3UA Thermal Relay

3UA Thermal Relay 3UA -80

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3UA Thermal Relay  3UA -80

3UA Series Thermal Relay

1. Application

3UA thermal relay is suitable for AC 50/60HZ, voltage up to 660V 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 3TF together,also be independtly fixed. The product conforms to IEC60947-4-1 standard.

2. Motion Characteristic: Three-phase Balance Motion Time

No Times of the
setting current
Motion time Start condition Ambient
Temperature
1 1.05 >2h Cold state 20±5℃
2 1.2 <2h Heat state
(Following the NO.1 test)
3 1.5 ‹4min
4 7.2 10A 2S<Tp≦10S ≤63A Cold state
10A 4S<Tp≤10S >63A

3. Phase-losing Motion Characteristic

No Times of the setting current Motion time Start condition Ambient temperature
Any two phases Another phase
1 1 0.9 >2h Cold state 20±5℃
2 1.15 0 <2h Heat state
(Following the NO.1 test)

4. Specification

Type Number Setting range
(A)
For contactor
3UA-
12.5/Z
0A 0.1~0.16 3TF-09/12
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
Type Number Setting range
(A)
For contactor
3UA-25/Z 0A 0.1~0.16 3TF-16/22
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
Type Number Setting range
(A)
For contactor
3UA-
32/Z
1G 4~6.3 3TF-32
1J 6.3~10
2A 10~16
2B 12.5~20
2C 16~25
2D 20~32
2Q 25~36
3UA-
45/Z
0A 0.1~0.16 3TF-32
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
3UA-
80/Z
1G 4~6.3 3TF-45
3TF-63
3TF-75
3TF-85
8A 11~17
2B 12.5~20
2C 16~25
2D 20~32
2E 25~40
2F 32~50
2T 40~57
2P 50~63
2V 57~70
2U 63~80
8W 70~88
3UA-
63/F
0A 0.1~0.16 3TF-09-63
0C 0.16~0.25
0E 0.25~0.4
0G 0.4~0.63
0J 0.63~1
Type Number Setting range
(A)
For contactor
3UA-63/F 0K 0.8~1.25 3TF-09-63
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
2E 25~40
2M 32~45
2T 40~57
2P 50~63
3UA-135 2H 55~80 3TF-85/110
2W 63~90
2X 80~110
3H 90~120
3J 110~135
3UA-150 2H 55~80 3TF-140
2W 63~90
2X 80~110
3J 110~135
3K 120~150
3UA-180/F 2H 55~80 3TF-170/250
2W 63~90
2X 80~110
3H 90~120
3J 110~135
3K 120~150
3L 135~160
3M 150~180
3UA-400 2K 80~125 3TF-110~400
3B 125~200
3C 160~250
3D 200~320
3E 250~400
3UA-630 3F 320~500 3TF-400
3G 400~630
   
   

3UA Thermal Relay
3UA Thermal Relay
3UA Thermal Relay

Thermal Overload Relay.pdf

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