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Hot Products

AT5B5, AT 5 B5

HOT OFFER// Authorized Distributor
  • MacroQuest Part#AT 5 B5
  • ManufacturerLEM
  • Standard Lead TimeNA
  • Part StatusActive
    • $50.88 - $75.46
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    100-239 Pieces $62.89
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    Description FAQ Review
    Description

    AT5B5 High-Accuracy Split-Core AC Current Transducer – Inject Precision and Reliability into Your Automation System

     

    AT5B5 Product Overview

    The AT5B5 is a high-accuracy split-core AC current transducer meticulously developed by LEM, a world leader in electrical measurement technology, as part of the AT-B5 series. This series is designed for electronic measurement of AC waveform currents, featuring excellent galvanic isolation between the primary and secondary circuits. It is widely used in industrial automation, process control, equipment monitoring, and smart power distribution.

    The AT5B5 converts the primary AC current into a 0–5 V DC output proportional to the true RMS value, enabling direct connection to distributed PLCs, SCADA systems, remote terminal units, or data acquisition modules. It plays a key role in automated monitoring, safety alarms, and predictive maintenance.


    AT5B5 Key Advantages

    1. Split-Core Design for Easy Installation

    The AT5B5 features a split-core structure with a ⌀ 16 mm sensing aperture. Installation is possible without interrupting the existing cable. The housing design supports cable tie fixing, making field deployment extremely convenient.

    2. High Accuracy and Linearity

    Parameter

    Specification

    Measurement Accuracy

    ±1.5% (@IPN, TA = 25°C)

    Linearity Error

    ±0.5% Max

    Number of Channels

    1 channel

    Measuring Range

    0A to 5A AC

    The AT5B5 maintains high accuracy and excellent linearity over its entire operating range, providing reliable measurement data for system monitoring.

    3. Self-Powered & Wide Temperature Operation

    The transducer uses self-powered technology, requiring no external power supply. This not only simplifies system wiring but also reduces overall cost.

    Operating Temperature: -20°C ~ +60°C, suitable for environments ranging from cold factories to warm control cabinets.

    Storage Temperature: -20°C ~ +85°C.

    4. Fast Response

    Response Time: ≤ 300 ms (to 90% of the input current).

    Frequency Response: 50/60Hz, perfectly matching power frequency grid measurement needs.

    5. Safety Compliance & Environmental Standards

    UL 94-V0 flame-retardant plastic housing.

    Ingress Protection IP40, dust-proof design suitable for installation inside industrial cabinets.

    RoHS compliant – leadfree and environmentally friendly.

    REACH unaffected – meets international environmental regulations.

    ECCN: EAR99 – simple export control classification, convenient for international procurement.


    AT5B5 Technical Specifications Summary

    Parameter

    Value

    Brand / Model

    LEM AT5B5

    Series

    AT-B5 Series

    Product Status

    Active (In production)

    Measurement Type

    AC current

    Rated Current (IPN)

    5 A RMS

    Output Type

    Ratiometric voltage, 0–5 V DC

    Accuracy

    ±1.5%

    Linearity

    ±0.5%

    Frequency Response

    50/60Hz

    Response Time

    ≤ 300 ms

    Operating Temperature

    -20°C ~ +60°C

    Storage Temperature

    -20°C ~ +85°C

    Dimensions (W×H)

    44.5 mm × 67 mm

    Overall Thickness

    36.5 mm

    Aperture Diameter

    ⌀ 16 mm

    Weight

    Approx. 90 g

    Country of Origin

    South Korea

    Housing Flammability Rating

    UL 94-V0

    Environmental Compliance

    RoHS Compliant / REACH Unaffected


    AT5B5 Typical Applications

    The AT5B5 has been proven by many industrial customers as a key component in automation and energy management systems, suitable for:

    Industrial Automation & Process Control

    Real-time current monitoring via distributed PLCs or SCADA software, providing accurate data for process adjustments.

    Equipment Safety & Condition Monitoring

    Load monitoring for conveyors, pumps, HVAC motors, etc., enabling protection system activation and predictive maintenance to avoid unexpected downtime.

    Energy Management & Smart Power Distribution

    Leveraging LEM’s extensive experience in new energy applications (PV inverters, energy storage systems, EV chargers), the AT5B5 is an ideal choice for green energy monitoring solutions.
    Automation & Smart Grids

    The AT-B5 series is specifically designed for smart grid and automation applications, representing a standardized solution for distributed current measurement.

     

    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

    Q: Can MacroQuest offer NET terms?
    A: Yes we can. Please contact with your sales manager for more information.

    Q: How to Request a Quote?
    -A:You have three ways to request a quote:
    1.Choose an item using a search box or browsing through product categories.Click on "Request Quote" button on the Product page.
    2.Click here for feedback on our web.
    3.If you have a BOM list or want to email us directly, please contact:
    Simon Hsu
    simon@mymacroquest.com
    Alice Wang
    alice@mymacroquest.com

    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. 


    Q:  Can I use Credit Card/Debit Card payment for my orders on your website?
    -A:Yes, you can. you can pay on our company via Credit Card/Debit Card（Mastercard, Discover, Visa, American EXpress, Diners).

    Please select the first payment method-Paypal, then you will see Credit Card/Debit Card payment button in the lower right corner.



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    The on-line orders system within the MacroQuest’s service works at real time, thanks to which it is immediately (at the moment of placing the order) possible to make a reservation for the selected product in the warehouse what it will be automatically noted in the on-line service.
    If you order a product, it will be reserved for you.
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    Return Policy
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    Felicia
    Apr 04, 2026
    Good trading process
    Alison
    Feb 02, 2026
    Fast Shipping & As Described ... Thank You
    Brian
    Nov 12, 2025
    The delivery speed is very fast.
    Cholena
    Nov 01, 2025
    We do business with them regularly, always a pleasure working with Simon.
    Tessie
    Oct 30, 2025
    A class act
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