IEC 63445 Pre-release version
IEC 63445:2025 PRV
System referencing conductor switching device
This Final Draft International Standard is an up to 6 weeks' pre-release of the official publication. It is available for sale during its voting period: 2025-05-02 to 2025-06-13. By purchasing this FDIS now, you will automatically receive, in addition, the final publication.
IEC 63445:2025 applies to system referencing conductor switching device (SRCSD) for household and similar uses within a Prosumer’s electrical installations (PEI).
The SRCSD provides functions as described in IEC 60364-8-82:2022 [2], 82.8.2.2.4.
PEI intended for operating by either being connected to a distribution network or disconnected from the distribution network is an islandable PEI.
Intentional disconnection from and connection to the distribution network relies on the local earthing system being switched by the SRCSD. In addition, unintentional loss of distribution network is covered.
The SRCSD is a single pole device intended to connect one live conductor of the power system to an earthing arrangement.
IEC 63445:2025 applies to system referencing conductor switching device (SRCSD) for household and similar uses within a Prosumer’s electrical installations (PEI).
The SRCSD provides functions as described in IEC 60364-8-82:2022 [2], 82.8.2.2.4.
PEI intended for operating by either being connected to a distribution network or disconnected from the distribution network is an islandable PEI.
Intentional disconnection from and connection to the distribution network relies on the local earthing system being switched by the SRCSD. In addition, unintentional loss of distribution network is covered.
The SRCSD is a single pole device intended to connect one live conductor of the power system to an earthing arrangement.
CHFÂ 548.-