前言这是低压开关设备和控制设备的协调ANCE、CSA集团和UL标准-第7-4部分:辅助设备-铜导线的PCB接线板。它是NMX-J-538/7-4-ANCE、CAN/CSA-C22的第一版。2号60947-7-4和UL 60947-7-4。本协调标准基于2013年8月发布的IEC出版物60947-7-4:第1版（2013），《低压开关设备和控制设备-第7-4部分:辅助设备-铜导体PCB接线板》。IEC 60947-7-4的版权归IEC所有。范围IEC 60947的本部分规定了主要用于工业或类似用途的PCB接线板的要求。通过焊接、压入或等效方法在印刷电路板上安装和固定，以在铜导线和印刷电路板之间提供电气和机械连接。 本标准适用于用于连接铜导线的PCB接线板，无论是否经过特殊处理，其横截面在0.05 mm2至300 mm2（AWG 30/600 kcmil）之间，用于额定电压不超过交流1000 V、频率不超过1000 Hz或直流1500 V的电路。注1大截面接线板专用于大电流PCB的特定设计。最大范围为300 mm2，以覆盖任何可能的应用。附录C中显示了大电流PCB和PCB接线板的示例。注2 AWG是“美国线规”（Gage（US）=Gage（UK））的缩写；kcmil=1000 cmil；1 cmil=1圆形密耳=直径为1密耳的圆的表面；1密耳=1/1000英寸。本标准可作为带有组件的特殊类型PCB接线板的指南，如断开装置、集成盒式保险丝- 链接等等。如果适用，本标准中使用术语“夹紧装置”代替“端子”。如果参考IEC 60947-1，则应考虑到这一点。1.1DV D2通过添加以下内容进行修改:1.1DV。1本标准也适用于带有绝缘穿孔或位移夹紧装置的接线板。1.1DV。2本标准涵盖的接线板的导线范围包括0051 mm2至300 mm2（30 AWG至600 kcmil）铜导线和3,31 mm2至300 mm2（12 AWG至600 kcmil）铝导线。铝要求见附录DVA。在墨西哥，不允许使用3,31 mm2（12 AWG）、5,26 mm2（10 AWG）和8,37 mm2（8 AWG）铝导线。1.1DV。3电压范围包括高达1500伏交流电和1500伏直流电。

PrefaceThis 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.ScopeThis 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.