GB/T 14048.3-2025: Low-voltage switchgear and controlgear - Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination units

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Scope

This document applies to switches, disconnectors, switch-disconnectors and fuse-
combination units and their dedicated accessories to be used in distribution circuits and
motor circuits of which the rated voltage does not exceed 1000 V AC or 1500 V DC.
NOTE 1 Accessories are interconnecting units, extended terminals, internal coils, auxiliary contacts,
motor operator, etc. offered as options with the basic unit.
This document does not apply to equipment coming within the scope of IEC 60947-2,
IEC 60947-4-1 and IEC 60947-5-1.
Particular requirements for switches, disconnectors, switch-disconnectors and fuse-
combination units for use in photovoltaic (PV) DC applications are given in Annex D.
Specific requirements for LV switchgear intended for the connections of aluminium
conductors are given in Annex E.
Guidance on measurement of power loss is provided in Annex F.
This document does not include the additional requirements necessary for electrical
apparatus for explosive gas atmospheres.
NOTE 2 Depending on its design, a switch (or disconnector) can be referred to as "a rotary switch
(disconnector)", "cam-operated switch (disconnector)", "knife-switch (disconnector)", etc.
NOTE 3 In this document, the word "switch" also applies to the apparatus referred to in French as
"commutateurs", intended to modify the connections between several circuits and inter alia to
substitute a part of a circuit for another.
NOTE 4 In general, throughout this document, switches, disconnectors, switch-disconnectors and
fuse-combination units will be referred to as "equipment".
The object of this document is to state.
a) the characteristics of the equipment;
b) the conditions that apply to the equipment with reference to.

Basic Data

Standard ID	GB/T 14048.3-2025 (GB/T14048.3-2025)
Description (Translated English)	Low-voltage switchgear and controlgear - Part 3: Switches��disconnectors��switch-disconnectors and fuse-combination units
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	K30
Classification of International Standard	29.120.40
Date of Issue	2025-10-31
Date of Implementation	2026-05-01
Older Standard (superseded by this standard)	GB/T 14048.3-2017