3UA Thermal Overload Relay
Application
3UA series thermal overload relay is suitable for using in power system with AC 50/60Hz, rated operation voltage up to 660V and 1000V, current from 0.1A to 630A. It is used to protect AC three-phase 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 overlepping arrangement, for easy selecting by the customers from -25Ûc to +55Ûc air temperature as the products have temperature compensating. The relays have the test push-button for breaking NC contacts, the operating indication and free trip characteristics. The items conform to IEC60947-5.
Specifications
|
Type |
Rated operating current (A) |
Rated insulation voltage (V) |
Current setting range (A) |
|
3UA50 |
12.5 |
660 |
0.1~0.16, 0.16~0.25, 0.25~0.4, 0.32~0.63,
0.63~1.0, 0.8~1.25, 1.0~1.6, 1.25~2.0,
1.6~2.5, 2.0~3.2, 2.5~4.0, 3.2~5.0,
4.0~6.3, 5.0~8.0, 6.3~10.0, 8.0~12.5 |
|
3UA52 |
25 |
660 |
0.1~0.16, 0.16~0.25, 0.25~0.4, 0.4~0.63,
0.63~1.0, 0.8~1.25, 1.0~1.6, 1.25~2.0,
1.6~2.5, 2.0~3.2, 2.5~4.0, 3.2~5.0,
4.0~6.3, 5.0~8.0, 6.3~10.0, 8.0~12.5,
10.0~16.0, 12.5~20.0, 16.0~25.0 |
|
3UA54 |
32 |
660 |
4.0~6.3, 6.3~10.0, 10.0~16.0, 12.5~20.0,
16.0~25.0, 20.0~32.0, 25.0~36.0 |
|
3UA58 |
80 |
1000 |
16.0~25.0, 20.0~32.0, 25.0~40.0, 32.0~50.0,
40.0~57.0, 50.0~63.0, 57.0~70.0, 63.0~80.0 |
|
3UA59 |
63 |
660 |
0.1~0.16, 0.16~0.25, 0.25~0.4, 0.4~0.63,
0.63~1.0, 0.8~1.25, 1.0~1.6, 1.25~2.0,
1.6~2.5, 2.0~3.2, 2.5~4.0, 3.2~5.0,
4.0~6.3, 5.0~8.0, 6.3~10.0, 8.0~12.5,
10.0~16.0, 12.5~20.0, 16.0~25.0, 20.0~32.0,
25.0~40.0, 32.0~45.0, 40.0~57.0, 50.0~63.0 |
|
3UA62 |
180 |
660 |
55.0~80.0, 63.0~90.0,
80.0~110.0, 90.0~120.0,
110.0~35.0, 120.0~150.0,
135.0~160.0, 150.0~180.0 |
|
3UA66 |
400 |
1000 |
80.0~125.0, 125.0~200.0,
180.0~250.0, 200.0~320.0,
250.0~400.0 |
|
3UA68 |
630 |
1000 |
320.0~500.0, 400.0~630.0 | |
