Shanghai Chenzhu Instrument CO., LTD.
Shanghai Chenzhu Instrument CO., LTD.

Thin Signal Surge Protection Device Gives Automation Professionals Peace of Mind

Apr 17 , 2025
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    In today's era of rapid information technology development, the application of various electronic devices is becoming more widespread. Lower operating voltage and lower overvoltage tolerance make them particularly sensitive to overvoltage in system signals. This is especially true in the field of automation, which involves a large amount of signal transmission and thus requires the installation of numerous signal surge protection device for transient overvoltage protection.


    While ensuring surge protection performance, SPD size becomes increasingly important. The more SPD units that can be installed in a single control cabinet, the fewer control cabinets are needed, thereby reducing overall costs.


    There is such asignal SPD with good performance, samll size, high quality:


    • Compact and space-saving

    • Great performance

    • User-friendly


    signal-surge-protection-device20240705112738.jpg


    CHENZHU C Series Slim Type Signal Surge Protection Device Offers High Flow Capacity and Outstanding Performance


    CHENZHU C series slim type signal surge protection device complies with the SH/T3164-2021 petrochemical instrument system lightning protection design specification


    The basic parameters of signal-type surge protectors should meet the specifications in Table 7.3.


    Table 7.3 Basic parameters of signal-type surge protectors


    Parameter Name

    Parameter Value

    Application


    Maximum continuous operating voltage

    Uc≥32V

    24V DC powered instruments

    When the DC power supply voltage might>32V, Uc≥36V

    Rated working current

    IN≥150mA


    Two-wire, three-wire, and four-wire4mA~20mA signal instruments(including those with HART communication signals)


    IN≥600mA

    24V DC powered current greater than 60mA three-wire, and four-wire4mA~20mA signal instruments


    Nominal discharge current

    ln≥10kA

    Signal type



    CHENZHU C series slim type signal surge protection device can reach


    signal-surge-protection-20240705112547.jpg


    • Smaller product size

    • But high lightning protection capability

    • Nominal discharge current In10kA

    • Type test report, SIL3 and multiple authoritative certifications for assured applications


    CHENZHU C Series Slim Type Signal Surge Protection Device Is Compact and Space-Saving


    signal-surge-protection-20240705112536.jpg


    • As slim as 6.0mm

    • From slim → to slimmer

    • Thinnest is only3.5mm

    • 2 thickness options to choose from


    CHENZHU C-Series Slim Signal Surge Protection Device with Intimate Design


    signal-surge-protection--20240705112537.jpg


    Flexibly Customizable Identification Strip for Convenient Labeling


    CHENZHU C-Series Slim Signal Surge Protector, Easy Installation, Efficient and Labor-Saving


    signal-surge-protection-20240705112538.jpg


    • 35mm DIN rail mount

    • Direct grounding through rail

    • Option for screw-type wiring, stable and reliable

    • Option for plug-in wiring, completes in one action


    CHENZHU C-Series Slim Signal Surge Protection Device Has Comprehensive Specifications, Easily Adaptable


    signal-surge-protection-20240705112442.jpg


    In explosive atmospheres, intrinsically safe SPD options are available. 


    It can protect RS-232, RS-485, RTD, TC, AI, AO, DI, DO, and other signal interfaces.

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