3TF AC Contactors

3TF40 3TF44 3TF50 3TF56
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 IEC947-2, BS5424 & VDE0660.

  The contactor is a straight motion mechanism having double-breaking contacts. The auxiliary contacts are arranged 2 NO, 2NC at most. It is employed the flexible lockig connection between the contact support and core, There are no arc-isoladted panel in the le≤22A contactors. In the ln≥32A contactors, there are moulded arc-chute with arc-isolated panel. Because all contacts are made of high non-fusibility and against corrosion silver alloy. All series products can be mounted by screws, le≤32A contactor also by installation rail.

Specificaton

Type Rated
thermal
current
(A)		 Rated
operation
current
(A)		 (KW)
Controllabe power or motor		 Type
of Auxiliary
contact
AC-3 AC-4
380 660 380V 660V 380V 660V
3TF40 20 9 7 4 5.5 1.4 2.4 NO
NC
1NO+1NC
2NO+2NC
3TF41 20 12 8.5 5.5 7.5 1.9 3.3
3TF42 30 16 12.5 7.5 11 3.5 6
3TF43 30 22 16.5 10 15 4 6.6
3TF44 55 32 24 15 22 7.5 13
3TF45 55 38 24 18.5 22 9 15.5
3TF46 80 45 40 22 37 12 20.8
3TF47 80 63 60 30 55 14 24.3 2NC+2NO
4NC+4NO
3TF48 100 75 60 37 55 17 29.5
3TF49 100 85 80 45 75 21 36
3TF50 160 110 95 55 90 27 46.9
3TF51 160 140 120 75 110 35 60
3TF52 200 170 160 90 150 38 66
3TF53 210 205 165 110 160 50 86
3TF54 300 250 230 132 220 58 100
3TF55 300 300 260 160 250 66 114
3TF56 400 400 380 200 355 81 140
3TF68 630 630 600 335 560 160 278