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DIN EN IEC 61643-21	2024-06-05	Low voltage surge protective devices - Part 21: Surge protective devices connected to telecommunications and signalling networks - Requirements and testing methods (IEC 37A/399/CD:2023) More	Comment
DIN EN IEC 61643-332	2023-08-10	Components for low-voltage surge protection - Part 332: Selection and application principles for metal oxide varistors (MOV) (IEC 37B/230/CDV:2022); German version prEN IEC 61643-332:2022 More	Comment
DIN VDE 0845-1-4	2021-01-27	Protection of telecommunication lines using metallic symmetric conductors against lightning-induced surges More	Comment
DIN VDE 0845-1-2	2021-01-27	Protection of telecommunication lines against direct lightning flashes More	Comment
DIN VDE 0845-1-3	2021-01-27	Protection of telecommunication lines against direct lightning flashes More	Comment
DIN VDE 0845-6-3	2016-08-01	Electromagnetic influence of electric power supply on telecommunication systems - Part 3: Influence by alternating current traction systems More	Comment
IEC 37B/99/CDV	2008-06-13	IEC 61643-312 Ed. 1.0: Components for low-voltage surge protective devices - Part 312: Preferred values and characteristics for gas discharge tubes More	Comment
IEC 37B/100/CDV	2008-06-13	Components for low-voltage surge protective devices - Part 313: Selection and applications principles for gas discharge tubes More	Comment
IEC 37B/98/CDV	2008-06-13	IEC 61643-311 Ed. 2.0: Components for low-voltage surge protective devices - Part 311: Test circuits and methods for gas discharge tubes More	Comment
IEC 37B/89/NP	2008-01-04	Isolation Transformers for Lightning Protection(ITL) More	Comment

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