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Hot Products

AKR 750 C420L J , AKR750C420LJ

Second. Nominal Signal[DC TRMS:Current 4-20mA]
  • MacroQuest Part#AKR 750 C420L J
  • ManufacturerLEM
  • Standard Lead TimeNA
  • Part StatusActive
    • $471.42 - $557.15
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    10-99 Pieces $514.28
    >=100 Pieces $471.42
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    Description FAQ Review
    Description

    LEM AKR 750 C420L J True RMS Solid-Core AC Current Transducer

    LEM AKR 750 C420L J Product Overview

    The AKR 750 C420L J is a solid-core AC current transducer from LEM's AKR series, designed for the electronic measurement of AC currents with complex waveforms (including distorted VFD and SCR outputs) and galvanic isolation between primary and secondary circuits. The J variant features a solid-core design with a large 76 mm aperture, jumper selectable measuring ranges (375A, 500A, 750A), and a loop-powered 4-20mA True RMS current output.

    Rated for 750 A nominal with selectable 375A/500A/750A measuring ranges, it outputs 4-20mA with ±1% accuracy. Bandwidth is 10Hz to 400Hz and response time is 600ms. Supply voltage is 24V DC (loop-powered). Mass is 450g and operating temperature is -20°C to +50°C. Insulation test voltage is 600V AC (CAT III, PD2).

     

    LEM AKR 750 C420L J Key Specifications

    Parameter

    Value

    Rated current (IPN)

    375A, 500A, 750A (Selectable)

    Measuring range

    Jumper selectable (375/500/750A)

    Output signal

    4-20mA DC (Loop-powered, True RMS)

    Accuracy (XG)

    ±1 %

    Response time (tr)

    600 ms

    Bandwidth (BW)

    10 ~ 400 Hz

    Supply voltage (UC)

    24V DC (Loop-powered)

    Isolation (Vd)

    600V AC (CAT III, PD2)

    Aperture

    76 mm

    Operating temp (TA)

    -20°C to +50°C

    Mass (m)

    450 g

    Mounting

    Panel mount (2 x Ø4.5mm holes)

     

    LEM AKR 750 C420L J Key Advantages

    The AKR 750 C420L J employs True RMS responding technology, delivering ±1% accuracy on distorted VFD and SCR waveforms where conventional average-responding sensors fail. True RMS integrates the actual waveform over time—the only way to accurately measure non-sinusoidal AC currents. The large 76 mm aperture accommodates oversized cables and busbars, and the high isolation ensures safety in industrial environments. The loop-powered 4-20mA output simplifies wiring and reduces installation costs, while jumper-selectable ranges provide flexibility without hardware changes. The solid-core design delivers precision measurement with no insertion losses.

     

    LEM AKR 750 C420L J Typical Applications

    VFD-controlled loads (motor and load monitoring from VFD output)
    SCR-controlled loads (phase-fired and burst-fired systems)
    Large pumps (dry-run detection via current monitoring)
    Power generation systems (generator output measurement)
    Electric heating elements (fast load monitoring)
    Automation systems, data loggers, and panel meters

     

    Why Choose the LEM AKR 750 C420L J?

    The AKR 750 C420L J combines True RMS accuracy, jumper-selectable ranges 375A/500A/750A, loop-powered 4-20mA output, and 76 mm aperture in a robust panel-mount package weighing 450g. Manufactured by LEM, it delivers stable, accurate, and safe AC current measurement for VFD, SCR, and other non-linear loads. The J variant is distinguished by its jumper-selectable ranges and True RMS capability, designed for applications where waveform distortion is present. The part is Active and complies with IEC 61010-1 safety and EN 61326 EMC standards.

     

    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
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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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    Less
    Review
    Cydney
    Feb 06, 2026
    Amazing product.
    Fabrizio
    Oct 25, 2025
    Great supplier. We have done several orders and all come in prisitine condition as stated.
    Hannah
    Jun 11, 2025
    Highly recommended
    Abigail
    Apr 17, 2025
    Recommend a friend
    Sela
    Nov 28, 2022
    Good supplier,happy to cooperate
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