I.S. EN 61439-1:2011

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 Interface characteristics
6 Information
7 Service conditions
8 Constructional requirements
9 Performance requirements
10 Design verification
11 Routine verification
Annex A (normative) - Minimum and maximum cross-section
        of copper conductors suitable for connection
        to terminals for external conductors
Annex B (normative) - Method of calculating the
        cross-sectional area of protective
        conductors with regard to thermal stresses
        due to currents of short duration
Annex C (informative) - User information template
Annex D (informative) - Design verification
Annex E (informative) - Rated diversity factor
Annex F (normative) - Measurement of clearances and creepage
        distances
Annex G (normative) - Correlation between the nominal voltage
        of the supply system and the rated impulse withstand
        voltage of the equipment
Annex H (informative) - Operating current and power loss of
        copper conductors
Annex I (Void)
Annex J (normative) - Electromagnetic compatibility (EMC)
Annex K (normative) - Protection by electrical separation
Annex L (informative) - Clearances and creepage distances
        for North American region
Annex M (informative) - North American temperature rise
        limits
Annex N (normative) - Operating current and power loss
        of bare copper bars
Annex O (informative) - Guidance on temperature rise
        verification
Annex P (normative) - Verification of the short-circuit
        withstand strength of busbar structures by comparison
        with a tested reference design by calculation
Bibliography
Annex ZA (normative) - Normative references to international
         publications with their corresponding European
         publications
Annex ZZ (informative) - Coverage of Essential Requirements
         of EC Directive 2004/108/EC

Specifies the definitions and states the service conditions, construction requirements, technical characteristics and verification requirements for low-voltage switchgear and controlgear assemblies.