Low voltage surge protective devices -- Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods.
| Accuris | |
|---|---|
| Product Category | Standards and Technical Documents |
| Product Number | UNE-EN 61643-21 |
| Product Name | Low voltage surge protective devices -- Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods. |