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Hot Products

CASR 15-NP , CASR15-NP

Second. Nominal Signal[Instantaneous:Voltage 2.5 +/- 0.625 V]
  • MacroQuest Part#CASR 15-NP
  • ManufacturerLEM
  • Standard Lead TimeNA
  • Part StatusActive
    • $4.28 - $5.26
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    1-99 Pieces $5.26
    100-999 Pieces $4.78
    >=1000 Pieces $4.28
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    Description FAQ Review
    Description

    CASR15-NP Current Sensor | LEM (LEM) Original Stock

     

    CASR15-NP Accurate Control Starts Here

    In motor drives, servo control, switching power supplies, UPS and more, current measurement accuracy directly determines system stability and efficiency. LEM, a world leader in electrical transducers, brings over 50 years of technology into the CASR15-NP, delivering true closed-loop fluxgate precision for your every current measurement.

    ±0.8% accuracy – that’s what it delivers. Whether DC, AC or pulsed current, the measurement remains stable and precise.

     

    Why Choose CASR15-NP?

    Key Specifications

    Parameter

    Value

    Brand

    LEM

    Rated Current

    15A

    Measuring Range

    ±51A (3x overload)

    Sensor Type

    Closed-loop fluxgate

    Output Type

    Ratiometric, voltage output

    Output Voltage

    2.5V ± 0.625V

    Sensitivity

    41.67mV/A

    Accuracy

    ±0.8%

    Linearity

    ±1%

    Bandwidth

    DC ~ 300kHz

    Response Time

    <0.3µs

    Supply Voltage

    4.75V ~ 5.25V

    Operating Temperature

    -40℃ ~ +85℃

    Isolation Test Voltage

    4.1kVrms

    Insulation Withstand Voltage

    600Vrms

    Mounting

    PCB through-hole

    Approvals

    UL 508, EN 50178, IEC 61010-1

     

    CASR15-NP Six Core Advantages to Make Your Design More Competitive

    ① Closed-Loop Fluxgate Technology – Accuracy and Stability Combined

    The CASR15-NP uses a closed-loop fluxgate architecture. Compared with traditional Hall-effect sensors, it features extremely low offset drift and excellent dv/dt immunity, maintaining stable output even in high-frequency switching environments.

    ② Ultra-Fast Response – Seize Every Millisecond

    With <0.3µs response time, your control system can detect current changes and make adjustments immediately. Whether for servo motor positioning or power supply protection, no critical signal is ever missed.

    ③ 3x Overload Capability – Handle Current Surges with Ease

    Rated at 15A, the maximum measuring range reaches ±51A. This wide range allows the sensor to remain reliable during transient overloads, providing ample safety margin for your system.

    ④ Wide Temperature Operation – Full Coverage from -40℃ to +85℃

    From outdoor equipment in freezing northern climates to factory production lines in high-temperature southern regions, the CASR15-NP works stably across the entire temperature range without sacrificing measurement accuracy.

    ⑤ Compact PCB Mount Design – Easy Integration

    The small footprint package is designed for PCB mounting, with a pin layout compatible with LTSR series, allowing easy upgrade without board redesign.

    ⑥ 5-Year Warranty – LEM Quality Promise

    Each CASR15-NP is rigorously tested by LEM before shipment. With a 5-year warranty and full RoHS compliance, your procurement is worryfree.

     

    CASR15-NP Typical Applications

    The CASR15-NP is widely used in industrial control and power management, ideal for the following systems:

    AC variable speed drives & servo motor drives – accurate current feedback is the core of motion control; the fast response of CASR15-NP enables smoother motor control

    DC motor drive static converters – high-precision measurement helps optimize system energy efficiency

    Switching mode power supplies (SMPS) & UPS – real-time current monitoring ensures stable operation

    Welding equipment power supplies – excellent noise immunity ensures reliable measurement in harsh environments

    Solar inverters – helps achieve high-efficiency energy conversion in renewable energy systems

    Battery-powered devices – low power consumption (max 20mA) extends battery life

    Server power supplies & telecom power supplies – in high-reliability applications, LEM sensors have been proven and trusted by numerous industry customers

     

    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
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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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    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. 


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    Less
    Review
    Marquis
    Jan 10, 2026
    All the parts came in new and original.
    Xenia
    Oct 09, 2025
    The packaging is very careful, thank you very much.
    Yilia
    May 17, 2025
    Express delivery is very fast
    Kaye
    Mar 14, 2024
    Great Partner We Cherish
    Homer
    Sep 25, 2023
    Great company . Good price . Good Parts !
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