前言这是低压熔断器的协调NCE、CSA组和UL标准-第13部分:半导体熔断器。它是NMX-J-009/248/13-ANCE的第二版，CSA C22.2第248.13号的第三版，以及UL 248-13的第三版。本版NMX-J-009/248/13-ANCE取代2000年出版的第一版。本版CSA C22.2 No.248.13取代2000年出版的第二版。本版UL 248-13取代2000年出版的第二版。本协调标准由标准化与认证协会（ANCE）、CSA集团和美国保险商实验室有限公司（UL）编制。非常感谢技术协调小组委员会32B保险丝、保险丝座在美洲国家（CANENA）电工标准协调方面所做的努力和提供的支持。 本标准被认为适用于本标准规定范围内的合格评定。本墨西哥标准由康奈斯市A.C.标准化委员会TC 32熔断器在熔断器制造商和用户的合作下制定。本标准由CSA保险丝和保险丝座小组委员会审查，并由CSA电气安全要求战略指导委员会管辖下的CSA工业产品技术委员会批准。本标准是根据加拿大标准委员会对加拿大国家标准的要求制定的。 CSA集团已将其发布为加拿大国家标准。范围1.1本部分拟与低压熔断器标准-第1部分:一般要求（以下简称第1部分）一起阅读。本部分中条款的标题与第1部分中标题类似的条款相对应。除非本部分修改，否则第1部分的要求适用。关于第1部分的要求，请参阅低压熔断器标准-第1部分:一般要求，NMX-J-009-248/1-ANCE/CSA C22.2第248.1号/UL 248-1.1.2本部分适用于额定电压为2000 Vac或以下的半导体熔断器。直流额定值是可选的。注:加拿大电气规范第一部分CSA C22.1将低压定义为任何超过30 V但不超过1000 V（含30 V）的电压，将高压定义为任何超过1000 V的电压。 国家电气规范NFPA 70将高压定义为标称电压大于600 V。

PrefaceThis is the harmonized ANCE, CSA Group, and UL Standard for Low-Voltage Fuses - Part 13: Semiconductor Fuses. It is the second edition of NMX-J-009/248/13-ANCE, third edition of CSA C22.2 No. 248.13, and the third edition of UL 248-13. This edition of NMX-J-009/248/13-ANCE supersedes the first edition published in 2000. This edition of CSA C22.2 No. 248.13 supersedes the second edition published in 2000. This edition of UL 248-13 supersedes the second edition published in 2000. 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, 32B, Fuses, Fuseholders, 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 present Mexican Standard was developed by the TC 32 Fuses from the Comite de Normalizacion de la Asociacion de Normalizacion y Certificacion, A.C., CONANCE, with the collaboration of the fuse manufacturers and users.This Standard was reviewed by the CSA Subcommittee on Fuses and Fuseholders and approved by the CSA Technical Committee on Industrial Products under the jurisdiction of the CSA Strategic Steering Committee on the Requirements for Electrical Safety. This standard has been developed in compliance with the Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.Scope1.1 This Part is intended to be read together with the Standard for Low-Voltage Fuses - Part 1: General Requirements, hereafter referred to as Part 1. The titles of the Clauses in this Part correspond to the similarly titled Clauses in Part 1. The requirements of Part 1 apply unless modified by this Part. For the Part 1 requirements, refer to the Standard for Low-Voltage Fuses - Part 1: General Requirements, NMX-J-009-248/1-ANCE / CSA C22.2 No. 248.1 / UL 248-1.1.2 This Part applies to semiconductor fuses rated 2000 Vac or less. DC ratings are optional.NOTE: CSA C22.1, Canadian Electrical Code, Part I, defines low voltage as any voltage exceeding 30 V but not exceeding 1000 V inclusive and high voltage as any voltage exceeding 1000 V. The National Electrical Code, NFPA 70, defines high voltage as more than 600 V, nominal.