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APPLICATION CKR2 has the same function as 3UA,this 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.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 overlapping arrangement. For easy selecting by the customers for -25C to +55C air temperature as the products have temperature compensating. The relay have the test push-button for breaking NC contacts. The operating indication and free trip characteristics. The items confirm to IEC292-1,IEC337-1 * VDE0660. SPECIFICATIONS Type Rated operating current(A) Rated insulation voltage(V) CKR2-50 12.5 600 CKR2-52 25 660 CKR2-54 32 660 CKR2-58 80 1000 CKR2-59 63 600 CKR2-62 180 660 CKR2-66 400 1000 CKR2-68 630 1000