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Hot Products

CKSR 15-NP , CKSR15-NP

Second. Nominal Signal[Instantaneous:Voltage 2.5 +/- 0.625 V]
  • MacroQuest Part#CKSR 15-NP
  • ManufacturerLEM
  • Standard Lead TimeNA
  • Part StatusActive
    • $4.28 - $5.26
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    100-999 Pieces $4.78
    >=1000 Pieces $4.28
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    Description FAQ Review
    Description

    CKSR 15-NP – High-Accuracy Closed-Loop Flux Gate Current Transducer

     

    CKSR 15-NP Product Overview

    The CKSR 15-NP is a high-precision closed-loop flux gate current transducer from LEM, a world leader in electrical measurement. It uses advanced Flux Gate closed-loop compensation technology and is designed for high-accuracy isolated measurement of DC, AC, and pulsed currents up to 15 A nominal.

    Part of LEM’s CKSR-NP compact series, this transducer stands out for its outstanding accuracy, very low temperature drift and excellent immunity to dv/dt interference – the ideal choice for demanding industrial current sensing applications.

    Core value: Non-contact measurement + Galvanic isolation between primary and secondary + Extremely high accuracy – ensures measurement safety without disturbing the circuit under test.

     

    CKSR 15-NP Key Technology Advantages

    Ultra-High Accuracy You Can Trust

    Accuracy up to ±0.8%, linearity ±1% – delivers reliable real-world current data and eliminates false readings

    Blazing Fast Response to Catch Every Detail

    Response time only 0.3 µs, 300 kHz bandwidth – captures fast transient currents and high-frequency harmonics without missing a thing

    Wide Temperature Range for Tough Environments

    Operates from –40°C to +105°C – handles harsh industrial conditions and runs stably all year round

    Reinforced Isolation for Safety & Reliability

    Galvanic isolation between primary and secondary, test voltage 4.3 kVrms – protects lowvoltage circuitry and eliminates high-voltage interference risks

    Compact Design for Easy Integration

    PCB through-hole mounting, small footprint – fits easily into various electronic systems and saves valuable board space

    Bidirectional Measurement for Smart Applications

    Supports ±51 A extended measurement range – measures both positive and negative currents, perfect for battery charge/discharge monitoring

    Low Power Consumption – Minimises Load on Your System

    Max supply current only 20 mA – can be powered from a single +5 V supply, placing little burden on system power rails


    CKSR 15-NP Technical Specifications

    Parameter

    Value

    Rated current (IPN)

    15 A

    Measurement range

    ±51 A

    Sensor type

    Flux gate, closed-loop

    Output type

    Ratiometric, voltage output

    Sensitivity

    41.67 mV/A

    Accuracy

    ±0.8%

    Linearity

    ±1%

    Response time

    0.3 µs

    Bandwidth

    300 kHz

    Supply voltage

    4.75 V ~ 5.25 V (nominal 5 V)

    Max supply current

    20 mA

    Operating temperature

    –40°C to +105°C

    Isolation voltage

    ≥ 4.3 kVrms

    Mounting

    Through-hole

    Package

    Modular

    Certifications

    CE, RoHS, UL compliant


    CKSR 15-NP Typical Applications

    Industrial Automation

    Closed-loop current monitoring in AC variable frequency drives, servo drives, and DC motor drives – ensures stable and efficient operation.

    Battery-Powered Systems

    Charge/discharge current monitoring in battery management systems (BMS) – bidirectional measurement gives accurate battery state information.

    Renewable Energy

    MPPT current detection in PV inverters, power tracking in solar inverters – helps maximise green energy conversion efficiency.

    Power Supplies

    Current monitoring in UPS systems, switch-mode power supplies (SMPS) and welding power sources – guarantees reliability of critical equipment.

    Railway & Automotive

    Current measurement in railway traction systems and automotive electronics – meets stringent reliability requirements.

    Medical Equipment

    Low-current safety monitoring in infusion pumps, patient monitors and other safety-critical medical devices (galvanic isolation eliminates electrical contact risks).

     

    Why Choose LEM CKSR 15-NP?

    Feature

    Traditional Hall Sensor

    CKSR 15-NP Flux Gate

    DC accuracy

    Moderate

    Extremely high (±0.8%)

    Temperature stability

    Significant drift

    Very low drift coefficient

    Response speed

    Slow (several µs)

    Ultra-fast (0.3 µs)

    Immunity to dv/dt

    Moderate

    Excellent

    Insertion loss

    None

    None

    Supply requirement

    Often dual supply

    Single +5 V supply

     

    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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    Ursula
    Jan 26, 2026
    ultra fast delivery.
    Marian
    Sep 04, 2025
    Very good, very satisfied!
    Una
    Jun 07, 2025
    Reliable and stable customer, thank you!
    Ena
    Feb 16, 2024
    The delivery speed is fast, the quality is good and the price is low.
    Verne
    Aug 06, 2023
    Good Company&Business Partner
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