HAX1500-S High-Current Hall Effect Sensor

HAX1500-S Product Overview

The HAX1500-S is a high-current industrial open-loop Hall effect current sensor from LEM, offering a nominal primary current of 1500 A with a measurement range up to ±4500 A. It accurately measures DC, AC, pulsed, and mixed currents while ensuring safe electrical isolation between the primary (high-voltage) circuit and the secondary (measurement) circuit. The HAX series covers a wide current range from 500 A to 2500 A, and the HAX1500-S is the optimal choice for high current capacity combined with excellent cost-performance.

As a global leader in current and voltage measurement, LEM products are trusted by engineers worldwide across industrial, energy, rail transportation, and automation applications, thanks to their superior accuracy, reliability, and rugged construction.

HAX1500-S Key Specifications

Why Choose HAX1500-S?

±4500A wide measurement range – With a nominal rating of 1500 A, the HAX1500-S can measure up to ±4500 A – approximately three times the rated value. This headroom handles transient current surges, making it ideal for inverter start-up, equipment short-circuit protection, and other high-current dynamic scenarios. Engineers can design with confidence without fear of unexpected overloads.

±1% accuracy + 5 µs fast response – Achieving ±1% accuracy at 1500 A is remarkable. Coupled with an ultra-fast 5 µs response time, this sensor is perfect for precision current monitoring or fast fault protection, giving your system critical time to react.

All-waveform compatibility – one unit for AC and DC – Measures DC, AC, pulsed, and mixed currents. Simplify your selection and reduce inventory with a single solution for diverse measurement needs.

5000V high isolation – safety assured – Up to 5000V electrical isolation between primary and secondary circuits, combined with a UL 94-V0 flame-retardant plastic case, provides solid safety protection for high-voltage industrial environments.

Low power, easy installation, high cost-performance – Maximum supply current of only 20 mA reduces the load on your power supply. Compact dimensions simplify panel layout. As an open-loop Hall sensor, it offers excellent cost-performance compared to closed-loop solutions while meeting demanding high-current measurement requirements.

HAX1500-S Typical Applications

The HAX1500-S is suitable for a wide range of high-current industrial applications, including:

Motor drives & control – AC variable-frequency drives, servo motor drives, DC motor static converters. Monitor motor operating current in real time for precise control and effective overload prevention.

UPS and switching power supplies – Real-time input/output current monitoring to ensure stable operation and early detection of abnormal fluctuations.

Battery-powered systems – Accurately monitor battery charge/discharge currents, providing critical data to the battery management system (BMS).

Welding equipment power supplies – Real-time welding current monitoring to ensure consistent weld quality.

Renewable energy – Photovoltaic inverter current monitoring, wind power converter control. Precisely measure DC side current to help maximize green energy conversion efficiency.

Industrial automation – Production line robots, automated test systems. Enable accurate closed-loop current control and improve equipment stability.