Type 1 vs Type 2 vs Type 3 SPD: Which Level Do You Need?
Type 1, Type 2, and Type 3 SPDs differ by location and surge waveform. Learn which type your project needs and when a Type 1+2 is the right choice.
Blogs
Gas Discharge Tube (GDT): How It Works in SPD Systems
Learn what a gas discharge tube is, how it works, and how GDTs are used in SPDs. Covers 2-electrode vs 3-electrode types and GDT vs MOV comparison.
TN-C-S Earthing System Explained: Wiring, Advantages and SPD Configuration
Learn what the TN-C-S earthing system is, how it differs from TN-S and TT, and how to configure your SPD correctly for PME installations.
Surge Protection Device for Solar Panels: A Practical Selection Guide
Learn how to select the right surge protection device for solar panel systems — AC/DC placement, Type 1 vs Type 2, key IEC parameters explained.
Ethernet Surge Protection for Outdoor RJ45 Networks: Why IP68 Matters?
Protect your outdoor Ethernet from lightning strikes. Discover why an IP68-rated RJ45 Surge Protection Device is essential for Gigabit and PoE networks.
Metal Oxide Varistor (MOV): How It Works in Surge Protection
Explore how metal oxide varistors (MOVs) serve as the core of surge protection devices (SPDs), their working principles, applications in power and telecom, and why using certified MOVs is critical for long-term safety and reliability.
Surge Protection for CCTV and Surveillance Systems
Surge events destroy CCTV systems in two ways: a direct hit burns out cameras and NVRs instantly, while repeated low-level
What’s the Difference between 4+0 and 3+1 Configuration in SPDs
The choice between 4+0 and 3+1 configuration in a three-phase SPD is not a preference — it is determined by
