Thermal Overload Relay

3UA

Model Reference

3UA543UA54
3UA583UA58
3UA503UA50
    Model Reference

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 hasthe functions of breaking phase protection, temperature compensation, and trip indication. It can automatically and manually get back. It can be fixed with contactor LC1 together, also beindependtly fixed.
  • The product conforms to IEC60947-4-1 stardand.

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±5oC
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
10 4s<Tp≤10s >63A

Phase-losing Motion Characteristic

No Times of the setting current Motion time Start condition Ambient temperature
Any two phases Another phase
1 1.0 0.9 >2h Cold state 20±5oC
2 1.15 0 <2h Heat state(Following the No.1 test)

Technical Data

Type Number Setting range(A) Applied Contactor
3UA50 0A 0.1~0.16 LC1-D-09
LC1-D-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) Applied Contactor
3UA52 0A 0.1~0.16 LC1-D-16
LC1-D-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) Applied Contactor
3UA54 1G 4~6.3 LC1-D-32
1J 6.3~10
2A 10~16
2B 12.5~20
2C 16~25
2D 20~32
2Q 25~36
3UA58 1G 4~6.3 LC1-D-45
LC1-D-63
LC1-D-75
LC1-D-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
Type Number Setting range(A) Applied Contactor
3UA59 0A 0.1~0.16 LC1-D-09~63
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
2E 25~40
2M 32~45
2T 40~57
2P 50~63
3UA62 2H 55~80 LC1-D-170
LC1-D-205
2W 63~90
2X 80~110
3H 90~120
3J 110~135
3K 120~150
3L 135~160
3M 150~180
3UA68 3F 320~500 LC1-D-400
3G 400~630

Dimensioned

3UA50
3UA52
3UA54
3UA58
3UA59
3UA62
3UA68
Type 3UA68(400) 3UA68(630)
a 50 52
b 146 156
c 70 71
Φ 11 11
e 171 186
f 25×4 30×5

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