UL 4248-19 PDF

1 Scope

1.1 This Part is intended to be read together with the Standard for Fuseholders – 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 Fuseholders – Part 1: General Requirements, NMX-J-009-4248/1-ANCE / CSA C22.2 No. 4248.1 / UL 4248-1.

1.2 This Part applies to Fuseholders for Photovoltaic (PV) Systems rated up to 15002000 Vdc.

1.3 This Part applies to PV fuseholders that accommodate PV fuses as described in the Standard for Low-Voltage Fuses – Part 19: Photovoltaic Fuses, NMX-J-009/248/19-ANCE / CSA C22.2 No. 248.19 / UL 248-19 to be employed in Photovoltaic (PV) systems and that are intended to be used in accordance with the Canadian Electrical Code, Part I, CSA C22.1, the National Electrical Code, NFPA 70, and the Mexican Electrical Code, NOM-001.

1.4 Fuseholders that meet another Part also need to comply with those requirements of that Part.

Summary of Topics

This revision of ANSI/UL 4248-19 dated November 25, 2024 includes changes in requirements to the Scope and the requirements to include the maximum voltage rating for PV systems: 1.2, 5.1, 6.1, 7.2, and 8.1.

As noted in the Commitment for Amendments statement located on the back side of the title page, ULSE, CSA, and ANCE are committed to updating this harmonized standard jointly.