IEC 60061-4D:1995 provides guidance and general information for the Fourth supplement on lamp caps and holders together with gauges for the control of interchangeability and safety. For engineering teams, test laboratories, and procurement reviewers, it helps frame how component compatibility and safety-related checks are approached when selecting or validating lighting hardware. IEC 60061-4D:1995 is relevant where documented evaluation, technical review, and conformity assessment depend on consistent reference data for lamp cap and holder interfaces.

IEC 60061-4D:1995 standard overview

IEC 60061-4D:1995 serves as a supporting technical reference within the IEC 60061 series, focusing on guidelines and general information connected to lamp caps, holders, and the gauges used to control interchangeability and safety. Its role is typically to help users interpret the series consistently during design review, verification activities, and compliance workflows. As an original document in the series, it is useful when teams need a reliable basis for technical validation, specification review, or product evaluation of lighting-component interfaces.

Applications of IEC 60061-4D:1995

This reference is commonly used in lighting product development, component qualification, and laboratory evaluation where lamp caps and holders must be checked against established dimensional or interface expectations. It may also support supplier qualification, engineering documentation, and procurement decisions for electrical equipment that depends on compatible lamp-to-holder arrangements. In quality workflows, IEC 60061-4D:1995 can assist with testing workflows, inspection planning, and risk management when consistency of fit, safety, and interchangeability are part of the acceptance criteria.

Why IEC 60061-4D:1995 matters

IEC 60061-4D:1995 matters because controlled interchangeability is central to safe and reliable lamp installation, replacement, and maintenance. By providing general guidance tied to the gauge-based framework for caps and holders, it supports operational consistency and reduces the risk of mismatched components during conformity assessment preparation. Teams involved in technical compliance, engineering validation, and procurement review can use it to strengthen documented evaluation, improve testing consistency, and support safer product selection across lighting applications.

• Guidance for lamp cap and holder interoperability within the IEC 60061 series
• Support for gauge-based verification and safety-oriented interface checks
• Useful in laboratory evaluation, inspection planning, and technical validation
• Relevant to procurement, supplier review, and compliance documentation