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Hot Products

LA 25-NP/SP25 , LA25-NP/SP25

HOT OFFER// Authorized Distributor
  • MacroQuest Part#LA 25-NP/SP25
  • ManufacturerLEM
  • Standard Lead TimeNA
  • Part StatusActive
    • $21.71 - $54.14
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    10-99 Pieces $34.14
    100-499 Pieces $30.33
    500-999 Pieces $24.57
    >=1000 Pieces $21.71
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    Description FAQ Review
    Description

    LEM LA 25-NP/SP25 LA25NP Series Closed Loop Current Transducer

     

    LEM LA 25-NP/SP25 Product Overview

    The LA 25-NP/SP25 is a closed-loop Hall effect current transducer from LEM's LA25NP Series, designed for the electronic measurement of DC, AC, and pulsed currents with galvanic isolation between the primary and secondary circuits. This multi-range PCB-mount transducer features an integrated primary conductor, enabling multiple nominal current ratings depending on the PCB layout design.

    Rated for a selectable nominal current of 5 A, 6 A, 8 A, 12 A, or 25 A, with a measuring range of ±36 A, it outputs an instantaneous secondary current of 25 mA. Accuracy is ±0.9%, with linearity of ±0.2%. Response time is 1 µs and bandwidth is DC to 150 kHz. Supply voltage is ±15 V. Operating temperature ranges from -40°C to +85°C. Insulation test voltage is 2.5 kV RMS (4 kV DC / 5 min), with a creepage and clearance distance of 10.63 mm. Mass is 22 g. The insulating plastic case is recognized according to UL 94-V0.

     

    LEM LA 25-NP/SP25 Key Specifications

    Parameter

    Value

    Rated current (IPN)

    5 A, 6 A, 8 A, 12 A, 25 A (selectable)

    Measuring range (IPM)

    ±36 A

    Secondary nominal current (ISN)

    25 mA (instantaneous)

    Turns ratio

    1-2-3-4-5 : 1000

    Supply voltage (VC)

    ±15 V (±5%)

    Accuracy (X)

    ±0.9 %

    Linearity (EL)

    ±0.2 %

    Response time (tr)

    1 µs

    Bandwidth (BW)

    DC to 150 kHz

    Insulation (Vd)

    2.5 kV RMS (4 kV DC / 5 min)

    Creepage/Clearance

    10.63 mm

    Operating temp (TA)

    -40°C to +85°C

    Mass (m)

    22 g

    Mounting

    PCB (through-hole)

    Standards

    EN 50155:2017, UL 508:2010

     

    LEM LA 25-NP/SP25 Key Advantages

    The LA 25-NP/SP25 employs closed-loop Hall effect technology, delivering 0.9% accuracy and 0.2% linearity while providing galvanic isolation. The selectable multi-range design offers flexibility for various current levels without hardware changes. The ±36 A measuring range captures overload conditions, while the 1 µs response time and 150 kHz bandwidth capture dynamic signals. The design offers low temperature drift, high immunity to external interference, no insertion losses, and current overload capability.

     

    LEM LA 25-NP/SP25 Typical Applications

    Single or three phase inverters
    Propulsion and braking choppers
    Propulsion converters for railway traction
    Auxiliary converters for onboard power supply
    Battery chargers for railway rolling stock
    AC variable speed and servo motor drives
    Uninterruptible Power Supplies (UPS)
    Switched Mode Power Supplies (SMPS)

     

    Why Choose the LEM LA 25-NP/SP25?

    The LA 25-NP/SP25 combines selectable 5 A to 25 A current ratings with ±36 A range and 25 mA output in a compact PCB-mount package. Manufactured by LEM, it delivers stable, accurate, and safe current measurement for railway, industrial, and renewable energy applications. The multi-range flexibility and wide -40°C to +85°C operating temperature range ensure reliable performance in demanding environments, making it ideal for trackside traction and onboard railway systems.

     

    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
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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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    Less
    Review
    Quinton
    Jan 28, 2026
    prompt delivery and quality
    Verity
    Jul 17, 2025
    Come back later!
    Marian
    Jul 04, 2025
    A very good supplier.
    Violet
    Apr 23, 2024
    This parts is worth recommending and very good.
    Letty
    Nov 26, 2023
    Very good,very satisfied
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