SIEMENS
3/135
Siemens IC 10 · 2017
* You can order this quantity or a multiple thereof.
Illustrations are approximate.
Power Contactors for Switching Motors
SIRIUS 3RT12 and 3TF6 vacuum contactors
3
3TF6 vacuum contactors, 3-pole, 335 ... 450 kW
AC operation, 50/60 Hz
•
Main conductors: Busbar connections
•
Auxiliary and control conductors: Screw terminals
•
With overvoltage protection of the coil (varistor)
1)
For use of 3TF6 vacuum contactors in the environment of frequency
converters, we recommend ordering a special version:
3TF6...-
....
-Z A02
.
3TF68/3TF69 vacuum contactors in their basic version are supplied with
integrated overvoltage damping for the main current paths. The surge sup-
pression circuit is not required for operation in circuits with DC choppers,
frequency converters or speed-variable operating mechanisms, for exam-
ple.
The circuit could be damaged by the voltage peaks and harmonics and
thus cause phase-to-phase short circuits. For this reason, the contactors
can also be supplied without integrated overvoltage damping. Without
additional price.
The article number must be supplemented by
"–Z"
and the order code
"A02"
.
2)
When using 3TF68 vacuum contactors with IE3/IE4 motors from 8.5 times
the starting current, please use 3TF69 vacuum contactors. For more infor-
mation about dimensioning and configuring,
see page 3/6
.
3)
Please inquire about use of 3TF69 vacuum contactors with IE3/IE4 motors.
For accessories and spare parts,
see pages 3/137 to 3/140.
Rated control supply voltages, possible on request
(change of the 10th and 11th digits of the Article No.)
Delivery time on request
3TF68/3TF69
Size
Rated data
Auxiliary
contacts
Rated control
supply
voltage
U
s
SD
Screw terminals
PU
(UNIT,
SET,
M)
PS*
PG
AC-2 and AC-3,
t
u
: Up to 55° C
AC-1,
t
u
: 40 °C
Lateral
Opera-
tional
current
I
e
up to
Ratings of
three-phase motors
at 50 Hz and
Opera-
tional
current
I
e
up to
Article No.
Price
per PU
690 V
230 V
400 V
500 V
690 V
1 000 V
690 V
A
kW
kW
kW
kW
kW
A
NO
NC
V AC
d
AC operation, 50/60 Hz
1)
14
630
200
335
2)
434
600
--
700
4
4
110 ... 132
2
3TF6844-0CF7
1
1 unit
41B
200 ... 240
}
3TF6844-0CM7
1
1 unit
41B
600
700
4
4
110 ... 132
15
3TF6844-8CF7
1
1 unit
41B
200 ... 240
2
3TF6844-8CM7
1
1 unit
41B
14
820
260
450
3)
600
800
--
910
4
4
110 ... 132
2
3TF6944-0CF7
1
1 unit
41B
200 ... 240
}
3TF6944-0CM7
1
1 unit
41B
800
910
4
4
110 ... 132
15
3TF6944-8CF7
1
1 unit
41B
200 ... 240
5
3TF6944-8CM7
1
1 unit
41B
72
71
54
53
44
43
62
61
32
31
84
83
6/T3
5/L3
4/T2
3/L2
14
13
A1
A2
2/T1
22
21
1/L1
Rated control supply
voltage
U
s
Contactor type
3TF6844-.C..,
3TF6944-.C..
Size
14
AC operation
Solenoid coils for 50/60 Hz
110 ... 132 V AC
F7
200 ... 240 V AC
M7
230 ... 277 V AC
P7
380 ... 460 V AC
Q7
500 ... 600 V AC
S7
© Siemens AG 2016