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Product News Company News Blog
  • Built In Resistors In Signal Surge Protection Devices
    Learn how built-in resistors improve signal surge protection device. We'll cover their function in safeguarding Ethernet and RS485 data lines from transients.
    2025-08-11
  • How To Test Surge Protective Devices (Spds)
    This article explains methods for testing surge protection devices, including multimeter procedures, SPD test equipment, applicable standards (IEC 61643, UL 1449), and maintenance guidelines.
    2025-08-04
  • Comprehensive Guide to Surge Protection Device Maintenance
    This technical guide to SPD maintenance covers everything from lifespan and inspection frequency to performance testing and replacement criteria—ideal for engineers and facility managers.
    2025-07-21
  • Grounding Systems and Equipotential Bonding: Types, Importance, and Applications
    Comprehensive guide to grounding systems and equipotential bonding, including TN-C, TT, and IT earthing types, bonding conductors, and electrical safety standards.
    2025-07-15
  • Variation in Uc Selection for Surge Protective Devices (SPDs) Across Countries
    Explore how Uc (MCOV) values for surge protective devices vary across regions like Europe, North America, and China, and how local power systems and standards impact SPD selection.
    2025-07-07
  • What is single-phase Surge Protection - Do I Really Need It?
    Single-phase power requires careful surge protection; here’s everything you need to know to protect your system effectively.
    2025-07-01
  • What is lightning protection zone (LPZ) how LPZ affects your surge protection device selection?
    Lightning protection zones (LPZs) are areas that within a building or structure facing varied risk levels of lightning strike and transient overvoltages.
    2025-06-23
  • Understanding 3 Phase Surge Protection and Choosing the Right SPDs
    Comprehensive guide to 3-phase surge protection: its function, critical role in electrical systems, and selecting appropriate SPDs for optimal system safety.
    2025-06-16
  • What Happens If You Replace A Fuse with A Higher Amp Fuse
    Replacing a fuse with higher amp rating creates fire hazards and equipment damage. Learn proper fuse selection to protect your electrical system and prevent failures.
    2025-06-09
  • Coordinated Surge Protection: How to Cascade/Layer SPDs for a Meshed Protection Approach?
    Install Type 1, 2 & 3 SPDs with proper spacing for cascaded protection. Follow IEC 61643-11 standards to protect industrial systems from surge damage.
    2025-06-02
  • How to Size Surge Protection Devices (SPD): Electrical Ratings & Enclosure Fit
    Properly sizing a SPD is a critical first step in building a reliable electrical protection system. Both oversizing and undersizing can compromise performance, safety, and cost-efficiency.
    2025-05-19
  • Understanding the Importance of Surge Protection: Lessons from Fire Extinguishers
    What do surge protective devices (SPDs) and fire extinguishers have in common? Discover how this comparison highlights the value of safeguarding electrical systems before disaster strikes.
    2025-04-10
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Thor is a surge protector manufacturer that has been focusing on lightning protection for 19 years. Provides AC/DC/signal surge protection device and other products.

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  • AC Surge Protective Device
  • DC Surge Protective Device
  • PV Surge Protective Device
  • Signal Surge Protective Device
  • Lightning Protection Box
  • Lightning Rod
  • Lightning strike counter
Contact Us
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Add: Qianyangdong Industrial Zone YueqingZhejiang Province,China
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WhatsApp/wechat:+86 18969702600
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WhatsApp/wechat:+86 15397351020
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E-mail:info@thorspd.com
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