Application
3TF series AC Contactors are suitable in electrical system with AC 50/60Hz, rated operational voltage up to 660V, In AC-3 usage, rated operational voltage up to 380V, rated operational current up to 630A to make or break remote motors or system. They can form electromagnetic starters with suitable thermal overload relays 3UA series to protect system and motors against overload or phase-failure. They are made according to IEC60947-4.
The contactor is a straight motion mechanism having double-breaking contacts. The auxiliary contacts are arranged 2NO, 2NC at most. It is employed the flexible locking connection between the contact support and core. There are no arc-isolated panel in the le≤22A contactors. In the In≥32A contactors, there are moulded arc-chute with arc-isolated panel. Because all contacts are made of high nonfusibility and against corrosion silver alloy. All series products can be mounted by screws, le≤32A contactor also by installation rail.

Specifications

Type	Rated thermal current (A)	Rated operation current (A)		Controllable power of motor (KW)				Type of auxiliary contact
				AC-3		AC-4
		380V	660V	380V	660V	380V	660V
3TF30	20	9	3.33	4	5.5	1.4	2.4	NO NC 1NO+1NC 2NO+2NC
3TF31	20	12	4.33	5.5	7.5	1.9	3.3
3TF32	30	18	7.77	7.5	11	3.5	6
3TF33	30	22	8.5	11	11	4	6.6
3TF34	45	32	15.6	15	23	7.5	13
3TF35	45	38	18.5	18.5	23	9	15.5
3TF40	20	9	3.3	4	5.5	1.4	2.4
3TF41	20	12	4.3	5.5	7.5	1.9	3.3	2NC+2NO 4NC+4NO
3TF42	30	16	7.7	7.5	11	3.5	6
3TF43	30	22	8.5	11	11	4	6.6
3TF44	45	32	15.6	15	23	7.5	13
3TF45	45	38	18.5	18.5	23	9	15.5
3TF46	70	45	24	22	39	12	20.8
3TF47	70	63	28	30	55	14	24.3
3TF48	90	75	34	37	67	17	29.5
3TF49	90	85	42	45	67	21	36
3TF50	150	110	54	55	100	27	46.9
3TF51	150	140	68	75	100	35	60
3TF52	180	170	75	90	156	38	66
3TF53	220	205	96	110	156	50	86
3TF54	300	250	110	132	235	58	100
3TF55	300	300	125	160	235	66	114
3TF56	400	400	150	200	375	81	140
3TF57	550	475	150	250	375	81	140
3TF68	630	630	600	335	560	160	278