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Contactor — 3TF Series Contactor
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Detailed description

Application

3TF series AC contactor is used for making and breaking, and for frequent starting and controlling the motor.3TF series AC contactor mainly used for making/breaking electric.CJX1/3TF series AC contactors are suitable for frequency 50/60Hz,rated insulation voltage up to1000V,rated operation current 9~475A under AC-3 duty.It is mainly used for making/breakingelectric circuit at a long distance & for frequent starting/stopping & with thermal relay to com-pose a magnetic motor starter.The product conforms to IEC60947-4-1 stardand.The contactor is a straight motion mechanism having double breaking contacts. The auxiliary contacts are arranged 2NO.2NC at most, it is employed the flexible locking connection between the contact support and core, three are no arcisolated panel in the Ie≤22A contactor. In the In≥32A contactors. Three are moulded arc-chute with arc-isolated panel, because all contacts are made of high cnonfusibility and against corrosion silver alloy. All series products can be mounted by screw, Ie≤32A contactor also by installation rail.


Specification

Type

3TF-9/12

3TF-16/22

3TF-32

   3TF-

   45/63

3TF-75/85

3TF-110/140

3TF-170/205

3TF-250/300

3TF-400/475

Conventional
thermal current(A)

20

30

45

80

100

160

210

300

400/550

Rated insulation
voltage(V)

660

660

660

1000

1000

1000

1000

1000

1000

Power of controllable motor(KW)
AC-3

380V

4/5.5

7.5/11

15

22/30

37/45

55/75

90/110

132/160

200/250

660V

5.5/7.5

11

23

39/55

67

100

156

235

375

Power of controllable motor(KW)
AC-4

380V

1.4/1.9

3.5/4

7.5

12/14

17/21

27/35

38/50

58/66

81

660V

2.4/3.3

6/6.6

13

20.8/24

29.5/36

46.9/60

66/86

100/114

140

Frequency of operation
(I/h)

AC-3

1000

750

750

1200/1000

1000/850

1000/750

700/500

700/500

500/420

AC-4

250

250

250

400/300

300/250

300/200

200/130

200/130

150

Operating voltage 
range of coil

(0.8-1.1)Ue

Rated operating
 current of auxiliary contacts(A)

AC15
380/220

6/10

6/10

4/6

4/6

4/6

4/6

4/6

4/6

4/6

DC13
220v

0.45

0.45

0.45

0.45

0.45

0.45

0.45

0.45

0.45

 

NORMALAUNNING AND INSTALLATION CONDITIONS

•Ambient air temperature:-5℃~+40℃, the average value should not exceed+35℃ within 24 hours. 

•Elevation:at most 2000m.

•Atmospheric conditions:When the temperature at 40, the relative humidity of atomsphere should be at the most 50%. When at relatively low temperatures, it could have higher relative humidity. Monthly maximum relative humidity could be not more than 90% . Special measures should be taken due to occurrence of dews.

•Class of pollution:Class 3

•Installation category: III

•Installation conditions:Degree of inclination between fitting surface and vertical surface should not exceed I

•Impact shock:Product should be installed and used in the place where often shakes and impacts.








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