IEC 60061-4:1990 defines the guidelines and general information associated with lamp caps and holders, together with the gauges used to control interchangeability and safety. For organizations working with lighting components, IEC 60061-4:1990 provides a technical reference that supports consistent product evaluation, procurement review, and conformity assessment. It is most relevant where dimensional compatibility, safe mating of parts, and documented technical validation are part of engineering or quality workflows.

IEC 60061-4:1990 standard overview

The official title shows that the document focuses on the guidance framework behind lamp caps, holders, and the associated gauges used for interchangeability control. In practice, it helps engineers and compliance teams interpret how the related component system is intended to be assessed and applied. As a primary technical document in the IEC 60061 series, it is useful for technical review, design verification, and structured assessment of lighting-related electrical equipment and components.

Applications of IEC 60061-4:1990

This reference is typically relevant in lighting product engineering, component specification, test planning, and supplier qualification for lamp caps and holders. It may support laboratory evaluation, dimensional checking, and documentation used in conformity assessment or regulatory preparation. Procurement teams can also use it when comparing component designs or reviewing product documentation to confirm compatibility expectations and reduce the risk of interchangeability issues in operational environments.

Why IEC 60061-4:1990 matters

Clear guidance on lamp caps, holders, and gauges helps reduce fit, safety, and interoperability problems in manufacturing and product approval workflows. For quality assurance teams, the document supports consistent verification activities and more reliable technical compliance decisions. It can also improve engineering validation by giving teams a common reference point for documented evaluation, helping lower risk during procurement, certification preparation, and production release processes.

• Guidance related to lamp cap and holder interchangeability control
• Support for gauge-based checking in testing and verification workflows
• Useful reference for safety-oriented component assessment and documentation
• Relevant to engineering review, supplier evaluation, and conformity assessment preparation