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Hot Products

LTC 350-TF , LTC350-TF

HOT OFFER// Authorized Distributor
  • MacroQuest Part#LTC 350-TF
  • ManufacturerLEM
  • Standard Lead TimeNA
  • Part StatusActive
    • $182.21 - $249.59
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    10-99 Pieces $206.66
    >=100 Pieces $182.21
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    Description FAQ Review
    Description

    LEM LTC 350-TF LTC Series Closed Loop Current Transducer

    LEM LTC 350-TF Product Overview

    The LTC 350-TF 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 isolation between the primary circuit and the secondary circuit . This panel-mount transducer features an integrated busbar and pre-mounted feet for simplified installation in railway applications .

    Rated for 350 A nominal with a measuring range of 0 to ±1200 A, it outputs a secondary current of 175 mA at nominal with ±0.5% accuracy and <0.1% linearity . The conversion ratio is 1:2000 . Response time is <1 µs with a di/dt accurately followed >100 A/µs, and frequency bandwidth is DC to 100 kHz . Supply voltage range is ±15 V to ±24 V DC . Mass is 650 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 63.2 mm creepage and 48.8 mm clearance . The 27.5 mm diameter aperture accommodates the primary conductor . The device meets EN 50155 railway standards .

     

    LEM LTC 350-TF Key Specifications

    Parameter

    Value

    Rated current (IPN)

    350 A

    Measuring range (IPM)

    0 to ±1200 A

    Secondary nominal current (ISN)

    175 mA

    Conversion ratio (KN)

    1:2000

    Supply voltage (VC)

    ±15 V to ±24 V DC

    Accuracy (X)

    ±0.5 %

    Linearity (EL)

    < 0.1 %

    Response time (tr)

    < 1 µs

    Bandwidth (BW)

    DC to 100 kHz

    Insulation (Vd)

    12 kV RMS / 50 Hz / 1 min

    Creepage/Clearance (dCp/dCl)

    63.2 / 48.8 mm

    Aperture

    27.5 mm diameter

    Operating temp (TA)

    -40°C to +85°C

    Mass (m)

    650 g

    Mounting

    Panel (with integrated busbar and feet)

    Standards

    EN 50155:2001

     

    LEM LTC 350-TF Key Advantages

    The LTC 350-TF employs closed-loop Hall effect technology, delivering ±0.5% accuracy and <0.1% linearity while providing galvanic isolation between primary and secondary circuits . The integrated busbar and pre-mounted feet simplify installation in railway systems, while the modular design enables flexible mounting options . The ±1200 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 and UL94-V0 recognized insulating plastic case ensure safe operation and protection for downstream equipment . The dual fastening mode for secondary connections (4xM5 threaded studs or 4xFaston 6.3 × 0.8 mm) provides installation flexibility . A standard shield enhances EMI immunity.

     

    LEM LTC 350-TF 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 350-TF?

    The LTC 350-TF combines a 350 A rated current and ±1200 A measuring range with a 175 mA closed-loop current output in a robust panel-mount package with integrated busbar and feet . 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 linearity, while the integrated busbar and feet simplify installation. The compliance with EN 50155 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
    alice@mymacroquest.com

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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
    April
    Mar 30, 2026
    Good. Keep picking up
    Manley
    Feb 16, 2026
    Very good quality and the send was fast I recommend this seller is perfect.
    Fulton
    Aug 10, 2025
    Reliable company and reliable guy.
    Ishtar
    Apr 15, 2024
    Elsa, thanks for quick response and professional job
    Devic
    Jan 31, 2024
    Hopefully we will build up a long-term relationship
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