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Hot Products

HAH1DR300-S/SP1,HAH1DR 300-S/SP1

HOT OFFER// Authorized Distributor
  • MacroQuest Part#HAH1DR300-S/SP1
  • ManufacturerLEM
  • Standard Lead TimeNA
  • Part StatusActive
    • $21.36 - $36.86
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    100-219 Pieces $32.85
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    Description FAQ Review
    Description

    LEM HAH1DR 300-S/SP1 Open-Loop Hall Effect Current Sensor

     

    LEM HAH1DR 300-S/SP1 Product Overview

    The HAH1DR 300-S/SP1 is a high-precision current sensor from LEM's HAH1DR series, based on open-loop Hall effect technology. It is designed for electronic measurement of DC, AC, and pulsed currents, with galvanic isolation between the primary and secondary circuits.

    This model has a rated current of 300A and a measuring range of ±300A. It outputs a ratiometric voltage signal with a secondary nominal signal of 2V and a high accuracy of 1% (significantly better than the standard series version's 3%). Bandwidth is 0~30kHz, response time is ≤6µs, supply voltage is 5V DC (unipolar), and operating temperature range is -40°C to +125°C.

    The busbar mounting (baseplate mount) design is suitable for automotive motor control, battery management systems, precision power supplies, and more. The HAH1DR series offers measurement ranges from 200A to 900A in the same package, enabling flexible platform-based selection.

     

    LEM HAH1DR 300-S/SP1 Key Technical Specifications

    Parameter

    Specification

    Model

    HAH1DR 300-S/SP1

    Series

    HAH1DR

    Rated Current (I_PN)

    300 A

    Measuring Range (I_PM)

    ±300 A

    Secondary Nominal Signal

    2 V

    Measurement Technology

    Open-loop Hall Effect

    Accuracy

    1 %

    Frequency Bandwidth

    0 ~ 30 kHz

    Response Time

    ≤ 6 µs

    Supply Voltage

    4.75V ~ 5.25V (typical 5V, unipolar)

    Supply Current (Max)

    20 mA

    Linearity

    ±1 %

    Operating Temperature

    -40℃ ~ +125℃

    Mounting Type

    Busbar Mounting / Baseplate Mount

    Output Type

    Ratiometric voltage output

    Application

    Automotive Motor Control, Battery Management Systems, Precision Power Control

    Certifications

    CE, UL, RoHS

    Part Status

    Active

     

    LEM HAH1DR 300-S/SP1 Key Advantages

    1% High Accuracy, Far Exceeding Series Standard: The HAH1DR 300-S/SP1 achieves 1% accuracy, while the standard series version is only 3% — a significant improvement, ideal for applications with strict accuracy requirements

    Open-Loop Hall Technology, Non-Contact Measurement: No insertion loss, fast response (≤6µs), suitable for automotive dynamic current monitoring

    300A Rated Current: Rated 300A, measuring range ±300A — meets small-to-medium power motor control and precision power management needs

    -40°C to +125°C Ultra-Wide Operating Temperature: Automotive-grade wide temperature design, adapts to extreme environmental temperature variations

    Single +5V Supply: Seamlessly interfaces with automotive onboard power systems, simplifying vehicle electrical integration

    Ultra-Low Thermal Drift: Optimized core materials and circuit design ensure stable measurement accuracy across the full temperature range

    Fully Ratiometric Output: Output voltage precisely replicates the primary current variation profile

     

    Why Choose the HAH1DR 300-S/SP1?

    Customer Pain Point

    HAH1DR 300-S/SP1 Solution

    Need high-precision current measurement (e.g., precision power control)

    1% high accuracy — far exceeds standard series 3%

    Wide temperature variations in automotive environments cause accuracy drift

    -40°C~+125°C wide temperature design, ultra-low thermal drift

    Limited installation space

    Compact package, fits tight installation spaces

    Need fast response overcurrent protection

    ≤6µs fast response, timely protection triggering

    Same platform needs different current ratings

    Series covers 200A-900A, same package

     

    LEM HAH1DR 300-S/SP1 Target Applications

    Automotive Motor Control: EV traction motor current monitoring

    Automotive Battery Management Systems (BMS): Power battery charge/discharge current monitoring

    Precision Power Control: High-precision power supply output current monitoring

    Inverter Systems: Real-time current monitoring, ensuring stable equipment operation

    Renewable Energy Systems: PV inverters, wind turbine current monitoring

     

    FAQ
    Q
    What is the advantage of MacroQuest?
    A
    Our advantage is that we not only low prices, but we more suited to you.
    Our Keywords is
    New and original parts
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    Q: I want to work with MacroQuest because of high quality. But I found your price too high and out of line with the prevailing market level, how should I do?
    A: MacroQuest has been devoted to offer a best price to our customers,if you want to buy it at a cheapper price. Please contact us directly to see if we can negotiate  a cheaper price rate. Or, send us an email with your T/P.
    Simon Hsu
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    Q：Are all the parts new and original?
    -A:Yes, all parts are new and original checked by our quality control department.

    Q：How long is your warranty?
    -A:We offer a 1 year warranty for form fit and function for MacroQuest stock. 


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    Less
    Review
    Bailee
    Apr 23, 2026
    Good and reliable, several deals over many years without any problem.
    Tegan
    Apr 19, 2026
    always good quality! I ordered more than 5 time, and they all perfect!
    Edwige
    Mar 13, 2026
    The quality of this product is very good, the packaging is perfect.
    Ulysses
    Dec 13, 2025
    good customer and supplier, good to work with
    Saige
    Dec 03, 2025
    Easy to deal with, thanks.
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