overload motor switch

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Specification

Application

Meba overload motor switch MB3UA-58 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 synchronous motor against overload and open-phase.

The relays have the test push-button for breaking NC contacts and the operating indicatino 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 Data

Type	Rated operating current(A)	Rated insulation Voltage(V)	Current setting range(A)
3UA50	12.5	660	0.1~0.16,0.16~0.25,0.25~4,0.32~0.63,0.63~0.1,0.8~1.25,1~1.16,1.25~2,1.6~2.5, 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 ,32~40, 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