HLSR 40-P

Current Sensors Overview

The HLSR 40-P is a board-mount current transducer from LEM USA Inc. designed for accurate electronic measurement of DC, AC, and pulse currents while maintaining galvanic isolation between primary and secondary circuits. It utilizes open-loop Hall effect technology with a voltage output. Key electrical parameters include a nominal primary current of 40 A RMS, a measuring range up to 2.5 times the nominal current (-100 A to 100 A), and an accuracy of 1%. The sensor features a response time of 2.5 µs, a frequency range of 400 kHz, and operates on a single +5 V supply (4.5 V to 5.5 V). It offers low offset drift and a compact footprint.

Current Sensors Feature Summary

• Open-loop Hall effect technology providing galvanic separation between primary and secondary circuits
• Voltage output compatible with +5V single supply operation
• Compact design optimized for through-hole PCB mounting with extremely low profile
• Factory calibrated for high precision and reliability across industrial applications

Current Sensors Applications

• AC variable speed drives
• Servo motor drives
• Static converters for DC motor drives
• Uninterruptible Power Supplies (UPS)
• Switched Mode Power Supplies (SMPS)

Current Sensors Procurement Notes

Verify that the specific part number matches the required through-hole mounting configuration, as the HLSR series also includes surface-mount variants. Confirm that the operating environment temperature falls within the specified -40 C to +105 C range. Ensure the system power supply strictly adheres to the 4.5 V to 5.5 V limits to prevent damage. Check for compliance with relevant safety standards such as IEC 61010-1 if required for the final application.

Current Sensors Selection Notes

Select this component when precise measurement of DC, AC, or pulse currents is required in space-constrained designs. The 40 A RMS rating suits applications where the peak current does not exceed the extended measuring range. Consider the 2.5 µs response time for high-frequency applications up to 400 kHz. The open-loop architecture offers a cost-effective solution compared to closed-loop alternatives while maintaining sufficient accuracy for general industrial control.

Current Sensors Part Context

The HLSR 40-P belongs to the HLSR-P series of current transducers manufactured by LEM USA Inc. This series is characterized by its use of open-loop Hall effect sensors, which provide reliable performance in various industrial environments. The P suffix indicates a through-hole mounting package, distinguishing it from the surface-mount SM variant. The series is designed to offer low power consumption and high bandwidth with very low-loss magnetic cores.

Current Sensors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. For equivalent specifications, consider other models within the HLSR series, such as HLSR 50-P for higher current ratings, or HLSR 32-P for lower requirements. Surface-mount equivalents may be found in the HLSR-SM series, though mechanical integration will differ.