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IEC 60269-1:2024

IEC 60269 1 2024

IEC 60269-1:2024 / Low-voltage fuses - Part 1: General requirements

ID 22520 | 06.09.2020 / Preview attached

IEC 60269-1:2024
Low-voltage fuses - Part 1: General requirements

IEC 60269-1:2024 is applicable to fuses incorporating enclosed current-limiting fuse-links with rated breaking capacities of not less than 6 kA, intended for protecting power-frequency AC circuits of nominal voltages not exceeding 1 000 V or DC circuits of nominal voltages not exceeding 1 500 V.
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IEC 60269-1 has been prepared by subcommittee 32B: Low-voltage fuses, of IEC technical committee 32: Fuses. It is an International Standard.

This fifth edition cancels and replaces the fourth edition published in 2006, Amendment 1:2009 and Amendment 2:2014. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:

a) New numbering, editorial corrections and normative references updated;
b) Term "discrimination" replaced by "selectivity" and "utilization category" by "utilization class";
c) Term "fuses for authorized and unskilled persons" updated;
d) Replacement of fuse-link added;
e) Standard values for AC and DC voltages updated;
f) Rated currents 425A, 355A, and 1 600A added;
g) Marking: requirements and tests separated to the relevant subclauses;
h) Requirements for temperature rise limited to terminal temperature rise only;
i) Graphic symbol for fuse-base updated,

IEC 60269 consists of the following parts, under the general title Low-voltage fuses:

Part 1: General requirements
Part 2: Supplementary requirements for fuses for use by authorized persons (fuses mainly for industrial application) – Examples of standardized systems of fuses A to I
Part 3: Supplementary requirements for fuses for use by unskilled persons (fuses mainly for household or similar application) – Examples of standardized systems of fuses A to F
Part 4: Supplementary requirements for fuse-links for the protection of semiconductor devices
Part 5: Guidance for the application of low-voltage fuses
Part 6: Supplementary requirements for fuse-links for the protection of solar photovoltaic energy systems
Part 7: Battery Fuses

For reasons of convenience, when a part of this publication has come from other publications, a remark to this effect has been inserted in the text.

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