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Hot Products

LAH 50-P/SP1 , LAH50-P/SP1

HOT OFFER// Authorized Distributor
  • MacroQuest Part#LAH 50-P/SP1
  • ManufacturerLEM
  • Standard Lead TimeNA
  • Part StatusActive
    • $16.74 - $41.85
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    10-99 Pieces $28.57
    100-299 Pieces $22.85
    300-999 Pieces $18.65
    >=1000 Pieces $16.74
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    Description FAQ Review
    Description

    LEM LAH 50-P/SP1 LAH Series Closed-Loop Current Transducer


    50A Rated Current x ±90A Measuring Range — High-Accuracy PCB-Mount Sensor for Industrial Power Conversion

     

    LEM LAH 50-P/SP1 Product Overview

    The LAH 50-P/SP1 is a closed-loop Hall effect current transducer from LEM's LAH series, designed for the electronic measurement of DC, AC, and pulsed currents with galvanic isolation between the primary and secondary circuits . This compact PCB-mount sensor features an integrated primary conductor and is designed for printed circuit board mounting with an insulating plastic case recognized according to UL 94-V0 . The LAH series offers excellent accuracy, good response time, and high immunity to external interference .

    Rated for 50 A nominal with a ±90 A measuring range, it outputs a secondary current of 50 mA (instantaneous) with 0.25% accuracy and <0.15% linearity . The conversion ratio is 1:1000 . Response time is <500 ns and bandwidth is DC to 200 kHz . Supply voltage range is ±12 V to ±15 V (±5%) . Mass is 22 g and operating temperature is -25°C to +85°C . Insulation test voltage is 5 kV with impulse withstand voltage of 12 kV, creepage distance of 11.75 mm, and clearance of 11.75 mm, providing reinforced isolation up to 500 V according to EN 50178 and IEC 61010-1 standards .

     

    LEM LAH 50-P/SP1 Key Specifications

    Parameter

    Value

    Rated current (IPN)

    50 A

    Measuring range (IPM)

    0 … ±90 A

    Output signal (ISN)

    50 mA (instantaneous)

    Turns ratio

    1 : 1000

    Supply voltage (VC)

    ±12 … ±15 V (±5%)

    Accuracy (XG)

    ±0.25%

    Linearity (EL)

    <0.15%

    Response time (tr)

    <500 ns

    Bandwidth (BW)

    DC … 200 kHz

    Insulation test voltage (Vd)

    5 kV

    Impulse withstand voltage (ÛW)

    12 kV

    Creepage distance (dCp)

    11.75 mm

    Clearance (dCl)

    11.75 mm

    Operating temp (TA)

    -25°C … +85°C

    Mass (m)

    22 g

    Mounting

    PCB

     

    LEM LAH 50-P/SP1 Key Advantages

    The LAH 50-P/SP1 employs closed-loop Hall effect technology, delivering 0.25% accuracy and <0.15% linearity while maintaining excellent performance with low temperature drift and high immunity to external interference . The ±90 A range provides ample headroom for measuring nominal currents up to 50 A with transient overcurrent capability, while the <500 ns response time and 200 kHz bandwidth capture fast-changing switching and pulse waveforms with high fidelity . The PCB-mount design with integrated primary conductor simplifies board-level integration, and the compact form factor saves valuable board space . The 5 kV insulation and 12 kV impulse withstand voltage ensure robust safety isolation for demanding industrial applications .

     

    Why Choose the LEM LAH 50-P/SP1?

    The LAH 50-P/SP1 combines a 50 A nominal rating with a ±90 A measuring range and 0.25% accuracy in a compact, PCB-mount package. Manufactured by LEM, it delivers stable, accurate, and safe current measurement for demanding industrial power conversion and motor control applications. The closed-loop Hall effect design offers excellent accuracy, very good linearity, low thermal drift, and high immunity to external interference, making it a reliable choice for critical systems where measurement integrity is paramount . The LAH series is specifically designed for PCB mounting with integrated primary conductors, ensuring seamless integration into power electronic systems .

     

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

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    A: Yes we can. Please contact with your sales manager for more information.

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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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    Queenie
    Apr 26, 2026
    Highly recommended
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    Feb 15, 2026
    Very helpful service
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    May 23, 2025
    Reliable company & parts
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    Oct 25, 2024
    They work tirelessly to provide prompt solutions that exceed expectations.
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    Aug 27, 2023
    This is a professional company, so kindly person, hope more bisiness with them!!!
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