EN 60999-1:2000

• Abstract:

  Applies to screw-type and screwless-type clamping units for connecting devices, either as separate entities or as integral parts of equipment, for the connection of electrical copper conductors (complying with IEC 228), rigid (solid or stranded) and/or flexible, having a cross-sectional area of 0.5 mm2 up to and including 35 mm2 and equivalent AWG sizes with a rated voltage not exceeding 1 000 V a.c. with a frequency up to and including 1 000 Hz, and 1 500 V d.c. Has the status of a group safety publication in accordance with IEC Guide 104.

• Status: Published
• Publication Date: 08-Mar-2000
• ICS: 29.120.20 - Connecting devices
• Technical Committee: CLC/SR 23 - Electrical accessories
• Drafting Committee: IEC/TC 23 - IEC_TC_23
• Parallel Committee: IEC/SC 23F - IEC_SC_23F
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 09-Mar-2000
• Completion Date: 09-Mar-2000
• Directive: Not Harmonized2006/95/EC - Directive 2006/95/EC of the European Parliament and of the Council of 12 December 2006 on the harmonisation of the laws of Member States relating to electrical equipment designed for use within certain voltage limits (codified version)
  OJ Ref: C 71/, C 71/17, C 348/03 OJ Date: 28-Nov-2013
• Directive:

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  Harmonized Standard2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
  OJ Ref: C 249/03 OJ Date: 08-Jul-2016
• Directive:

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  Harmonized Standard2014/53/EU - Directive 2014/53/EU of The European Parliament and of the Council of 16 April 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of radio equipment and repealing Directive 1999/5/EC
• Directive:

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  Not Harmonized73/23/EEC - Electrical equipment designed for use within certain voltage limits
  OJ Ref: C 208
• Ref Project: SIST EN 60999-1:2001 - Connecting devices - Electrical copper conductors - Safety requirements for screw-type and screwless-type clamping units -- Part 1: General requirements and particular requirements for clamping units for conductors from 0,2 mm² up to 35 mm² (included)

• Replaces: EN 60999-1:1993 - Connecting devices - Safety requirements for screw-type and screwless-type clamping units for electrical copper conductors - Part 1: General requirements and particular requirements for conductors from 0,5 mm² up to 35 mm² (included)
• Effective Date: 29-Jan-2023
• Refers: ISO 2081:1986 - Metallic coatings — Electroplated coatings of zinc on iron or steel
• Effective Date: 10-Feb-2026
• Refers: EN 294:1992/AC:1993 - Safety of machinery - Safety distance to prevent danger zones being reached by the upper limbs
• Effective Date: 09-Feb-2026
• Refers: EN 54-11:2001 - Fire detection and fire alarm systems - Part 11: Manual call points
• Effective Date: 09-Feb-2026
• Refers: EN 12540:2000 - Corrosion protection of metals - Electrodeposited coatings of nickel, nickel plus chromium, copper plus nickel and copper plus nickel plus chromium
• Effective Date: 09-Feb-2026
• Refers: HD 383 S2:1986 - Conductors of insulated cables - First supplement: Guide to the dimensional limits of circular conductors
• Effective Date: 03-Feb-2026
• Referred By: EN 12693:2026 - Refrigerating systems and heat pumps - Safety and environmental requirements - Positive displacement refrigerant compressors
• Effective Date: 16-Sep-2026
• Referred By: EN IEC 61076-2-104:2026 - Connectors for electrical and electronic equipment - Product requirements - Part 2-104: Circular connectors - Detail specification for circular connectors with M8 screw-locking or snap-locking
• Effective Date: 10-Mar-2026
• Referred By: EN 12693:2008 - Refrigerating systems and heat pumps - Safety and environmental requirements - Positive displacement refrigerant compressors
• Effective Date: 09-Feb-2026
• Referred By: EN 61534-1:2003 - Powertrack systems - Part 1: General requirements
• Effective Date: 03-Feb-2026
• Referred By: EN 62841-2-21:2019 - Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery - Safety - Part 2-21: Particular requirements for hand-held drain cleaners
• Effective Date: 03-Feb-2026
• Referred By: EN IEC 61076-3-126:2023 - Connectors for electrical and electronic equipment - Product requirements - Part 3-126: Rectangular connectors - Detail specification for 5-way power connectors for industrial environments with push-pull locking
• Effective Date: 03-Feb-2026
• Referred By: EN IEC 60320-2-1:2021 - Appliance couplers for household and similar general purposes - Part 2-1: Sewing machine couplers
• Effective Date: 03-Feb-2026
• Referred By: EN 60079-15:2010 - Explosive atmospheres - Part 15: Equipment protection by type of protection "n"
• Effective Date: 03-Feb-2026
• Referred By: EN 61076-3-118:2010 - Connectors for electronic equipment - Product requirements - Part 3-118: Rectangular connectors - Detail specification for a 4 pole + PE power connector with push-pull coupling
• Effective Date: 03-Feb-2026

Overview

EN 60999-1:2000 (CLC adoption of IEC 60999-1:1999) specifies safety requirements for connecting devices that use screw-type and screwless-type clamping units for electrical copper conductors. The standard applies to standalone clamping units or those integrated into equipment, for copper conductors (rigid or flexible) conforming to IEC 228 with cross-sectional areas from 0.2 mm² up to 35 mm² (included). Rated voltages covered are up to 1 000 V a.c. (≤1 000 Hz) and 1 500 V d.c. EN 60999-1:2000 carries the status of a group safety publication per IEC Guide 104.

Key Topics

• Scope and applicability: Defines conductor types (rigid, stranded, flexible) and the conductor size range (0.2 mm²–35 mm²) including equivalent AWG sizes.
• Types of clamping units: Covers both screw-type and screwless-type clamps used in connecting devices.
• Safety requirements: Addresses essential safety aspects for clamping units used in electrical connections, including requirements related to:
  • Conductor accommodation and secure clamping
  • Electrical rating limits (voltage and frequency)
  • Integration as separate parts or as part of equipment
• Compliance context: Establishes consistency with IEC 60999-1:1999 and references conductor standards (IEC 228) and IEC Guide 104 for group safety publication status.

Applications and Who Uses It

EN 60999-1:2000 is relevant to professionals and organizations involved in the design, manufacture, testing, installation and certification of electrical connection components:

• Terminal block and connector manufacturers designing screw or spring/clamp systems for copper conductors
• Switchgear and distribution board designers integrating clamping units into assemblies
• Electrical equipment manufacturers (lighting, appliances, control gear) specifying internal connections
• Test laboratories and conformity assessors verifying compliance with safety requirements
• Electrical installers and specifiers selecting appropriate connectors for building and industrial wiring

Using this standard helps ensure safe, consistent connections for copper conductors across building, industrial and appliance applications, reducing risk of loose connections and electrical hazards.

Related Standards

• IEC 60999-1:1999 (original IEC publication)
• IEC 228 (conductors - referenced for conductor types)
• IEC Guide 104 (group safety publication guidance)

Keywords: EN 60999-1:2000, connecting devices, clamping units, screw-type, screwless-type, electrical copper conductors, 0.2 mm²–35 mm², safety requirements.

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Connecting devices - Electrical copper conductors - Safety requirements for screw-type
and screwless-type clamping units - Part 1: General requirements and particular
requirements for clamping units for conductors from 0,2 mm² up to 35 mm² (included)
(IEC 60999-1:1999)
Verbindungsmaterial - Elektrische Kupferleiter - Sicherheitsanforderungen für
Schraubklemmstellen und schraubenlose Klemmstel
...