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Thermal Overload Relays (3UA)

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 JRS2 Thermal Overload Relays (3UA)


 

3UA thermal relay is suitable for A.C.50/60Hz, voltage up to 690-1000V and current up to 630A, general AC motor of long or discontinuous long operation, used as overload protection and has the functions of breaking phase protection, temperature compensation, and trip indication. It can automatically and manually get back. It can be fixed with contactor together, also be indecently fixed. The product conforms to GB1448.4, IEC60947-4 & VDE0660 standards.


Technical parameter

 

Type Number Setting range(A) For contactor
3UA50 0A 0.1~0.16 3TB40
3TF40
3TB41
0C 0.16~0.25
0E 0.25~0.4
0G 0.4~0.63
0J 0.63~1
0K 0.8~1.25
1A 1~1.6
1B 1.25~2
1C 1.6~2.5
1D 2~3.2
1E 2.5~4
1F 3.2~5
1G 4~6.3
1H 5~8
1J 6.3~10
1K 8~12.5
2S 10~14.5
3UA52 0A 0.1~0.16 3TB42
3TB43
3TF42
0C 0.16~0.25
0E 0.25~0.4
0G 0.4~0.63
0J 0.63~1
0K 0.8~1.25
1A 1~1.6
1B 1.25~2
1C 1.6~2.5
1D 2~3.2
1E 2.5~4
1F 3.2~5
1G 4~6.3
1H 5~8
1J 6.3~10
1K 8~12.5
2A 10~16
2B 12.5~20
2C 16~25
3UA54 1G 4~6.3 3TB44
1J 6.3~10
2A 10~16
2B 12.5~20
2C 16~25
2D 20~32
2Q 25~36
3UA55 0A 0.1~0.16 3TF35
3TF45
3TD45
0C 0.16~0.25
0E 0.25~0.4
0G 0.4~0.63
0J 0.63~1
0K 0.8~1.25
1A 1~1.6
1B 1.25~2
1C 1.6~2.5
1D 2~3.2
1E 2.5~4
1F 3.2~5
1G 4~6.3
1H 5~8
1J 6.3~10
1K 8~12.5
2A 10~16
2B 12.5~20
2C 16~25
2D 20~32
2Q 25~36
2R 32~40
8M 36~45


 

Type Number Setting range(A) For contactor

3UA60

2H

55~80

3TB50
3TF48
3TF51

2W

63~90

2X

80~110

3H

90~120

3J

110~135

3UA61

2H

55~80

3TF51
3TE52

2W

63~90

2X

80~110

3H

90~120

3J

110~135

3K

120~150

3UA62

2H

55~80

3TB50
3TB52
3TF50
3TF53

2W

63~90

2X

80~110

3H

90~120

3J

110~135

3K

120~150

3L

135~160

3M

150~180

3UA66

2K

80~125

3TB54
3TB56
3TE56

2B

125~200

3C

160~250

3D

200~320

3E

250~400

3UA68

3F

320~500

3TB56 3TB58

3G

400~630


Dimension

3UA50

 

Dimension


3UA59

 

 

 

 

Dimension


3UA52
 

Dimension


3UA54

 

Dimension


3UA58
 

Dimension


3UA62 
 

Dimension




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