TN-S Earthing System: Wiring, Diagram and SPD Setup
2026-05-20
Learn what a TN-S earthing system is, how it differs from TN-C-S and TT, and how to configure your SPD correctly for TN-S installations.
Blogs
Twenty Years of Surge Protection: How Thor Electric Got Here?
2026-05-15
Thor Electric marks its 20th anniversary in 2026 — two decades of surge protection innovation, from first CE certification to smart manufacturing and a full IEC/TUV-certified SPD range across 80+ countries.
SPD Wiring Diagram: Single Phase, 3 Phase and Solar SPD
2026-05-12
Step-by-step SPD wiring diagrams for single-phase, 3-phase, and solar. Covers Type 1, Type 2, DC, and IEC installation requirements.
What Is SPD in Electrical Systems? Meaning, Types and How It Works
2026-05-06
SPD stands for Surge Protective Device. Learn how it protects electrical systems, the 3 IEC-defined types, and key selection parameters.
Type 1 vs Type 2 vs Type 3 SPD: What’s the Difference?
2026-04-29
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.
Gas Discharge Tube (GDT): How It Works in SPD Systems
2026-04-24
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
2026-04-21
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
2026-04-16
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.