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Hot Products

ARU-B100-D175/SP4 , ARU-B100-D175/SP4

Second. Nominal Signal[Instantaneous:Voltage V]
  • MacroQuest Part#ARU-B100-D175/SP4
  • ManufacturerLEM
  • Standard Lead TimeNA
  • Part StatusActive
    • $354.07
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    Description FAQ Review
    Description

    LEM ARU-B100-D175/SP4 ARU Series Flexible Rogowski Coil Current Sensor

    LEM ARU-B100-D175/SP4 Product Overview

    The ARU-B100-D175/SP4 is a flexible split-core Rogowski coil current sensor from LEM's ARU Series, designed for the electronic measurement of AC currents with galvanic separation between the primary and secondary circuits . This outdoor-rated transducer features a 175 mm aperture and comes with a 4.5 m output cable .

    Rated for 1000 A nominal, it outputs a voltage signal of 100 mV/kA at 50 Hz with Class 0.5 accuracy according to IEC 61869-10 and IEC 61869-6 standards . Bandwidth is 50/60 Hz. Supply is self-powered and operating temperature ranges from -40°C to +80°C . Rated insulation voltage is 1 kV CATIII . The sensor is IP68 rated and resistant to UV, water, dust, and ice for outdoor installations .

     

    LEM ARU-B100-D175/SP4 Key Specifications

    Parameter

    Value

    Rated current (IPN)

    1000 A 

    Measuring range

    1 to 300000 A RMS 

    Output signal

    Voltage (100 mV/kA @ 50 Hz) 

    Supply voltage (VC)

    Self-powered 

    Accuracy

    Class 0.5 (IEC 61869-10) 

    Bandwidth (BW)

    50/60 Hz 

    Insulation (Vd)

    1 kV CATIII 

    Aperture

    175 mm 

    Output cable length

    4.5 m 

    Operating temp (TA)

    -40°C to +80°C 

    Protection rating

    IP68 

    Mounting

    Flexible split-core (clip-on) 

    Technology

    Rogowski coil 

     

    LEM ARU-B100-D175/SP4 Key Advantages

    The ARU-B100-D175/SP4 employs Rogowski coil technology with patented Perfect Loop Technology, significantly reducing errors due to primary conductor position within the aperture and proximity of external conductors . The Class 0.5 accuracy according to IEC 61869-10 ensures reliable measurement without requiring additional calibration components . The flexible split-core design enables fast clip-on installation without disconnecting existing cables. The 175 mm aperture accommodates large conductors, while the internal shield provides enhanced measurement accuracy at low primary currents . The IP68 rating and UV, water, dust, and ice resistance make it suitable for harsh outdoor environments . The self-powered operation simplifies installation, and the robust Twist and Click closure ensures secure mounting .

     

    LEM ARU-B100-D175/SP4 Typical Applications

    Distribution Automation for Fault Detection
    Isolation and Restoration
    Grid Monitoring (e.g. Intelligent Substations)
    Protection and Safety
    Distribution Transformer Monitoring
    Distribution Automation for Voltage Control and Power Quality
    Outdoor substations and underground substations
    Pole-mounted transformers and overhead lines

     

    Why Choose the LEM ARU-B100-D175/SP4?

    The ARU-B100-D175/SP4 combines 1000 A rated current with Class 0.5 accuracy in a flexible, outdoor-rated Rogowski coil package. Manufactured by LEM, it delivers stable, accurate, and safe AC current measurement for smart grid and industrial applications. The split-core design offers easy installation without system interruption, while the IP68 protection ensures reliable performance in extreme environments. The 175 mm aperture with 4.5 m output cable provides flexibility for various installation scenarios.

     

    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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    Nieves
    Feb 23, 2026
    It's definitely worth it.
    Oksana
    Jan 29, 2026
    always good quality! I ordered more than 5 time, and they all perfect!
    Precious
    Dec 05, 2025
    Reliable company to work with! Thank you!
    Patia
    Sep 23, 2025
    Great company ! Very professional and parts always come new & original. Special thanks to Elsa !
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    Nov 12, 2024
    Thanks very much
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