ICS 27.010  
F 01 
 
National Standards of the 
People’s Republic of China  
GB ×××× —200× 
 
 
Minimum allowable values of energy efficiency and energy 
efficiency grades for AC Contactors  
(Draft for approval)  
 
 
 
 
 
 
Issue Date: 200×-××-××                         Implemented on: 200×-××-×× 
Issued by the General Administration of Quality Supervision, Inspection and 
Quarantine of the People’s Republic of China and the China National 
Standardisation Management Commission  
GB ××××—200× 
Preface  
It should be noted that Clause 4.3 of this Standard is mandatory whilst the rest are 
recommended.  
 
This Standard has been prepared and put forward by the National Standardisation Management 
Commission . 
This standard is under the jurisdictio n of the Reasonable Power Consumption Committee under 
the National Energy Saving Foundation and Management Standardisation Technical Commission.  
The units involved in preparing this Standard include the Beijing energy conservation & 
Environmental Protectio n Center, China Standardisation Institute, China Power Scientific 
Institute, Mechanical energy conservation Center, Jiangsu Zhaol ong Electrical Ltd, and Henan 
Province Songf eng Electrical Ltd.  
This Standard was drafted by the following chief committee mem bers: Tao -Yi,  
Zhao Yao -Jin, Deng Hong -Fen, Zhai Ke -Jun, Liu  Ying-Zhou, He  Zhao -Long, and  
Gao Song -Feng. GB ×××× —200× 
AC Contactor Energy Efficiency Minimum Allowable Values and Energy 
Efficiency Grades  
1 Scope  
This Standard specifies the minimum allowable energy efficiency values for AC Contactors 
(hereafter ‘Contactor’), energy conservation evaluation values, energy efficiency grades 
and testing methods.  
This Standard also applies to contactors with a rated fr equency of 50Hz, a rated working 
voltage below 1140V, and a rated working current of 9A~630A.  
However, this standard does not apply to contactors fitted with external power -saving 
devices or to semiconductor contactors (solid contactors).  
2 Normative Refe rences:  
The provisions of the following documents become provisions of this Standard after being 
referenced. For dated reference documents, all later amendments (excluding corrigenda) and 
versions do not appl y to this Standard; however, the parties to the agreement are encouraged 
to study whether the latest versions of these documents are applicable. For undated reference 
documents, the latest versions apply to this Standard.  
GB/T 14048.1: Low Voltage Switch & Control Equipment – General (2000 eqv    
IEC 60947 -1:1999)  
GB 14048.4: Lower Voltage Switch & Control Equipment – LV Electrical 
Contactor and Motor Actuator (2003 IEC 60947 -4-1:2000 IDT).  
3   Technical Terms and Definitions  
The following technical terms and definitions apply to this Standard.  
3.1 Holding power  
The current power (VA) consumed by the Contactor under holding mode.  
3.2 Minimum allowable values of energy efficiency for AC Contactors  
The maximum allowable holding power (VA) values of the Contac tor when tested under the 
conditions set out in this Standard.  
3.3 Evaluating values of energy conservation for AC Contactors  
The maximum allowable holding power (VA) values of the Contactor that meets energy -
saving certification when tested under the cond itions set out in this Standard.  4 Technical Requirements  
4.1 Basic Requirements  
Performance and safety of the Contactor shall meet the requirements set out in GB/T 14048.1 
and GB 14048.4.  
4.2 Energy Efficiency Grades  of the Contactor  
The energy efficiency of the Contactor shall be divided into three grades, of which Grade 1 
holding power (VA) is the lowest. The holding power (VA) of each grade of Contactor shall 
not exceed the requirements listed in Table 1.  
Table 1: Contactor Energy E fficiency Grades  
Holding Power VA Rated Working Current 
le (A)  Grade 1  Grade 2  Grade 3  
9 Ie 12 0.5 5.0 8.3 
12 < Ie 22 0.5 5.1 8.5 
22 <Ie 32 0.5 8.3 13.9 
32 <Ie 40 0.5 11.4 19.0 
40 <Ie 63 0.5 34.2 57.0 
63 <Ie 100 1.0 36.6 61.0 
100 <Ie 160 1.0 51.3 85.5 
160 <Ie 250 1.0 91.2 152.0  
250 <Ie 400 1.0 150.0  250.0  
400 <Ie 630 1.0 150.0  250.0  
 
4.3 Minimum Allowable Values of Contactor Energy Efficiency  
The holding power (VA) of the Contactor shall not exceed the Grade 3 requirements 
specified in Table 1.  
4.4 Contactor Energy Saving Evaluation Values  
The holding power (VA) of the Contactor shall not exceed the Grade 2 requirements 
specified in Table 1.  
5 Test Methods  
5.1 Apply the rated working voltage onto the Contactor coil. Upon reaching heat stabilising 
mode, measure the holding power (VA) of the Contactor under closing mode. Fig. 1 shows 
the Contactor Test Wiring Diagram.  5.2 The accuracy of the volta ge meter and ampere meter used for measuring shall be Grade 0.2, 
and the measured holding power (VA) figures shall be rounded off to 1 decimal point.  
5.3 If the power waveform belongs to non -sinusoidal wave, then the true value or electrical 
instrument sha ll be used.  
 
T 
 
 
 
T-Voltage Regulator; V -Voltage Meter; A -Ampere Meter;  
CJ-AC Contactor Wiring Diagram  
Fig. 1: Test Wiring Diagram  
CJ T A 
V