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Hot Products

HAH1DRW900-S,HAH1DRW 900-S

HOT OFFER// Authorized Distributor
  • MacroQuest Part#HAH1DRW900-S
  • ManufacturerLEM
  • Standard Lead TimeNA
  • Part StatusActive
    • $21.36 - $36.86
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    Description FAQ Review
    Description

    LEM HAH1DRW 900-S Open-Loop Hall Effect Current Sensor

     

    LEM HAH1DRW 900-S Product Overview

    The HAH1DRW 900-S is a high-precision current sensor from LEM's HAH1DRW 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 features redundant/dual range capability, providing high-range and low-range independent outputs, making it particularly suitable for applications with high safety and reliability requirements such as automotive high-power motor control.

    The sensor features busbar mounting design, with a rated current of 900A and a measuring range of ±900A. It outputs a ratiometric voltage signal with a sensitivity of 2.2mV/A, an operating temperature range of -40°C to +125°C, an accuracy of ±3.25%, and a linearity of ±1%. Bandwidth is DC~40kHz, response time is 6µs, and it operates on a single +5V supply.

    The HAH1DRW series is a version of the HAH1DR series with additional protective coating on the PCB and metal inserts in the housing for enhanced structural strength. The series offers multiple range options suitable for automotive motor control and industrial drive applications.

     

    LEM HAH1DRW 900-S Key Technical Specifications

    Parameter

    Specification

    Model

    HAH1DRW 900-S

    Series

    HAH1DRW

    Rated Current (I_PN)

    900 A

    Measuring Range (I_PM)

    ±900 A

    Output Signal

    Ratiometric voltage output (2.5V ± 2V)

    Sensitivity

    2.2 mV/A

    Output Type

    Redundant/Dual range (high/low range dual outputs)

    Measurement Technology

    Open-loop Hall Effect

    Accuracy

    ±3.25 %

    Linearity

    ±1 %

    Frequency Bandwidth

    DC ~ 40 kHz

    Response Time

    6 µs

    Supply Voltage (Vcc)

    4.75V ~ 5.25V (typical 5V)

    Supply Current (Max)

    25 mA

    Polarization

    Unidirectional

    Mounting Type

    Busbar Mounting

    Operating Temperature

    -40℃ ~ +125℃

    Series Features

    Protective coating + Metal inserts

    RoHS

    Compliant

    Part Status

    Active

     

    LEM HAH1DRW 900-S Key Advantages

    Redundant/Dual Range Output, High Safety: Built-in high-range and low-range independent outputs provide redundant measurement capability, ideal for automotive safety-critical motor control systems

    900A Ultra-High Current Measurement Capability: Rated 900A, measuring range ±900A — meets high-current monitoring needs for electric vehicle high-power motor control

    -40°C to +125°C Ultra-Wide Operating Temperature: Automotive-grade wide temperature design, adapts to extreme environmental temperature variations, ensuring stable operation under harsh conditions

    Compact Busbar Mounting Design: Optimized for direct copper bar installation, easy to integrate into inverters and motor controllers

    Single +5V Supply: Simplifies automotive power system design, compatible with mainstream automotive electronics platforms

    Open-Loop Hall Technology, High Cost-Effectiveness: Non-contact measurement, no insertion loss, fast response (6µs), suitable for dynamic current monitoring

    40kHz Bandwidth: Effectively captures high-frequency current components in automotive systems

    Series Selection: HAH1DRW series covers multiple ranges from 100A to 1000A in the same package design, flexible expansion based on application needs

    Enhanced Structural Design: PCB protective coating + metal inserts in housing — improved durability and reliability in harsh environments

     

    Why Choose the HAH1DRW 900-S?

    Customer Pain Point

    HAH1DRW 900-S Solution

    Automotive motor control requires redundant current measurement for safety

    Dual range/redundant output — two independent signals as backup

    Need high cost-effective high-current monitoring solution

    Open-loop Hall technology, 900A range, clear cost advantage

    Wide temperature variations in automotive environments cause accuracy drift

    -40°C~+125°C wide temperature design, automotive-grade reliability

    Limited installation space

    Busbar mounting design, compact structure

    High durability requirements in harsh environments

    Protective coating + metal inserts — enhanced structural strength

    Need fast response overcurrent protection

    6µs fast response, timely protection triggering

     

    LEM HAH1DRW 900-S Target Applications

    Automotive Motor Control: EV traction motor current monitoring

    Industrial VFDs: High-power motor drive current feedback control

    Renewable Energy Systems: PV inverters, energy storage systems

    UPS Power Supplies: High-power uninterruptible power supply input/output monitoring

    EV Charging Stations: Electric vehicle charging 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
    Fast Delivery
    Instock & available
    Short Leadtime
    30-Days returns
    ISO9001 Certification
    1 Year Warranty 

    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
    simon@mymacroquest.com
    Alice Wang
    alice@mymacroquest.com

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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
    Felicia
    Feb 02, 2026
    Good quality, great product
    Quentin
    Dec 20, 2025
    Very good quality. It's well packed. Very good and fast service. Very satisfied.
    Zola
    Nov 29, 2025
    The delivery speed is fast, the quality is good and the price is low.
    Vesna
    Nov 16, 2025
    Nice to work with you.
    Una
    Sep 02, 2025
    Always answer questions, and reply quickly
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