This is the harmonized ANCE, CSA Group, and UL standard for Fuseholders - Part 12: Class R. It is the second edition of NMX-J-009/4248/12-ANCE, the second edition of CAN/CSA-C22.2 No. 4248.12, and the second edition of UL 4248-12. This edition of CAN/CSA-C22.2 No. 4248.12 supersedes the previous edition published on February 28, 2007. This edition of UL 4248-12 supersedes the previous edition published on February 28, 2007.
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 Part is intended to be read together with the Standard for Fuseholders – Part 1: General Requirements, hereafter referred to as Part 1. The numbering of the Clauses in this Part corresponds to like numbered Clauses in Part 1. The requirements of Part 1 apply unless modified by this Part. For Clauses not shown below, refer to the Standard for Fuseholders – Part 1: General Requirements, NMX-J-009-4248-ANCE, CSA C22.2 No. 4248.1, UL 4248-1.
These requirements cover fuseholders intended for use with Class R Fuses as described in NMX-J-009/248/12-2000-ANCE, CSA C22.2 No. 248.12, UL 248-12, Low-Voltage Fuses – Part 12: Class R Fuses.