Application
The contactor is suitable for using in the circuits up to the rated voltage 660V AC 50Hz or 60Hz, rated current 630A, for making and breaking, and for frequent starting and controlling the motor. After combined with the mechanical interlocking device, it becomes 3TD Series convertible contactor for controlling, starting, breaking and reversing of the motor. The products comply with IEC60947-4.

Specifications

Type	Rated thermal current (A)	Rated operating current at AC3 380V (A)	Rated operating current at 660V (A)	The power of controlled motor (KW)		Type of auxiliary contact
				380V	660V
3TB40	20	9	3.3	4	5.5	1NO 1NC 1NO+1NC 2NO+2NC
3TB41	20	12	4.3	5.5	7.5
3TB42	30	16	7.7	7.5	11
3TB43	30	22	8.5	11	11
3TB44	45	32	12	15	23	2NC+2NO