LA100-P/SP13 Current Sensor Product Details

Precision Closed-Loop Hall-Effect Current Sensor from LEM (Switzerland)

LA100-P/SP13 Product Overview

The LA100-P/SP13 is a high-quality closed-loop Hall-effect current sensor from LEM, a world leader in current measurement solutions. This model belongs to the LA series and is designed for high-precision measurement of DC, AC, and pulsed currents in electronic circuits. It provides complete galvanic isolation between the primary circuit (high power) and the secondary circuit (electronic circuits), ensuring safe and stable system operation.

As a PCB-mounted current sensor, the LA100-P/SP13 delivers an ultra-fast response time of 1 µs and a bandwidth of up to 200 kHz, making it an ideal current monitoring solution for industrial automation, power supplies, motor drives, and related applications. The LEM brand offers a five-year warranty, guaranteeing reliability you can trust.

LA100-P/SP13 Key Technical Specifications

LA100-P/SP13 Core Product Advantages

Extremely Fast Response – 1 Microsecond Output

With a response time of less than 1 µs, the LA100-P/SP13 instantly captures sudden current changes, revealing even microsecond-level pulse spikes. For equipment such as frequency converters and servo drives that require real-time protection, a difference of milliseconds in response time can mean the difference between equipment damage and continuous operation.

High Measurement Accuracy – Only ±0.45% Error

Based on closed-loop Hall-effect compensation technology, this sensor achieves up to ±0.45% accuracy across the full measuring range. Combined with excellent linearity and low temperature drift, it provides stable and reliable current measurement data to meet demanding industrial requirements.

Wide Measuring Range – 100A Rated / 160A Peak

The design handles both normal operation and short-term overload with ease: rated 100A and peak measurement range up to ±160A. The 100mA output signal corresponds to the primary current at a ratio of 1:1000, simplifying signal acquisition and processing, thereby reducing system design complexity.

Galvanic Isolation for System Safety

Complete galvanic isolation between the primary and secondary circuits effectively prevents high-side interference and damage from reaching the low-voltage measurement circuit, protecting equipment and operator safety. The insulated plastic case meets UL 94-V0 flammability standards, further enhancing reliability in harsh environments.

Excellent Immunity to Interference and Overload Capability

High immunity to external interference and tolerance to current overloads ensure stable output even in complex electromagnetic environments, preventing false readings or output drift caused by external noise.

LA100-P/SP13 Applications

The LA100-P/SP13 is widely used in:

AC variable speed drives – real-time monitoring of inverter output current for smooth motor operation

Servo motor drives – precise current feedback for high-performance closed-loop control

Static converters for DC motor drives – reliable current monitoring

Battery-powered equipment – low power consumption extends portable device runtime

Uninterruptible power supplies (UPS) – monitors battery charge/discharge current to ensure backup power reliability

Switched-mode power supplies (SMPS) – accurate current measurement during power conversion

Welding power supplies – withstands high current surges in welding applications

Renewable energy systems – suitable for solar inverters, energy storage systems, and other new energy applications

Application information compiled from LEM datasheets and authorized distribution platforms.