LF2005-S/SP43，LF 2005-S/SP43

‌LF2005-S/SP43 Product Description — The High-Value Closed-Loop Current Sensor for Industrial Applications

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LF2005-S/SP43 ‌Key Features‌
‌Precision Closed-Loop Hall Sensing‌: Leveraging LEM’s patented closed-loop compensation technology, the LF2005-S/SP43 delivers ‌±0.3%‌ measurement accuracy, automatically correcting zero-point drift and nonlinear errors for consistent performance under dynamic loads — factory-calibrated and maintenance-free for life.
‌Wide Dual-Supply Compatibility‌: Operates reliably on ‌±15 V to ±24 V‌ dual-supply voltage, seamlessly integrating with industrial DC bus systems, UPS units, and multi-voltage platforms without requiring additional regulation circuitry.
‌Ultra-Fast Dynamic Response‌: With a response time of ‌<1 µs‌, it captures transient overcurrents and pulsed waveforms with precision, ideal for high-speed motor drives, welding systems, and switching power supplies requiring real-time feedback.
‌Industrial-Grade Electrical Isolation‌: Provides ‌>5 kV RMS‌ isolation between primary and secondary circuits, meeting ‌EN 50178‌ safety standards to protect operators and control systems in high-voltage power electronics environments.
‌Compact Disc-Type Mounting‌: Features a space-saving disc-style design supporting both vertical and horizontal installation, with standard industrial connectors (Molex, JST) for rapid, secure wiring in dense control panels.
‌Global Five-Year Warranty with Local Support‌: Backed by LEM’s worldwide five-year warranty, with dedicated technical support and spare parts availability through Beijing Xiangtai Hongyuan Technology Co., Ltd., ensuring minimal downtime and rapid resolution.

LF2005-S/SP43 ‌Technical Specifications‌

‌Rated Current‌: 2000 A (RMS)

‌Measurement Range‌: ±3000 A (DC, AC, Pulse)

‌Output Type‌: Current output (typical 400 mA)

‌Supply Voltage‌: ±15 V to ±24 V (dual supply)

‌Accuracy‌: ±0.3%

‌Response Time‌: <1 µs

‌Isolation Voltage‌: >5 kV RMS

‌Operating Temperature‌: -40°C to +85°C

‌Mounting Method‌: Disc-type, terminal block connection

‌Connector Options‌: Molex, JST industrial-standard interfaces

‌Housing Material‌: UL 94-V0 flame-retardant plastic, lightweight and corrosion-resistant

‌Certifications‌: EN 50178, CE, RoHS

LF2005-S/SP43 ‌Applications‌
The LF2005-S/SP43 serves as a core sensing element in industrial power electronics systems, widely deployed in:

‌Industrial Drive Systems‌: Closed-loop feedback and overcurrent protection in VFDs, servo drives, and motor controllers

‌Power Conversion Equipment‌: Input/output current monitoring in SMPS, UPS, and DC-DC converters

‌Welding and Thermal Processing‌: Dynamic current control in high-power arc welders and induction heating furnaces

‌Renewable Energy Systems‌: Precise charge/discharge current sampling in photovoltaic inverters and battery energy storage systems (BESS)

‌Rail Transportation‌: Stable signal acquisition in traction converters, auxiliary power units, and braking resistor monitoring

‌Why Choose LF2005-S/SP43?‌
In the competitive landscape of industrial current sensors, the LF2005-S/SP43 stands out as a ‌balanced, high-reliability solution‌ engineered for cost-sensitive, high-volume deployments:

‌Closed-Loop Accuracy at Value Price‌: At ‌±0.3% precision‌, it outperforms open-loop alternatives while maintaining a lower total cost of ownership than higher-end closed-loop models — delivering 95%+ of the performance of premium variants at a more accessible price point.

‌Plug-and-Play 400 mA Output‌: Direct compatibility with PLCs, DCS, and data acquisition modules eliminates the need for external signal conditioning circuits, reducing system integration time by over 25%.

‌Full Thermal Range Operation‌: Maintains calibrated accuracy across the entire ‌-40°C to +85°C‌ range, making it suitable for uncontrolled environments such as outdoor enclosures or high-temperature machine bays.

‌Global Warranty, Local Responsiveness‌: Five-year global coverage paired with on-the-ground technical support in China ensures prompt assistance, documentation access, and fault diagnosis — no international delays.

‌Optimized for Mass Deployment‌: Designed for reliability and ease of integration, it reduces field failures and maintenance overhead — making it the ideal baseline sensor for industrial automation, energy systems, and EV charging infrastructure.