IEC TR 63225:2019 highlights the problem of incompatibility of connectors for DC-application in photovoltaic systems (DC connectors) produced by different manufacturers. It addresses four particular issues in that context:

* background information on incompatibility of DC connectors from different manufacturers,
* observations and challenges concerning the handling of DC connectors from different manufacturers,
* stakeholders concerned by the incompatibility of DC connectors,
* recommendations for long-term standardization and interim measures to address incompatibility of DC connectors