SPD Application Scenarios & Selection Guide

DC SPD (600V / 1000V / 1500V / 12V / 24V / 48V)

Application:

  • 600V–1500V DC: Solar PV systems (between modules, combiner boxes, inverters)

  • 12V / 24V / 48V DC: Security systems, LED lighting, communication power, and control circuits

  • Battery energy storage and DC charging systems

Selection Guide:

  • Match nominal system voltage

  • Ensure correct polarity (+/–) connection

  • Choose Imax 40kA or higher for PV applications

  • Install at PV combiner box, inverter input/output, or DC distribution box

    DC Type 1+2 SPD

    Application:

    • Solar PV systems located in lightning-prone areas

    • DC main distribution for large PV fields or outdoor installations with metal structures

    • Provides both lightning and surge protection in one unit

    Selection Guide:

    • Choose Iimp ≥ 12.5kA (10/350μs) and Imax ≥ 40kA

    • Install at PV array junction box oder DC main cabinet

    • Suitable for 1500V/1000V/600V DC PV-Anlagen

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