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Main Use Purpose and Application Scope

NQ2 series electromagnetic starter (hereinafter referred to as starter) is mainly used in electric circuits 

with AC frequency of 50Hz (or 60Hz), rated operating voltage up to 660V and rated operating current up to 
68A  for  controlling  the  direct  start  and  stop  of  electric  motor.  Starter  with  thermal  overload  relay 
(hereinafter  referred  to  as  thermal  relay)  can  be  used  to  protect  the  overload  and  phase  loss  of  electric 
motor. 

Key Technical Parameters

01

NQ2 Series Electromagnetic Starter

Table 1 Ambient Conditions

Ambient temperature (℃) 

Hot and humid atmospheric conditions

Altitude

Pollution class/installation category

-

5℃~+40℃, average temp. not exc35℃ within 24h

+40℃, RH not exceeding 50% and may reach 90% at +20℃

No influence below 2,000m

Class 3/

Table 2 Key Technical Parameters of Starter (I)

AC-3

660V

380V

220V

Model

Conventional 

free air 

thermal 

current of 

shell frame, 

Ith (A)

Rated 

operating 

current 
of shell 

frame,

 Ie (A)

Rated power control of 

shell frame, Pe (kW)

AC 

contactor 

model 

assembed

Thermal 

relay 

model 

assembled

Setting 
current 

range of 

thermal 

relay (A)

Button 
type of 
starter 

with 

button

0.1~0.16

0.16~0.25

0.25~0.4

0.4~0.63

0.63~1

1~1.6

1.25~2

1.6~2.5

2.5~4

4~6

5.5~8

7~10

9~13

12~18

17~25

23~32

28~36

NQ2-15

□/

1

NQ2-15

□/

2

NQ2-15

□/

3

NQ2-15

□/

4

13

18

25

36

12

18

25

32

7.5

10

15

18.5

5.5

7.5

11

15

3

4

5.5

7.5

NC1-12

NC1-18

NC1-25

NC1-32

NR2-25

NR2-36

NP2-EA31

(start)

NP2-EA42

(stop)

Summary of Contents for NQ2 Series

Page 1: ...NO 2020 04 Standard IEC EN 60947 4 1 User Instruction NQ2 Series Electromagnetic Starter ...

Page 2: ...n and maintenance Installation in any damp condensed phase environment with inflammable and explosive gas is forbidden When the product is being installed or maintained the power must be switched off You are prohibited from touching the conductive part when the product is operating ...

Page 3: ...Altitude Pollution class installation category 5 40 average temp not exceeding 35 within 24h 40 RH not exceeding 50 and may reach 90 at 20 No influence below 2 000m Class 3 Ⅲ Table 2 Key Technical Parameters of Starter I AC 3 660V 380V 220V Model Conventional free air thermal current of shell frame Ith A Rated operating current of shell frame Ie A Rated power control of shell frame Pe kW AC contac...

Page 4: ...le 3 Key Technical Parameters of Starter II Model Use type Rated insulation voltage Ui V Rated impluse withstand voltage Uimp kV NQ2 15 1 4 NQ2 15N 1 4 NQ2 15NB 1 4 NQ2 15P 1 4 NQ2 33 1 2 NQ2 33P 1 2 85 110 Us 20 75 Us 50 IP40 Eight hour duty Uninterrupted duty Intermittent periodic duty Main circuit AC 3 AC 4 auxiliary circuit AC 15 690 6 1200 300 600 300 50 10 100 20 1000 50 10 100 600 100 AC 3 ...

Page 5: ...re Installation size D E 116 207 127 60 150 176 207 127 130 150 176 207 127 130 150 116 207 138 60 150 167 296 162 105 205 167 296 172 105 205 3 6 See Fig 1 Φ 3 6 See Fig 2 Φ 4 6 2 See Fig 3 Φ 4 6 2 See Fig 4 Φ n A D C B E B C A D n φ E φ Figure 1 Outline and installation size of NQ2 15 15N 15NB Figure 2 Outline and installation size of NQ2 15P Figure 3 Outline and installation size of NQ2 33 Figu...

Page 6: ...set button Test button 2 T1 98 97 96 95 NC NO 4 T2 6 T3 Reference point Manual reset Automatic reset Figure 5 Panel layout of the thermal relay 3 Starter wiring diagram When the product leaves the factory the control circuits are wired on the premises that the voltage of the starter is the same as that of the main circuit Once the main circuit is powered on the starter can operate without addition...

Page 7: ...g screws clockwise Figure 10 Starter installation diagram Note 1 The connecting wires of the incoming and outgoing lines of the main circuit must be single core PVC insulated copper cables with prefabricated terminal whose cross sectional area is specified in Table 5 the cross sectional area of connecting wires of the auxiliary circuit should be 1mm Tighten all the screws during wiring to prevent ...

Page 8: ...prevent the product from being placed in an environment where there is strong shock or viberation Strong shock or viberation The motor start requires a certain interval with frequency no more than 30 times per hour Frequent starts of the motor Choose standard wires according to Table 5 The cross sectional area of connecting wires of the main circuit is too small The starter mis operates before bei...

Page 9: ...r IEC EN 60947 4 1 Check 18 07 NQ2 Series Electromagnetic Starter 5 Environmental Protection In order to protect the environment the product or product parts should be disposed of according to the industrial waste treatment process or be sent to the recycling station for assortment dismantling and recycling ...

Page 10: ...ctromagnetic Starter User Instruction Zhejiang Chint Electrics Co Ltd Add No 1 CHINT Road CHINT Industrial Zone North Baixiang Yueqing Zhejiang 325603 P R China E mail global sales chint com Website http en chint com ...

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