Full Description

Preface

This is the harmonized ANCE, CSA Group, and UL standard for Low-Voltage Fuses – Part 1: General Requirements . It is the third edition of NMX-J-009/248/1-ANCE, the fourth edition of CSA C22.2 No. 248.1-22, and the fourth edition of UL 248-1. This edition of NMX-J-009-248/1-ANCE cancels the previous edition published in 2017. This edition of CSA C22.2 No. 248.1-22 supersedes the previous editions published in 1994, 2000, and 2011. This edition of UL 248-1 supersedes the previous edition published in 2017. This harmonized standard was prepared by the Association of Standardization and Certification, (ANCE), CSA Group and Underwriters Laboratories Inc. (UL). 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 CT 32 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, 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 the Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.

Scope

1.1 This Standard applies to low-voltage fuses rated 1000 V or less, AC and/or DC, with interrupting ratings up to 300 kA (200 kA for Mexico). These fuses are intended to be used in accordance with the Canadian Electrical Code, Part I, CSA C22.1, NOM – 001, Mexican Electrical Code, and the National Electrical Code, NFPA 70. 1.2 This Standard and its subsequent Parts establish the characteristics, construction, operating conditions, markings, and test conditions for each of the fuse classes so that initial investigation and follow-up verification can be performed in an orderly manner. The titles of the Clauses in this Part 1 correspond to the similarly titled Clauses in subsequent Parts.