IEC 60947-7-3 : 2.0

Table of Contents

FOREWORD<br>INTRODUCTION<br>1 General<br>&nbsp;&nbsp;1.1 Scope<br>&nbsp;&nbsp;1.2 Normative references<br>2 Definitions<br>3 Classification<br>4 Characteristics<br>&nbsp;&nbsp;4.1 Fuse-links<br>&nbsp;&nbsp;4.2 Rated power dissipation value<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.2.1 Overload and short-circuit protection (P[V])<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.2.2 Exclusive short-circuit protection (P[VK])<br>&nbsp;&nbsp;4.3 Rated and limiting values<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.3.1 Rated voltages<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.3.3 Standard cross-sections<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.3.4 Rated cross-section<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.3.5 Rated connecting capacity<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.3.6 Working voltage<br>5 Product information<br>&nbsp;&nbsp;5.1 Marking<br>&nbsp;&nbsp;5.2 Additional information<br>&nbsp;&nbsp;5.3 Marking on the packing unit<br>6 Normal service, mounting and transport conditions<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.1.1 Ambient temperature<br>7 Constructional and performance requirements<br>&nbsp;&nbsp;7.1 Constructional requirements<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.1.1 Clamping units<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.1.2 Mounting<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.1.3 Clearances and creepage distances<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.1.4 Terminal identification and marking<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.1.6 Rated cross-section and rated connecting capacity<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.1.8 Actuating conditions <br>&nbsp;&nbsp;7.2 Performance requirements <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.2.1 Mechanical requirements during actuation<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.2.2 Electrical requirements <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.2.3 Thermal requirements<br>&nbsp;&nbsp;7.3 Electromagnetic compatibility (EMC)<br>8 Tests <br>&nbsp;&nbsp;8.1 Kinds of test<br>&nbsp;&nbsp;8.2 General<br>&nbsp;&nbsp;8.3 Verification of mechanical characteristics <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.3.1 General<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.3.2 Attachment of the fuse terminal block on its support <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.3.3 Mechanical properties of clamping units of a fuse<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;terminal block<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.3.4 Compatibility between fuse terminal blocks and the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;fuse-link<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.3.5 Mechanical strength of the connection between the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;terminal block base and the fuse-carrier<br>&nbsp;&nbsp;8.4 Verification of electrical characteristics<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.4.1 General<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.4.3 Dielectric tests<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.4.4 Contact resistance<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.4.5 Temperature rise of clamping units <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.4.7 Ageing test (for screwless-type fuse terminal <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;blocks only)<br>&nbsp;&nbsp;8.5 Verification of thermal characteristics <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.5.1 General<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.5.2 Rated power dissipation <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.5.3 Durability<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.5.4 Needle flame test<br>&nbsp;&nbsp;8.6 Verification of EMC characteristics <br>Annex A (normative) Gauges<br>Annex B (informative) Power dissipation values P[V] and P[VK] <br>Annex C (normative) Order of tests and number of<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;specimens<br>Bibliography

Abstract

Applicable to fuse terminal blocks with screw-type or screwless-type clamping units for the connection of rigid (solid or stranded) or flexible copper conductors for the reception of cartridge fuse-links in accordance with IEC 60127-2, intended primarily for industrial or similar use in circuits not exceeding 1000 V a.c., up to 1000 Hz or 1500 V d.c., and having a maximum short-circuit breaking capacity of 1500 A.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	International Electrotechnical Committee
Pages
ISBN
Committee	TC 17