IEC 60061-4:1990/AMD12:2009 is an amendment to Lamp caps and holders together with gauges for the control of interchangeability and safety - Part 4: Guidelines and general information, and it is relevant where controlled fit, safety, and interchangeability are being reviewed in lighting component documentation. As a supporting document to the parent reference IEC 60061-4:1990, it should be used in technical review, conformity assessment, and procurement workflows that depend on accurate interpretation of lamp-cap and holder requirements. IEC 60061-4:1990/AMD12:2009 helps maintain consistency when evaluating related components and gauges.

IEC 60061-4:1990/AMD12:2009 standard overview

This amendment updates the guidance and general information associated with the IEC 60061 series part covering lamp caps, holders, and the gauges used to control interchangeability and safety. Its role is typically to support engineering documentation, product evaluation, and compliance reference activities rather than to function as a standalone technical specification. For organizations managing lighting component verification, IEC 60061-4:1990/AMD12:2009 can be useful when checking how the parent document should be applied in technical assessment, testing workflows, or controlled procurement decisions.

Applications of IEC 60061-4:1990/AMD12:2009

IEC 60061-4:1990/AMD12:2009 is commonly consulted in lighting product development, component qualification, and laboratory evaluation where lamp caps, holders, and related gauges must be aligned with documented interchangeability and safety expectations. It may also support supplier review, inspection planning, and conformity assessment preparation when organizations need a clear compliance reference for design validation or product documentation. In quality workflows, it can help teams interpret the parent part more consistently during technical validation and risk management activities.

Why IEC 60061-4:1990/AMD12:2009 matters

For manufacturers, test laboratories, and compliance teams, this amendment helps preserve operational consistency across technical reviews of lamp-cap and holder systems. By clarifying guidance linked to the parent document, it can reduce ambiguity during verification activities, improve safety-related evaluation, and support reliable interchangeability checks. That is valuable in procurement, engineering documentation control, and conformity assessment preparation, where even small interpretation differences may affect product acceptance, testing consistency, or downstream regulatory preparation.

• Supporting amendment linked to IEC 60061-4:1990 for guidance and general information
• Relevant to lamp caps, holders, and associated gauges used in interchangeability control
• Useful for technical review, product evaluation, and documentation-based compliance workflows
• Helps teams maintain consistency in safety, verification, and conformity assessment activities