive and industrial sectors.
Utilizing state-of-the-art automatic winding machines and precision testing equipment to guarantee zero-defect production.
As a leading China factory and exporter, we offer distinct advantages that allow our partners to remain competitive in their local markets. Whether it's sub-metering cost allocation in Southeast Asia, peak load analysis in Australia, or dynamic energy consumption monitoring in European smart cities, our products are engineered for localized application scenarios.
Lcwd 35kv Outdoor High Voltage Porcelain Insulated Oil-Immersed CT
Scb14 10kv Dry Type Power Transformer Step Down Copper/Aluminum
10kv/0.4kv/2000kVA Three-Phase Dry-Cast Power Distribution Transformer
1000kVA Energy-Efficient Three-Phase Electronics Current Dry Transformer
Lsy-10/120 Three Phase Integrated Zero Sequence Current Transformer
Toroidal Transformer Single/Three Phase Step up Pad Mounted Dry Type
Outdoor Waterproof Split Core Current Transformer Toroidal Type
Outdoor Waterproof Split Core CT Potential & Instrument Transformer
Smrtr Technology