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3UA THERMAL RELAY

APPLICATIONS
3UA series thermal relay is suitable for using in power system with AC 50HZ, rated operation voltage up to 660V and 1000V, in main circuit, current form 0.1A to 630A. It is used to protect AC three-phase asynchronous motor against overload and open-phase. The relays have the test push-button for breaking NC contacts and the operating indication and free trip characteristics. The products also can be supplied with protecting case to ensure safety. The products can be plugged in the contactor and installed independently or mounted by rail.
SPECIFICATION

Type

Rated operating current(A)

Rated insulation voltage(V)

Current setting range(A)

3UA50

12.5

660

0.1-0.16

0.16-0.25

0.25-0.4

0.32-0.63

0.63-0.1

0.8-1.25

1-1.6

1.25-2

1.6-2.5

2-3.2

2.5-4

3.2-5

4-6.3

5-8

6.3-10

8-1.25

3UA52

25

660

0.1-0.16

0.16-0.25

0.25-0.4

0.4-0.63

1.63-1

0.8-1.25

1-1.6

1.25-2

1.6-2.5

2-3.2

2.5-4

3.2-5

4-6.3

5-8

6.3-10

8-12.5

10-16

12.5-20

16-25

 

3UA54

32

660

4-6.3

6.3-10

10-16

12.5-20

16-25

20-32

3UA58

80

1000

16-25

20-32

25-40

32-50

40-57

50-63

57-70

63-80

3UA59

63

660

0.1-0.16

0.16-0.25

0.25-0.4

0.4-0.63

1.63-1

0.8-1.25

1-1.6

1.25-2

1.6-2.5

2-3.2

2.5-4

3.2-5

4-6.3

5-8

6.3-10

8-12.5

10-16

12.5-20

16-25

20-32

25-40

32-45

40-57

50-63

3UA62

180

660

55-80

63-90

80-110

90-120

110-35

120-150

135-160

150-180

3UA66

400

1000

80-125

125-200

180-250

200-320

250-400

 

3UA68

630

1000

320-500

400-630

 
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