📘 https://webstore.iec.ch/publication/59875

Alternatively, any leads on where to get a legit download (paid or free preview)?

This is the standard for Low-voltage surge protective devices – Part 1: Requirements and tests for SPDs connected to low-voltage power systems .

Need it for a compliance check on Type 1/2 SPDs. Happy to exchange standards if available.

Covers: Classification (Type 1 / Type 2 / Type 3), residual voltage, thermal stability, and operating duty tests for surge protective devices.

Iec 61643-1 Pdf May 2026

📘 https://webstore.iec.ch/publication/59875

Alternatively, any leads on where to get a legit download (paid or free preview)? iec 61643-1 pdf

This is the standard for Low-voltage surge protective devices – Part 1: Requirements and tests for SPDs connected to low-voltage power systems . 📘 https://webstore

Need it for a compliance check on Type 1/2 SPDs. Happy to exchange standards if available. iec 61643-1 pdf

Covers: Classification (Type 1 / Type 2 / Type 3), residual voltage, thermal stability, and operating duty tests for surge protective devices.