Thermal overload relays

 

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3UA thermal relay

3UAModel Reference3UA543UA583UA50Application3UA 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
Product Details

3UA

Model Reference

3UA543UA54

3UA583UA58

3UA503UA50

Application

Motion Characteristic: Three-phase Balance Motion Time

NoTimes of the setting currentMotion timeStart conditionAmbient temperature
11.05>2hCold state20±5oC
21.2<2hHeat state(Following the No.1 test)
31.5<4min
47.210A2s<Tp≤10s≤63ACold state
104s<Tp≤10s>63A

Phase-losing Motion Characteristic

NoTimes of the setting currentMotion timeStart conditionAmbient temperature
Any two phasesAnother phase
11.00.9>2hCold state20±5oC
21.150<2hHeat state(Following the No.1 test)

Technical Data

TypeNumberSetting range(A)Applied Contactor
3UA500A0.1~0.16LC1-D-09
LC1-D-12
0C0.16~0.25
0E0.25~0.4
0G0.4~0.63
0J0.63~1
0K0.8~1.25
1A1~1.6
1B1.25~2
1C1.6~2.5
1D2~3.2
1E2.5~4
1F3.2~5
1G4~6.3
1H5~8
1J6.3~10
1K8~12.5
2S10~14.5
--
--
TypeNumberSetting range(A)Applied Contactor
3UA520A0.1~0.16LC1-D-16
LC1-D-22
0C0.16~0.25
0E0.25~0.4
0G0.4~0.63
0J0.63~1
0K0.8~1.25
1A1~1.6
1B1.25~2
1C1.6~2.5
1D2~3.2
1E2.5~4
1F3.2~5
1G4~6.3
1H5~8
1J6.3~10
1K8~12.5
2A10~16
2B12.5~20
2C16~25
TypeNumberSetting range(A)Applied Contactor
3UA541G4~6.3LC1-D-32
1J6.3~10
2A10~16
2B12.5~20
2C16~25
2D20~32
2Q25~36
3UA581G4~6.3LC1-D-45
LC1-D-63
LC1-D-75
LC1-D-85
8A11~17
2B12.5~20
2C16~25
2D20~32
2E25~40
2F32~50
2T40~57
2P50~63
2V57~70
2U63~80
8W70~88
TypeNumberSetting range(A)Applied Contactor
3UA590A0.1~0.16LC1-D-09~63
0C0.16~0.25
0E0.25~0.4
0G0.4~0.63
0J0.63~1
0K0.8~1.25
1A1~1.6
1B1.25~2
1C1.6~2.5
1D2~3.2
1E2.5~4
1F3.2~5
1G4~6.3
1H5~8
1J6.3~10
1K8~12.5
2A10~16
2B12.5~20
2C16~25
2D20~32
2E25~40
2M32~45
2T40~57
2P50~63
3UA622H55~80LC1-D-170
LC1-D-205
2W63~90
2X80~110
3H90~120
3J110~135
3K120~150
3L135~160
3M150~180
3UA683F320~500LC1-D-400
3G400~630

Dimensioned

3UA50

3UA52

3UA54

3UA58

3UA59

3UA62

3UA68

Type3UA68(400)3UA68(630)
a5052
b146156
c7071
Φ1111
e171186
f25×430×5


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