HLSR50-P High-Accuracy Hall-Effect Current Sensor | 50A Open-Loop Bidirectional Measurement, 400kHz Bandwidth, 2.5µs Response Time

—— The ideal choice for industrial current sensing

In the world of current measurement, accuracy, speed and reliability are always the ultimate goals. The HLSR50-P open-loop Hall-effect current sensor from LEM, a global leader in current sensing, is designed exactly for these demanding requirements. With a rated 50A current sensing capability and a wide measurement range of ±125A, it perfectly covers everything from normal operating currents to transient peaks.

HLSR50-P Key Specifications

HLSR50-P Key Technical Advantages

High Accuracy & Linearity

The HLSR50-P maintains ±1% accuracy and ±0.5% linearity over the full measurement range. Whether measuring DC signals or high-frequency AC components, it delivers stable and reliable output.

Fast Response to Capture Transient Changes

With a typical response time of 2.5µs and a bandwidth of 400kHz, the sensor responds almost instantly to current transients – ideal for real-time applications such as servo drives and switch-mode power supplies.

Electrical Isolation for Safety

A 4.3kVrms isolation voltage between primary and secondary circuits protects downstream control electronics from high-voltage disturbances and surges, greatly improving system safety and reliability.

Wide Temperature Range for Harsh Environments

An operating range of -40°C to +105°C ensures stable and accurate current measurement whether you are working in freezing outdoor conditions or inside hot equipment enclosures.

Compact Design for Easy Integration

The modular design has a height of only 12mm and a small footprint. It is designed for through-hole PCB mounting, factory-calibrated, and ready to use – significantly reducing development and integration effort.

Low Power Consumption & SingleSupply Operation

The sensor runs on a single +5V supply with a maximum supply current of just 25mA. This low-power characteristic makes it particularly suitable for battery-powered and portable devices, helping extend system runtime.

HLSR50-P Applications

The HLSR50-P is widely used in the following industrial and power electronics applications:

AC variable speed drives and servo motor drives

Static converters for DC motor drives

Uninterruptible power supplies (UPS) and switch-mode power supplies (SMPS)

Welding power supplies

Battery-powered applications

String boxes and MPPT (Maximum Power Point Tracking)

Industrial automation control systems

Renewable energy systems (solar, energy storage, etc.)

Whether you are in traditional industrial automation or expanding into the new energy sector, the HLSR50-P provides accurate and reliable current measurement for your solutions.

Why Choose HLSR50-P?

Brand you can trust – LEM is a global leader in current sensing, with products proven in thousands of applications
Outstanding performance – ±1% accuracy, 2.5µs response time, 400kHz bandwidth – leading the class
Safety and reliability – 4.3kVrms isolation, wide temperature range for long-term stable operation
Easy to integrate – Compact size, through-hole mounting, factory-calibrated – shortens R&D and production cycles
Broad application coverage – Motor drives, power supplies, renewable energy, industrial automation – and more