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3UA Thermal relay
3UA Thermal relay
 
Application
 
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, and trip inducation. It can automati cally and manually get back, phase protection, temperature compensation, and trip indication. It can automati cally and manually  get back. It can be fixed with contactor together, also be independtiy fixed. The  product comforms to GB14048.4, IEC60947-4 & VDE0660 stardands.
 
Type and
 
 
Motion Characteristic:Three-Phase Balance Motion Time
 
No.
Set current cinles Motion time
Start conidition
Temperature
4 1.05
%h
cold state
20±5℃
3 1.2
%h
heat state
Following the No.1 test)
2 1.5
%min
1 7.2
10A
2s%p≥0s
≥3A
cold state
10A
2s%p≥0s
%3A
 
Phase-losing motion characteristic
 
No.
Set current cinles
Motion
time
Start
conidition
Temperature
Arbitrary two phase Three Phase
1 1.0 0.9
%h
cold state 20±5℃
2 1.15 0 %h
heat state
(Following the
No.1 test)
 
Tripcharacteristic
 
Thermal relay manual reset time is ≥min or blow auto reset time is ≥min(Rated
current ≥3A) or ≥min (Rated current %3A)
 
Specificarions
 
Type Number Setting Range(A) Contavtor Insert
3UA-12/Z 0A
0.1~0.16
CJX1-9
CJX1-12
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) Contavtor Insert
3UA-25/Z
0A
0.1~0.16
CJX1-16
CJX1-22

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) Contavtor Insert
3UA-32/Z 1G
4~6.3
CJX1-32
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
CJX1-32
CJX1-38F
CJX1-38
0V
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
CJX1-45
CJX1-63
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
CJX1-9
CJX1-63
0C
0.16~0.25
0E
0.25~0.4
0G
0.4~0.63
0J
0.63~1
 
Type
Number
Setting Range(A)
Contavtor Insert
3UA Thermal relay
3UA-63/F
0K
0.8~1.25
CJX1-9
CJX1-63
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
 
2W
63~90
2X
80~110
3H
90~120
3J
110~135
3UA-150
2H
55~80
CJX1-140
2W
63~90
2X
80~110
3H
90~120
3J
110~135
3K
120~150
3UA-180/F
2H
55~80
CJX1-110
CJX1-170
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
CJX1-250
CJX1-400
3B
125~200
3C
160~250
3D
200~320
3E
250~400
3UA-630
3F
320~500
CJX1-400
CJX1-475
3G
400~630
 
 
 
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