SIEMENS
3/6
Siemens IC 10 · 2017
Switching Devices – Contactors and Contactor Assemblies
Power Contactors for Switching Motors
Introduction
3
Connection methods
The contactors are available with screw terminals (box terminals
or flat connectors) or with spring-type terminals.
Devices of the 3TF2 series are also available for connection with
flat connectors and solder pin connectors.
The 3TG10 power relays/miniature contactors are available with
screw terminals or flat connectors.
Support function
The 3RT20 contactors up to 18.5 kW can also be ordered via an
online configurator.
Use of 3RT contactors, 3RT and 3TF vacuum contactors,
reversing contactor assemblies, and contactor assemblies
for star-delta (wye-delta) starting with IE3/IE4 motors
Note:
For the use of 3RT contactors, 3RT and 3TF vacuum contactors,
reversing contactor assemblies and contactor assemblies for
star-delta (wye-delta) starting in conjunction with highly energy-
efficient IE3/IE4 motors, please observe the information on
dimensioning and configuring;
see Application Manual
"SIRIUS Controls with IE3/IE4 Motors",
.
For more information
see Preface, page 7
.
SUVA-certified safety contactors
We offer special safety contactors for use in safety-related appli-
cations. They have NC contacts with mirror contact function and
they have SUVA certification. This means they have non-remov-
able auxiliary switch blocks and cannot be operated manually.
They thus comply with all requirements for use in safety applica-
tions.
Size
Type
--
3TG10
3TG10 power relays/miniature contactors
Type
3TG10
Number of main contacts
4
AC, DC operation
(p. 3/151)
AC-1
(40 °C,
690 V)
I
e
A
20
P
at 400 V
kW
13
At 230 V
kW
7.5
AC-2 and AC-3
I
e
/400 V
A
8.4
P
at 400 V
kW
4
Screw terminals
Spring-type terminals
Flat connectors
Solder pin connections
The terminals are indicated in the corresponding
tables by the symbols shown on orange backgrounds.
© Siemens AG 2016