IEC 62873-3-1:2020 PDF

Residual current operated circuit-breakers for household and similar use - Part 3-1: Particular requirements for devices with screwless-type terminals for external copper conductors

First page of standard IEC 62873-3-1:2020

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Title (English):

IEC 62873-3-1:2020

Residual current operated circuit-breakers for household and similar use - Part 3-1: Particular requirements for devices with screwless-type terminals for external copper conductors

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 15
Publication date:: November 20, 2020
Edition:: IEC IS 62873 edition 2 version 1
ICS:: 29.120.50

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Description (English):

IEC 62873-3-1:2020 applies to devices equipped with screwless-type terminals for current not exceeding 40 A, primarily suitable for connecting unprepared copper conductors of cross‑section up to 10 mm2. This second edition cancels and replaces the first edition published in 2016. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - Modification of scope to cover screwless-type terminals up to 40 A; - Modification of scope to address other devices in addition to RCDs; - Modification of Table 1 to cover rated currents up to 40 A; - Modification of 8.1 so that IEC 62873-3-1 can be referred to by other product standards in addition to those for RCDs; - Modification of 9.1 so that IEC 62873-3-1 can be referred to by other product standards in addition to those for RCDs.

Technical details

Technical committee: SC 23E - Circuit-breakers and similar equipment for household use
SKU: IEC 62873-3-1:2020

Abstract

Overview

IEC 62873-3-1:2020 is an IEC product-specific technical standard that defines particular requirements for residual current operated circuit-breakers (RCDs) and other devices equipped with screwless-type terminals for external copper conductors. This second edition updates the 2016 version and expands the scope to cover screwless-type terminals for rated currents up to 40 A, primarily suitable for connecting unprepared copper conductors up to 10 mm² cross-section. The document is intended to be applied together with the applicable RCD product standard rather than used alone.

Key topics and technical requirements

Scope and applicability: Requirements apply to devices with screwless-type terminals for currents ≤ 40 A and conductors up to 10 mm²; the standard may be referenced by a range of product standards beyond RCDs.
Terminal types and definitions: Defines terms such as universal terminal, non-universal terminal, push-wire terminal, clamping unit, and unprepared conductor.
Marking and product information: Specifies marking rules for universal and non‑universal terminals (e.g., “sol”, “r”, “f”), insulation stripping length, and maximum number of conductors clamped.
Construction and design requirements: Covers terminal design, dimensions of connectable conductors, connectable cross-sectional areas, insertion and withdrawal procedures, and resistance to ageing.
Testing and reliability: Includes mandatory tests for terminals such as mechanical strength, cycling tests, reliability of screwless systems and connections, and pull force testing (see Tables 1–4 for conductor sizes and test arrangements).
Compatibility with product standards: Intended to be referenced by RCD product standards (e.g., IEC 61008, IEC 61009) and other device standards.

Significant technical changes in the 2020 edition:

Scope extended to screwless-type terminals up to 40 A
Scope broadened to address other devices in addition to RCDs
Table updates to reflect rated currents up to 40 A
Clause changes (8.1 and 9.1) to allow wider reference by other product standards

Practical applications

Guidance for manufacturers designing RCDs, RCBOs or similar devices with screwless terminals
Requirements for product test labs and certification bodies performing terminal reliability and mechanical tests
Reference for standards writers integrating terminal requirements into other product standards
Useful to design engineers and technical specifiers verifying connector compatibility with solid or stranded copper conductors and installation instructions

Who should use this standard

Electrical equipment manufacturers and designers
Compliance and regulatory teams
Test laboratories and certification bodies
Standards committees and product specifiers
Installers seeking to understand marking and conductor preparation requirements

Related standards

IEC 61008-1 (RCCBs)
IEC 61009-1 (RCBOs)
IEC 62873-2 (RCD vocabulary)
Other parts of the IEC 62873 series

Keywords: IEC 62873-3-1:2020, screwless-type terminals, residual current operated circuit-breakers, RCDs, copper conductors, up to 40 A, terminal reliability, IEC 61008, IEC 61009.

Related standards

Standards mentioned in the description

Abstract

Overview

Key topics and technical requirements

Scope and applicability: Requirements apply to devices with screwless-type terminals for currents ≤ 40 A and conductors up to 10 mm²; the standard may be referenced by a range of product standards beyond RCDs.
Terminal types and definitions: Defines terms such as universal terminal, non-universal terminal, push-wire terminal, clamping unit, and unprepared conductor.
Marking and product information: Specifies marking rules for universal and non‑universal terminals (e.g., “sol”, “r”, “f”), insulation stripping length, and maximum number of conductors clamped.
Construction and design requirements: Covers terminal design, dimensions of connectable conductors, connectable cross-sectional areas, insertion and withdrawal procedures, and resistance to ageing.
Testing and reliability: Includes mandatory tests for terminals such as mechanical strength, cycling tests, reliability of screwless systems and connections, and pull force testing (see Tables 1–4 for conductor sizes and test arrangements).
Compatibility with product standards: Intended to be referenced by RCD product standards (e.g., IEC 61008, IEC 61009) and other device standards.

Significant technical changes in the 2020 edition:

Scope extended to screwless-type terminals up to 40 A
Scope broadened to address other devices in addition to RCDs
Table updates to reflect rated currents up to 40 A
Clause changes (8.1 and 9.1) to allow wider reference by other product standards

Practical applications

Guidance for manufacturers designing RCDs, RCBOs or similar devices with screwless terminals
Requirements for product test labs and certification bodies performing terminal reliability and mechanical tests
Reference for standards writers integrating terminal requirements into other product standards
Useful to design engineers and technical specifiers verifying connector compatibility with solid or stranded copper conductors and installation instructions

Who should use this standard

Electrical equipment manufacturers and designers
Compliance and regulatory teams
Test laboratories and certification bodies
Standards committees and product specifiers
Installers seeking to understand marking and conductor preparation requirements

Related standards

IEC 61008-1 (RCCBs)
IEC 61009-1 (RCBOs)
IEC 62873-2 (RCD vocabulary)
Other parts of the IEC 62873 series

Keywords: IEC 62873-3-1:2020, screwless-type terminals, residual current operated circuit-breakers, RCDs, copper conductors, up to 40 A, terminal reliability, IEC 61008, IEC 61009.

IEC 62873-3-1:2020 PDF

Technical details

Abstract

Overview

Key topics and technical requirements

Practical applications

Who should use this standard

Related standards

Related standards

Abstract

Overview

Key topics and technical requirements

Practical applications

Who should use this standard

Related standards

Related standards

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