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      • CSA Group
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      • Industrial Products (Hazloc, Energy and Power Equipment and Machinery) - Canadia

      Codes & Standards - Subscribe

      CSA C22.2 NO. 60947-7-4:18 (R2022)

      Low-voltage switchgear and controlgear — Part 7-4: Ancillary equipment — PCB terminal blocks for copper conductors (Trinational standard with NMX-J-538/7-4-ANCE and UL 60974-7-4)

      SKU: 2704408 Published by CSA Group Publication Year 2018 Reaffirmed in 2022

      Product Details

      • Preface/Scope
      • Items Included

      Preface


      This is the harmonized ANCE, CSA Group, and UL standard for Low-Voltage Switchgear and Controlgear - Part 7-4: Ancillary Equipment - PCB Terminal Blocks for Copper Conductors. It is the First edition of NMX-J-538/7-4-ANCE, CAN/CSA-C22.2 No. 60947-7-4, and UL 60947-7-4.


      This harmonized standard is based on IEC Publication 60947-7-4: Edition 1 (2013), Low-voltage switchgear and controlgear - Part 7-4: Ancillary equipment - PCB terminal blocks for copper conductors, issued August 2013. IEC 60947-7-4 is copyrighted by the IEC.


      This harmonized standard was prepared by the Association of Standardization and Certification (ANCE), CSA Group, and Underwriters Laboratories Inc. (UL). The efforts and support of the Technical Harmonization Subcommittee, THSC 121A WG5, of the Council on the Harmonization of Electrotechnical Standards of the Nations of the Americas (CANENA), are gratefully acknowledged.


      This standard is considered suitable for use for conformity assessment within the stated scope of the standard.


      The Mexican Standard was developed by the CT PIE-A from the Comite de Normalizacion de la Asociacion de Normalizacion y Certificacion, A.C., CONANCE, with the collaboration of the manufacturers and users.


      This standard was reviewed by the CSA Subcommittee on Terminal Assemblies, under the jurisdiction of the CSA Technical Committee on Industrial Products and the CSA Strategic Steering Committee on Requirements for Electrical Safety, and has been formally approved by the CSA Technical Committee.


      This standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.


      This standard has been approved by the American National Standards Institute (ANSI) as an American National Standard.


      Scope


      This part of IEC 60947 specifies requirements for PCB terminal blocks primarily intended for industrial or similar use.


      Mounting and fixing on the printed circuit board is made by soldering, press-in or equivalent methods to provide electrical and mechanical connection between copper conductors and the printed circuit board.


      This standard applies to PCB terminal blocks intended to connect copper conductors, with or without special preparation, having a cross-section between 0,05 mm2 and 300 mm2 (AWG 30/600 kcmil), intended to be used in circuits of a rated voltage not exceeding 1 000 V a.c. up to 1 000 Hz or 1 500 V d.c.


      NOTE 1 Large cross section terminal blocks are dedicated to specific design of high current PCBs. The range up to 300 mm2 is kept to cover any possible application. Examples of high current PCBs and PCB terminal blocks are shown in Annex C.


      NOTE 2 AWG is the abbreviation of American Wire Gage (Gage (US) = Gauge (UK));


      kcmil = 1 000 cmil;


      1 cmil = 1 circular mil = surface of a circle having a diameter of 1 mil;


      1 mil = 1/1 000 inch.


      This standard may be used as a guide for special types of PCB terminal blocks with components, such as disconnect units, integrated cartridge fuse-links and the like.


      If applicable, in this standard the term clamping unit is used instead of terminal. This is taken into account in case of references to IEC 60947-1.


      1.1DV D2 Modification by adding the following:


      1.1DV.1 This standard also applies to terminal blocks that have insulation piercing or displacement clamping units.


      1.1DV.2 The wire range for terminal blocks covered by this standard include 0,051 mm2 to 300 mm2 (30 AWG to 600 kcmil) copper conductors and 3,31 mm2 to 300 mm2 (12 AWG to 600 kcmil) aluminum conductors. See Annex DVA for aluminum requirements.


      In Mexico, 3,31 mm2 (12 AWG), 5,26 mm2 (10 AWG), and 8,37 mm2 (8 AWG) aluminum conductors are not allowed.


      1.1DV.3 The voltage range includes up to 1500 Vac and 1500 Vdc.

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      CSA C22.2 NO. 60947-7-4:18 (R2022)

      Low-voltage switchgear and controlgear — Part 7-4: Ancillary equipment — PCB terminal blocks for copper conductors (Trinational standard with NMX-J-538/7-4-ANCE and UL 60974-7-4)

      Active
      English

      CSA C22.2 NO. 60947-7-4:F18 (C2022)

      Appareillage à basse tension — Partie 7-4 : Matériels accessoires — Blocs de jonction pour cartes de circuits imprimés pour conducteurs en cuivre (norme trinationale avec NMX-J-538/7-4-ANCE et UL 60947-7-4)

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      French
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