IEC 60061-2D:1975 is a technical reference for fourth supplement - Lamp caps and holders together with gauges for the control of interchangeability and safety. Part 2: Lampholders, and it is relevant where lamp-holder compatibility, dimensional control, and safety-related interchangeability are part of design or procurement decisions. As a primary document in the IEC 60061 series, it supports technical review, conformity assessment, and component selection for electrical equipment that depends on standardized lamp-holding interfaces. For engineering teams, it can help align verification activities with documented requirements and reduce avoidable fitment or safety risks.

Purpose of IEC 60061-2D:1975

The purpose of IEC 60061-2D:1975 is generally to define the lamp-holder-related details needed to control interchangeability and safety within the IEC 60061 framework. In practice, that means it serves as a compliance reference for evaluating whether lamp holders and related gauges are suitable for consistent assembly and reliable operation. Because it is part 2 on lampholders, the document is especially useful during technical assessment, product evaluation, and engineering documentation reviews where dimensional compatibility and controlled interfaces matter.

Compliance applications of IEC 60061-2D:1975

Organizations may use IEC 60061-2D:1975 during laboratory evaluation, procurement review, and conformity assessment for lighting-related components and assemblies. It is relevant when checking whether lampholders correspond correctly with associated lamp caps and gauges, and when documentation is needed to support regulatory preparation or internal quality workflows. Manufacturers, test laboratories, and compliance teams can use it to structure technical validation, confirm operational consistency across parts, and support documented evaluation of lamp-holder designs before release or certification activities.

Benefits of IEC 60061-2D:1975

IEC 60061-2D:1975 helps reduce risk by supporting consistent interfaces between lamp caps, holders, and gauges, which is important for safety and interoperability. It can improve testing consistency by giving procurement and engineering teams a shared technical basis for acceptance checks and design review. For organizations managing compliance workflows, the document supports clearer conformity assessment preparation, more reliable quality assurance, and better control over component substitution or sourcing decisions. That makes it a practical reference for technical validation in lighting-related electrical equipment.

• Supports interchangeability control for lampholder-related interfaces
• Useful for safety-focused technical review and dimensional verification
• Provides a compliance reference for testing and documentation workflows
• Helps procurement and engineering teams evaluate compatible components