Sockets and accessories for electronic plug-in devices. Part 2 : Specification sheets for sockets and dimensions of wiring jigs and pin straighteners.

This document represents the twelfth supplementary edition to the technical specification concerning electromechanical relays, specifically designated under the reference IEC 60149-2L:1976. Issued by the International Electrotechnical Commission, this text serves as an integral addendum to the foundational requirements established in the parent standard. It delineates additional technical criteria, testing procedures, and performance parameters that extend the scope of the original publication without altering its core framework. The content focuses on refining definitions for specific relay types and updating safety margins applicable to electromagnetic components within electrical circuits. It addresses emerging operational conditions identified by experts within the global electrical engineering community following the initial release of the main norm. By providing these supplementary clauses, the document ensures that manufacturers and users maintain consistency in design, testing, and compliance across international markets. This addition facilitates harmonization among national standards bodies and supports the uniform implementation of safety and reliability measures for electromechanical devices used in various industrial and commercial applications. The text is structured to integrate seamlessly with the primary standard, offering clarity on specialized aspects that require ongoing attention as technology evolves.