Products>RELAY > 3UA THERMAL RELAY


 

APPLICATION
    3UA series 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 to 630A. It is used to protect AC three-phase asynchronous motor against overload and open-phase.
The relays have the test push-button for breaking NC contacts and the operating and free trip characteristics the products also can be supplied with protecting case to ensure safety the products can plug in the contactor and install independently or mount by rail.
 
TECHNICAL SPECIFICATION
 
Type Rated operating current (A) Rated insulation voltage (V) Current setting range
3UA50 12.5 660 0.10.16,0.16∽0.25,0.250.4,0.320.63,
0.630.1,0.81.25,11.6,1.252,1.62.5,23.2,
2.54,3.25,46,58,310,812.5
3UA52 25 660 0.10.16,0.16∽0.25,0.250.4,0.320.63,
0.630.1,0.81.25,11.6,1.252,1.62.5,23.2,
2.54,3.25,46,58,310,812.5,1016,12.5∽20,1625
3UA54 32 660 46.3,6.310,10∽16,12.5∽20,,1625,20∽32
3UA58 80 1000 1625,2032,2540,3250,4057,5063,5770,6380,
3UA59 63 660 0.10.16,0.16∽0.25,0.250.4,0.320.63,
0.630.1,0.81.25,11.6,1.252,1.62.5,23.2,
2.54,3.25,46,58,310,812.5,1016,12.5∽20,1625,
2032,2540,3245,4057,5063
3UA62 180 660 5580,6390,80110,90120,110135
3UA66 400 1000 80125,125200,180∽250,200320,250400
3UA68 630 1000 320500,400∽630
 

 

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