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Hot Products

CASR15-NP/SP3，CASR 15-NP/SP3

HOT OFFER// Authorized Distributor
  • MacroQuest Part#CASR15-NP/SP3
  • ManufacturerLEM
  • Standard Lead TimeNA
  • Part StatusActive
    • $10.27 - $21.42
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    Description FAQ Review
    Description

    CASR 15-NP/SP3 Closed-Loop Current Sensor

     

    CASR15-NP/SP3 Product Overview

    The CASR 15-NP/SP3 is a high-performance closed-loop current sensor from LEM, a world-leading manufacturer of current transducers. Designed for precise measurement of DC, AC, and pulsed currents, it features galvanic isolation between the primary and secondary circuits, making it ideal for a wide range of applications including industrial control, power supply management, and motor drives.

    Whether you are developing inverters, UPS systems, switch-mode power supplies, or industrial automation equipment, the CASR 15-NP/SP3 delivers stable, accurate current detection to enhance your system performance.

     

    CASR15-NP/SP3 Key Advantages

    Closed-Loop Technology for Superior Precision

    The CASR 15-NP/SP3 employs closed-loop (compensated) multi-range current transducer technology. Compared to open-loop sensors, the closed-loop design effectively eliminates errors caused by magnetic core non-linearity, achieving much higher accuracy and better temperature stability. With linearity up to ±0.1% and accuracy of ±0.8%, it meets the most demanding current measurement requirements.

    Ultra-Fast Response to Capture Transients

    300 ns response time – this is a standout specification of the CASR 15-NP/SP3. In scenarios where current changes rapidly (e.g., motor startup, short-circuit protection), this exceptional speed ensures that the control system receives feedback instantly, enabling timely adjustments and safeguarding equipment operation.

    Wide Bandwidth for AC/DC Versatility

    With a frequency range from DC to 300 kHz, the sensor accurately measures DC, line-frequency AC, and high-frequency pulsed currents. One sensor handles both AC and DC measurements, simplifying component selection and inventory management.

    Wide Operating Temperature for Harsh Environments

    A -40°C to +105°C operating temperature range allows the sensor to perform reliably in high-temperature industrial settings and cold outdoor conditions, making it particularly suitable for mission-critical industrial applications.

     

    CASR15-NP/SP3 Technical Specifications

    Parameter

    Specification

    Measuring Range

    15 A

    Measurement Type

    AC/DC

    Output Type

    Voltage output

    Sensitivity

    41.67 mV/A

    Frequency Response

    DC ~ 300 kHz

    Response Time

    300 ns

    Linearity

    ±0.1%

    Accuracy

    ±0.8%

    Supply Voltage

    4.75 V ~ 5.25 V

    Operating Temperature

    -40 °C ~ +105 °C

    Isolation Voltage

    600 Vrms

    Number of Channels

    1 channel

    Polarisation

    Unidirectional

    Mounting Type

    Through-hole (plug-in)

    Dimensions

    21.91 mm × 16.5 mm (width × height)

     

    CASR15-NP/SP3 Typical Applications

    Motor drives and control – real-time motor current monitoring for overcurrent protection and precise regulation

    Power management systems – current feedback and monitoring in UPS and switch-mode power supplies

    Industrial automation – current detection and protection in machine tools, robotics, and other equipment

    Renewable energy and energy storage – photovoltaic inverters, battery management systems (BMS)

    Test and measurement instruments – precision current measurement and analysis

     

    Why Choose the CASR 15-NP/SP3?

    Comparison

    CASR 15-NP/SP3

    Typical Open-Loop Sensor

    Response Time

    300 ns

    Microseconds (3-7 μs)

    Linearity

    ±0.1%

    ±0.5% ~ ±1%

    Accuracy

    ±0.8%

    ±1% ~ ±3%

    Temperature Stability

    Excellent

    Moderate

    Immunity to Interference

    High

    Weaker

    For applications demanding high accuracy and fast response in current sensing, the CASR 15-NP/SP3 is your optimal choice.

     

    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
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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
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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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    Zachariah
    Feb 08, 2026
    excellent seller and very good communication
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    Oct 02, 2025
    On time schedule delivery
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    Jul 25, 2025
    The quality of this product is very good, the packaging is perfect, and the delivery speed is very fast.
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    May 12, 2025
    Great support, good quality..Always a pleasure
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    Feb 18, 2024
    This Company is a really good Company. We have done a few deals with them and all the parts came in new and orig.
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