designed thermal relay

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Specification

Application

Meba designed thermal relay MB3UA-66 series thermal realy is suitable for using in power system with AC 50HZ,rated operation voltage up to 660A and 1000V,in main circuit,current from 0.1A to 630A.It is used to protect AC threephase asynchronous motor against overload and open-phase.The realys have the best push-button for breaking NC contacts and the operating indication and free trip characteristics.The products also can be supplied with protecting case to ensure safety .The products can be plug and install independently or mount by rail.

Technical Data

Type	Rated insulation voltage(V)	Rated working current of thermal relay(A)		Rated current Rated(A)	Rated or scale of rated current(A)
MB3UA-63	660	63	3UA-59	0.16	0.1~0.16
				0.25	0.16~0.25
				0.4	0.25~0.4
				0.63	0.4~0.63
				1.0	0.63~1
				1.25	0.8~1.25
				1.60	1~1.60
				2.0	1.25~2
				2.5	1.6~2.5
				3.2	2~3.2
				4.0	2.5~4
				5.0	3.2~5
				6.3	4~6.3
				8.0	5~8
				10.0	6.3~10
				12.5	8~12.5
				16.0	10~16
				20.0	12.5~20
				25.0	16~25
				32.0	20~32
				40.0	25~40
				45.0	32~45
				57.0	40~57
				63.0	50~63
MB3UA-120	660	120	3UA-60	80.0	55~80
				90.0	63~90
				110.0	80~110
				120.0	90~120
				135.0	110~135
MB3UA-150	660	150	3UA-61	80.0	55~80
				90.0	63~90
				110.0	80~110
				120.0	90~120
				135.0	110~135
				150.0	120~150
MB3UA-180	660	180	3UA-62	80.0	55~80
				90.0	63~90
				110.0	80~110
				120.0	90~120
				135.0	110~135
				150.0	120~150
				160.0	130~160
				180.0	150~180
MB3UA-400	1000	400	3UA-66	125.0	80~125
				200.0	125~200
				250.0	160~250
				320.0	200~320
				400.0	250~400
MB3UA-630	1000	630	3UA-68	500.0	320~500
MB3UA-630	1000	630	3UA-68	630.0	400~630