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3UA
thermal relay is suitable for using in power system
with AC 50Hz, rathed operation voltage up to 660V and
100V, in main ciruit, 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 overlepping arrangement, for easy
selecting by the cutomers from -25 C to+55C 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 LEC292-1, LEC337-1 & VDE0660. |
