LEM LAX 100-NP Multi-Range Selectable Closed-Loop Hall Effect Current Sensor

LAX 100-NP Product Overview

The LAX 100-NP is a multi-range configurable current sensor based on closed-loop Hall effect technology, from LEM (Switzerland), the global leader in electrical measurement. Its standout feature is that by simply configuring the PCB primary connection pattern, a single sensor can achieve flexible switching between five different ranges: 16.67A, 25A, 33.33A, 50A, and 100A.

With an ultra-low profile height of just 16.35mm, it is ideal for space-constrained applications, easily integrating near the power modules of VFDs, UPS systems, and compact home appliances. Utilizing closed-loop Hall technology, it delivers accuracy up to ±0.91%, a bandwidth covering DC~300kHz, and a response time of just 0.2µs.

LAX 100-NP Key Technical Specifications

LAX 100-NP Key Advantages

One Sensor, Multiple Ranges: By configuring the primary pin turns, a single sensor covers multiple specifications from 16A to 100A. Reduces part numbers, simplifies inventory management, and lowers bulk purchasing costs

<0.2µs Ultra-Fast Response + 300kHz Ultra-High Bandwidth: Accurately captures high-frequency switching transients and PWM current harmonics — provides high-fidelity current feedback for VFDs and high-frequency power supplies

16.35mm Ultra-Low Profile: Designed for low-height enclosures and space-constrained compact equipment — easily integrates onto PCBs, greatly enhancing design flexibility

±0.91% High Accuracy + ±0.1% Linearity: Closed-loop compensation technology ensures accurate measurement across the full range — typical linearity error only ±0.06%

Superior Noise Immunity: Closed-loop architecture provides high external magnetic field rejection — EN 50178 certified — stable operation in complex industrial EMI environments

No Insertion Loss: Closed-loop Hall technology adds no additional energy loss to the primary circuit — maintains system efficiency

-40℃~+85℃ Wide Temperature Range: Covers applications from cold outdoor to high-temperature industrial environments — compliant with EN 50178 safety standards

5-Year Factory Warranty: LEM quality commitment — long-term supply assurance

Why Choose the LAX 100-NP?

One Sensor, Five Ranges: No need to stock multiple models for different current levels — a single SKU covers from 16A to 100A — reduces procurement and management costs

<0.2µs Ultra-Fast Response: Accurately captures IGBT switching transients — provides timely and reliable triggering signals for overcurrent protection

300kHz Ultra-High Bandwidth: Accurately measures current waveforms up to 300kHz — perfectly matches the output characteristics of modern high-frequency switching power supplies and VFDs

16.35mm Ultra-Low Profile Design: Vertically saves PCB space — industry-leading low profile — fits 1U/2U and other compact enclosures

5-Year Warranty + High Reliability: EN50178 compliant — designed for industrial 24/7 continuous operation — backed by 5-year factory warranty

±0.91% Full-Temperature Accuracy: From -40°C to +85°C, accuracy remains stable and reliable — no additional calibration required

LAX 100-NP Target Applications

Industrial VFDs and servo drives, uninterruptible power supplies (UPS), switch-mode power supplies (SMPS), inverter air conditioners and home appliances, small renewable energy inverters, welding power supplies, battery management systems