Product Description

3UA thermal relay is suitable for using in power system with AC *0Hz, rated operation voltage up to **0V and ***0V, in main circuit, current from 0.1A to **0A. 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 customer from**5&#***1; to **5&#***1; air temperature as the products have temperature compensating. The relays have the test push- for breaking NC contacts, the operating indication and free trip characteristics. The items conform to IEC****1, IEC****1& VDE***0.