1 Scope

1.1 These fuseholders and devices accommodate fuses to be employed in electrical circuits and are intended to be used in accordance with the Canadian Electrical Code, Part I (CE Code Part I), CSA C22.1, the National Electrical Code, NFPA 70, or the Mexican Electrical Code, NOM-001.

1.2 These requirements cover:

1. a) Fuseholders for fuses intended for use with fuse classes covered in the ANCE NMX-J-009-248; CSA C22.2 No. 248; and UL 248 series of standards, Parts 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 and 15; and

2. b) Fuseholder accessories (such as covers, indicators, adapters, etc.).

Summary of Topics

This Third Edition of ANSI/UL 4248-1, the Standard for Fuseholders – Part 1: General Requirements dated March 31, 2022 incorporates editorial updates including renumbering and reformatting to align with current style.