Page 195 - Fimex Taiwan Ltd_Wiring Devices 2018

3UA5 TYPE THERMAL OVERLOAD RELAY

3UA5 thermal relay is suitable for using in power system
with AC 50Hz, rated operation voltage up to 660V and
1000V, in main circuit, current from 0.1A to 630A. It is used
to protect AC three-phrase asynchronous motor against
overload and open-phase. The current setting value can
be regulated and the setting current values of many thermal
elements are intercrossing overlapping arrangement, for
easy selecting by the customers from -25ʨ to +55ʨ air
temperature as the products have temperature
compensating. The relays have the test pushbutton for
breaking NC contacts, the operating indication and free trip
characteristics. The items conform to IEC292-1, IEC337-1
& VDE0660.
Specification:

Rated Operating Rated Insulation
Type Current Setting Range(A)
Current(A) Voltage(V)
0.1~0.16, 0.16~0.25, 0.25~4, 0.32~0.63,
0.63~0.1, 0.8~1.25, 1~1.6, 1.25~2, 1.6~2.5,
3UA50 12.5 660
2~3.2, 2.5~4, 3.2~5, 4~6.3, 5~8,
6.3~10, 8~12.5
0.1~0.16, 0.16~0.25, 0.25~0.4, 0.4~0.63,
0.63~1, 0.8~1.25, 1~1.6, 1.25~2, 1.6~2.5,
3UA52 25 660
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
4~6.3, 6.3~10, 10~16, 12.5~20, 16~25,
3UA54 32 660
20~32
16~25, 20~32, 25~40, 32~50, 40~57, 50~63,
3UA58 80 1000
57~70, 63~80
0.1~0.16, 0.16~0.25, 0.25~0.4, 0.4~0.63,
0.63~1, 0.8~1.25, 1~1.6, 1.25~2, 1.6~2.5,
3UA59 63 600 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
55~80, 63~90, 80~110, 90~120, 110~135,
3UA62 180 660
120~150, 135~160, 150~180
80~125, 125~200, 180~250, 200~320,
3UA66 400 1000
250~400

3UA68 630 1000 320~500, 400~630

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