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Hot Products

AP 200 B420L , AP200B420L

Second. Nominal Signal[DC RMS:Current 4-20mA]
  • MacroQuest Part#AP 200 B420L
  • ManufacturerLEM
  • Standard Lead TimeNA
  • Part StatusActive
    • $117.42 - $125.46
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    Description FAQ Review
    Description

    LEM AP 200 B420L Split-Core AC Current Transducer

    LEM AP 200 B420L Product Overview

    The AP 200 B420L is a split-core AC current transducer from LEM's AP-B420L series, designed for the electronic measurement of AC sinusoidal waveform currents with galvanic isolation between the primary and secondary circuits . The B420L variant features switch selectable measuring ranges (100A, 150A, 200A) and a loop-powered 4-20mA current output for direct integration with industrial control systems . Built on LEM's proprietary PRiME air-core technology, it delivers RMS output for sinusoidal currents .

    Rated for 200 A nominal with selectable 100A/150A/200A measuring ranges, it outputs 4-20mA with ±1% accuracy and ±0.5% linearity . Bandwidth is 30Hz to 2kHz and response time is <150ms . Supply voltage is 12-24V DC (loop-powered) . Mass is 90g and operating temperature is -20°C to +60°C . Insulation test voltage is 5kV, and the aperture accommodates cables up to 18mm diameter .

     

    LEM AP 200 B420L Key Specifications

    Parameter

    Value

    Rated current (IPN)

    100A, 150A, 200A (Selectable)

    Measuring range

    Switch selectable (100/150/200A)

    Output signal

    4-20mA DC (Loop-powered)

    Accuracy (XG)

    ±1 %

    Linearity (EL)

    ±0.5 %

    Response time (tr)

    <150 ms

    Bandwidth (BW)

    30 Hz ~ 2 kHz

    Supply voltage (UC)

    12-24V DC (Loop-powered)

    Insulation (Vd)

    5 kV

    Aperture

    18 mm

    Operating temp (TA)

    -20°C to +60°C

    Mass (m)

    90 g

    Mounting

    DIN rail or Panel mount

     

    LEM AP 200 B420L Key Advantages

    The AP 200 B420L employs LEM's PRiME air-core technology, delivering ±1% accuracy with ±0.5% linearity, no saturation, and no insertion loss . The RMS output ensures accurate measurement of sinusoidal AC currents. The split-core design enables quick and easy installation on existing cables without system interruption . The loop-powered 4-20mA current output simplifies wiring and reduces installation costs for industrial control systems . The UL 94-V0 case provides flame-retardant protection and 5kV isolation ensures safety in industrial environments . The AP series provides RMS output for sinusoidal currents, distinguishing it from the APR series which provides true RMS for non-sinusoidal or noisy waveforms.

     

    LEM AP 200 B420L Typical Applications

    VFD Controlled Loads (motor and load monitoring)
    SCR Controlled Loads (phase angle and burst fired SCR measurement)
    Switching Power Supplies and Electronic Ballasts
    Automation systems and data loggers
    Smart grid and energy efficiency monitoring
    Power management and panel meters

     

    Why Choose the LEM AP 200 B420L?

    The AP 200 B420L combines ±1% accuracy, switch selectable ranges 100A/150A/200A, loop-powered 4-20mA output, split-core design, and 5kV insulation in a compact DIN-rail/panel-mount package weighing only 90g . Manufactured by LEM, it delivers stable, accurate, and safe AC current measurement for energy and automation applications . The B420L variant offers 4-20mA current output for seamless integration with PLCs, DCS, and SCADA systems. The part is Active and available through authorized distributors with a standard lead time of 10-14 weeks .

     

    FAQ
    Q
    What is the advantage of MacroQuest?
    A
    Our advantage is that we not only low prices, but we more suited to you.
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    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.
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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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    Mar 21, 2026
    Everyone is professional and friendly.
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    Jan 04, 2026
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    Jul 18, 2025
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    Feb 22, 2024
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