JBC3(3TB44) AC contactor

Short Description:

JBC3 series AC contactors (hereinafter referred to as contactors) are suitable forAC 50HZ (60HZ), rated voltage to 660V, rated working current to 475A power line when rated voltage is 380V under AC-3, for long-distance contact and sectional circuit, for frequent start-up and disconnection of squirrel cage motor, and for appropriate heat. Overload relays form electromagnetic starters to protect possible overload circuits. JBC3 series reversible contactor is formed after adding mechanical interlocking mechanism, which can control the starting, stopping and reversing of motor.
This series of contactors conform to GB1408.4 and JB/T7435 standards. Its shape size and installation size are the same as those of3TB and 3TF series contactors produced by Siemens.


Product Detail

Product Tags

Type and Signification

jbc3-type

① Contactor Series Code

② Basic specification code: rated working current at 380V underAC-3

③ Number and Combination Form ofAuxiliary Contacts

④ Derived code N denotes interlocking contactor

⑤ Z denotes DC operation

Application Range
JBC3 series AC contactors (hereinafter referred to as contactors) are suitable forAC 50HZ (60HZ), rated voltage to 660V, rated working current to 475A power line when rated voltage is 380V under AC-3, for long-distance contact and sectional circuit, for frequent start-up and disconnection of squirrel cage motor, and for appropriate heat. Overload relays form electromagnetic starters to protect possible overload circuits. JBC3 series reversible contactor is formed after adding mechanical interlocking mechanism, which can control the starting, stopping and reversing of motor.
This series of contactors conform to GB1408.4 and JB/T7435 standards. Its shape size and installation size are the same as those of3TB and 3TF series contactors produced by Siemens.

Normal working and installation conditions
• The ambient air humidity is-50C} +400C, and the average value in 24 hours is not more than+350C.
• Elevation: Installation site not exceeding 2000 m above sea level.
• Atmospheric conditions: the relative humidity of air is not more than 50% when it is +400C. Higher relative humidity can be allowed at lower temperature and humidity. For example, at 200C, the appropriate humidity can be up to 90%. Special measures should be taken for the occasional condensation caused by temperature changes.
• Pollution grade: The pollution grade of installation site is 3.
• Installation Category: Installation Category of Contactors is Class III.
• Installation conditions: The inclination between the installation surface and the vertical surface of the contactor is not more than 5 degrees.
• Installation Site: Installation and use in places without significant shaking, shock or vibration.

Main Technical Parameter

Type

Forelgn models

Agreed heating current 1th A

Rated worklng Currentle A

AC-3 Controllable Motor Maximum Power Ptkw

AC-3

AC-4

220v

380v

660v

380v

660v

220v

380v

660v

JBC3-9(Z)

3TB-40

20

9

9

7.2

3.3

1.4

2.2

4

4

JBC3-12(Z)

3TB-41

20

12

12

9.5

4.3

1.9

3

5.5

5.5

JBC3-16(Z)

3TB-42

30

16

16

13.5

7.7

3.5

4

7.5

7.5

JBC3-22(Z)

3TB-43

30

22

22

13.5

8.5

4

7.5

11

11

JBC3-32

3TB-44

45

32

32

18

12

7.5

8.5

15

15

JBC3-45

3TB-46

70

45

45

45

24

12

15

22

22

JBC3-63

3TF47

70

63

63

63

28

14

18.5

30

30

JBC3-75

3TF48

90

75

75

75

34

17

22

37

37

JBC3-85

3TF49

90

85

85

75

42

21

26

45

45

JBC3-110

3TF50

150

110

110

110

54

27

37

55

55

JBC3-140

3TF51

150

140

140

110

68

35

44

75

75

JBC3-170

3TF52

180

170

170

170

75

42

55

90

90

JBC3-205

3TF53

220

205

205

170

92

49

64

110

110

J BC3-250

3TF54

300

250

250

250

112

60

75

132

132

JBC3-300

3TF55

300

300

300

250

135

72

93

160

160

JBC3-400

3TF56

500

400

400

400

180

96

115

200

200

JBC3-475

3TF57

500

475

475

400

214

114

145

250

250

Shape size, installation size and flying arc distance

jbc301

Type

Shape size

Installation dimensions)

Flying Arc Distance

A

B

C

a

b

N-φd

10

JBC3-9, 12

46

79

106

35

60

2-φ4.8

JBC3-9/Z, 12/Z

46

79

112

35

60

JBC3-16, 22

46

89

116

35

75

2-φ4.8

JBC3-16/Z, 22/Z

46

89

148

35

75

JBC3-32

74

90

109

50

75

2-φ5.0

JBC3-45, 63

92

120

125

70

100

12

JBC3-75, 83

105

135

145

80

110

2-φ5.5

JBC3-110, 140

125

158

155

100

130

2-φ6.5

30

JBC3-170, 205

140

185

190

110

160

2-φ7.0

JBC3-250, 300

145

200

198

120

180

4-φ10.5

50

JBC3-400, 475

160

200

222

130

180

4-φ10.5

Connection terminal marking and installation

jbc31
Material characteristics
·Pure copper coil: low heat generation, longer service life, and the pull-in voltage is between 85% and 110%.

·Silver alloy contacts: 4 sets of silver alloy contacts for greater load carrying capacity and greater electrical conductivity.

·32 pieces of silicon steel core, the suction is smoother, the heat dissipation is stronger, and the machine is not easy to heat for a long time.

191b6104


  • Previous:
  • Next:

  • Write your message here and send it to us