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3UA thermal relay

3UA thermal relay

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Application
3UA thermal relay is suitable for using in power system with AC 50Hz,rate operation voltage up to 660V and 1000V,in main circuit, current from 0.1A to 630A.Lt 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 overlapping arrangement, for easy selecting by the customers from-25¡æ to +55¡æ air temperature as the products have temperature compensating. The relays have the test push-button for breaking NC contacts, the operating indications and free trip characteristics. The items conform to IEC60947-4.
Specifications


Type

Rated operating

Rated insulation

Current setting range(A)

current(A)

voltage(V)

3UA50

12.5

660

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¡¢2¡«3.2¡¢2.5¡«4¡¢3.2¡«5¡¢4¡«6.3¡¢5¡«8¡¢6.3¡«10¡¢8¡«12.5¡¢

3UA52

25

660

0.1¡«0.16¡¢0.16¡«0.25¡¢0.25¡«0.4¡¢0.4¡«0.63¡¢0.63¡«1¡¢0.8¡«1.25¡¢1¡«1.6¡¢1.25¡«2¡¢1.6¡«2.5

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¡¢

3UA54

32

660

4¡«6.3¡¢6.3¡«10¡¢10¡«16¡¢12.5¡«20¡¢16¡«25¡¢20¡«32¡¢

3UA58

80

1000

16¡«25¡¢20¡«32¡¢25¡«40¡¢32¡«50¡¢40¡«57¡¢50¡«63¡¢57¡«70¡¢63¡«80¡¢

3UA59

63

600

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¡¢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¡¢

3UA62

180

660

55¡«80¡¢63¡«90¡¢80¡«110¡¢90¡«120¡¢

110¡«135¡¢120¡«150¡¢135¡«160¡¢150¡«180¡¢

3UA66

400

1000

80¡«125¡¢125¡«200¡¢180¡«250¡¢200¡«320¡¢250¡«400¡¢

3UA68

630

1000

320¡«500¡¢400¡«630¡¢

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