GB 21518-2022: Minimum allowable values of energy efficiency and energy efficiency grades for AC contactors

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Scope

This document specifies the energy efficiency grades, minimum allowable values of energy
efficiency, sampling, test and calculation methods for AC contactors (hereinafter referred to as
contactors).
This document is applicable to three-pole electromechanical, direct-acting integral contactors
with a rated frequency of 50 Hz, a rated operating voltage of the main circuit of 1,000 V and
below, a rated operating current of 6 A ~ 630 A, a rated control power supply voltage of the
contactors of AC 440 V and below, and an application category of AC-3.
This document does not apply to household and similar-purpose contactors with external
power-saving devices and semi-conductor contactors (solid-state contactors).
NOTE: the “direct-acting” type described in this document refers to products in which both the
contact system and the electromagnetic system are direct-acting.

Basic Data

Standard ID	GB 21518-2022 (GB21518-2022)
Description (Translated English)	Minimum allowable values of energy efficiency and energy efficiency grades for AC contactors
Sector / Industry	National Standard
Classification of Chinese Standard	F01
Classification of International Standard	27.010
Word Count Estimation	6,669
Date of Issue	2022-12-29
Date of Implementation	2024-01-01
Older Standard (superseded by this standard)	GB 21518-2008
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration