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Hot Products

LTC 1000-SF/SP34 , LTC1000-SF/SP34

HOT OFFER// Authorized Distributor
  • MacroQuest Part#LTC 1000-SF/SP34
  • ManufacturerLEM
  • Standard Lead TimeNA
  • Part StatusActive
    • $282.28 - $386.69
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    10-99 Pieces $320.18
    >=100 Pieces $282.28
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    Description FAQ Review
    Description

    LEM LTC 1000-SF/SP34 LTC Series Closed Loop Current Transducer

    LEM LTC 1000-SF/SP34 Product Overview

    The LTC 1000-SF/SP34 is a closed-loop Hall effect current transducer from LEM's LTC Series, designed for the electronic measurement of DC, AC, and pulsed currents with galvanic separation between the primary circuit and the secondary circuit . This modular panel-mount transducer features an integral 42 mm diameter aperture for primary conductor installation and is specifically designed for railway traction applications .

    Rated for 1000 A nominal with a measuring range of 0 to ±2400 A, it outputs a secondary current of 200 mA at nominal with < ±0.4% accuracy (at 25°C) and <0.1% linearity . Response time is less than 1 µs and frequency bandwidth is DC to 100 kHz . Supply voltage range is ±15 to ±24 V DC. Mass is 825 g and operating temperature ranges from -40°C to +85°C . Insulation test voltage is 12 kV RMS at 50 Hz for 1 minute, with 66.70 mm creepage and 45.90 mm clearance . The device meets EN 50155:2017 railway standards .

     

    LEM LTC 1000-SF/SP34 Key Specifications

    Parameter

    Value

    Rated current (IPN)

    1000 A

    Measuring range (IPM)

    0 to ±2400 A

    Secondary nominal current (ISN)

    200 mA

    Turns ratio (NP/NS)

    1:5000

    Supply voltage (VC)

    ±15 to ±24 V DC

    Total error (εtot) @ 25°C

    < ±0.4 %

    Total error (εtot) @ -40°C to +85°C

    < ±1 %

    Linearity (εL)

    < 0.1 %

    Offset current (IO) @ 25°C

    ±0.5 mA

    Temperature variation of IO

    ±1 mA

    Response time (tD 90)

    < 1 µs

    Bandwidth (BW)

    DC to 100 kHz

    Insulation (Vd)

    12 kV RMS / 50 Hz / 1 min

    Creepage/Clearance (dCp/dCl)

    66.70 / 45.90 mm

    Aperture

    42 mm diameter

    Operating temp (TA)

    -40°C to +85°C

    Mass (m)

    825 g

    Mounting

    Panel

    Secondary connection

    Molex Mini-Fit.Jr. connector

    Standards

    EN 50155:2017, EN 50121-3-2:2016

     

    LEM LTC 1000-SF/SP34 Key Advantages

    The LTC 1000-SF/SP34 employs closed-loop Hall effect technology with an insulating plastic case recognized according to UL 94-V0, delivering excellent accuracy and very good linearity while providing galvanic isolation between primary and secondary circuits . The 42 mm aperture enables non-intrusive installation of primary conductors or busbars without disconnecting existing cables . The ±2400 A measuring range accommodates significant overload conditions, while the <1 µs response time and 100 kHz bandwidth capture dynamic current signals in traction applications . The wide -40°C to +85°C operating temperature range ensures reliable performance in harsh railway environments. The 12 kV RMS insulation ensures safe operation and protection for downstream equipment . The Molex Mini-Fit.Jr. connector provides a secure and reliable secondary connection interface . A standard shield provides immunity to external interference, and the modular design supports flexible mounting options .

     

    LEM LTC 1000-SF/SP34 Typical Applications

    Single or three phase inverters for railway traction
    Propulsion and braking choppers
    Propulsion converters for trains and locomotives
    Auxiliary converters for onboard power supply
    Battery chargers for railway rolling stock
    Railway fixed installations and substations
    Overcurrent protection and fault detection in traction systems
    Circuit breakers for railway infrastructure

     

    Why Choose the LEM LTC 1000-SF/SP34?

    The LTC 1000-SF/SP34 combines a 1000 A rated current and ±2400 A measuring range with a 200 mA closed-loop current output in a robust panel-mount package with a 42 mm aperture and Molex Mini-Fit.Jr. connector. Manufactured by LEM, it delivers stable, accurate, and safe current measurement specifically for railway traction applications. The closed-loop Hall effect design provides exceptional accuracy and very good linearity, while the integral aperture and modular design simplify installation and system integration. Compliance with EN 50155:2017 railway standards ensures reliable operation in demanding rail environments, making it an ideal choice for propulsion, braking, and auxiliary converter 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
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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
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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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    Jan 25, 2026
    Top supplier, recommended
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    Nov 03, 2025
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    Jul 08, 2025
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    Mar 30, 2025
    Alice is very supportive and helpful.
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    Nov 04, 2024
    Great company. Deliver as promised new, factory sealed parts.
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