Datasheet

7
Power Contactors 3TF
For more than 110 years, Siemens has been developing and manufacturing industrial control products.
We offer a wide product range which fulfills the demands of our customers regarding performance and
reliability. Our aim is to make industrial operation easier ensuring flexible mounting, modular
construction and high functionality. With 3TF contactors Siemens has been offering a tried tested
trusted solution to control, switch and protect your motors upto 250kW.
Applications
3TF power contactors are suitable for switching and controlling
squirrel cage and slip-ring motors as well as other AC loads, such
as solenoids, capacitors, lighting loads, heating loads and
transformer loads.
Standards
Contactors conform to IS/IEC 60947-4-1. They also carry the CE
mark.
Coordinated feeder
Contactors and bi-relays have been tested for type-2 coordination
at Iq = 50kA, 415V AC, 50Hz as per IS/IEC 60947-4-1, for both fuse
protected as well as fuseless motor feeders.
Range
Air break contactors are available from 9 A to 475A in 3 pole
version.
Also available in 2 pole AC version from 45A to 400A.
Benefits and features
Flexibility
• Choice of Auxiliary contacts
Contactor Aux. contacts on Permissible add-on
basic unit contact blocks
9A / 12A 1 NO Upto 4NO or 4NC
9A / 12A 1 NC Upto 4NO or 2NC
16A/22A - Upto 4NO or 4NC
32A/38A - Upto 4NO or 4NC
45A to 475A 2NO+2NC 2 x (1NO+1NC)
The customer can order desired number of contacts thereby
reducing the cost.
• Choice of mounting
Contactor can be mounted on 35mm DIN and they are also
suitable for screw mounting (9-38A – DIN / Screw mounting
and 45-475A – Screw mounting).
• Choice of coil voltages
AC 50Hz coil code: 3TF30 to 3TF56
Coil voltage (V) 24 42 110 230 415
Code B0 D0 F0 P0 R0
Wide band AC 50 Hz coil code: 3TF30 to 3TF35
Coil voltage (V) 70-140 150-280 260-460
Code W110 W220 W415
AC 50/60 Hz coil code: 3TF57
Coil voltage (V) 110-132 220-240 380-460
Code F7 M7 Q7
DC coil code: 3TF30 to 3TF57
Coil voltage (V) 24 42 48 110 220 250
+
Code B4 D4 W4 F4 M4 N4
+
For 3TF3 only
(Other coil voltages are also available.)