SIEMENS
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Siemens IC 10 · 2017
Load Feeders and Motor Starters for Use in the Control Cabinet
SIRIUS 3RA6 Compact Starters
General data
8
Consistent solution from the infeed to the motor feeder
The SIRIUS infeed system for 3RA6 with integrated PE bar is
offered as a user-friendly possibility of feeding in summation
currents up to 100 A with a maximum conductor cross-section
of 70 mm² and connecting the motor cable directly without
additional intermediate terminals.
Screw and spring-type terminals
The SIRIUS compact starters and the infeed system for 3RA6 are
available with screw and spring-type terminals.
System configurator for engineering
A free system configurator is available to reduce further the
amount of engineering work for selecting the required compact
starters and matching infeed.
Use of load feeders in conjunction with IE3/IE4 motors
Note:
For the use of SIRIUS 3RA6 compact starters in conjunction
with highly energy-efficient IE3/IE4 motors, please observe the
information on dimensioning and configuring;
see
"Application Manual for SIRIUS Controls with IE3/IE4 Motors",
.
For more information
see Preface, page 7
.
Types of infeed for the 3RA6 fuseless compact starters
On the whole four different infeed possibilities are available:
•
Parallel wiring
•
Use of three-phase busbars (combination with SIRIUS motor
starter protectors and SIRIUS contactors possible)
•
8US busbar adapters
•
SIRIUS infeed system for 3RA6
(see page 8/79)
To comply with the clearance and creepage distances
demanded according to UL 508 there are the following infeed
possibilities:
SIRIUS 3RA6 compact starters
SIRIUS 3RA6 compact starters are universal motor feeders
according to IEC 60947-6-2. As control and protective switching
devices (CPS) they can connect, convey and disconnect the
thermal, dynamic and electrical loads from short-circuit currents
up to
I
q
= 53 kA, i.e. they are practically weld-free. They com-
bine the functions of a motor starter protector, a contactor and
an electronic overload relay in one enclosure. 45-mm-wide
direct-on-line starters and 90-mm-wide reversing starters are
available as variants.
The reversing starter version comes with not only an internal
electrical interlock but also with a mechanical interlock to pre-
vent simultaneous actuation of both directions of rotation.
The compact starters have isolating features in accordance
with IEC 60947.2 and can be used as disconnector units (main
control switch according to EN 60204 or VDE 0113). Isolation is
effected by moving the handle into the "OFF" position; discon-
nection by means of the control contacts is not enough.
3RA6 fuseless compact starters are available in five current
setting ranges. The 3RA61 and 3RA62 have two control voltage
ranges (AC/DC), and the 3RA64 and 3RA65 have one control
voltage range (DC):
Notes:
The 3RA2 load feeders can be used for fuseless load feeders
> 32 A up to 65 A. Load feeders in size S3 up to 100 A are
available for self-assembly
(see also page 8/4)
.
The SENTRON 3VL circuit breakers and the SIRIUS 3RT contac-
tors can be used for fuseless load feeders > 100 A.
Operating conditions
The SIRIUS 3RA6 compact starters are suitable for use in any
climate. They are intended for use in enclosed rooms in which
no severe operating conditions (such as dust, caustic vapors,
hazardous gases) prevail. Suitable covers must be provided for
installation in dusty and damp locations.
The SIRIUS compact starters are generally designed to degree
of protection IP20. The permissible ambient temperature during
operation is -20 to +60 °C. The rated short-circuit current
I
CS
according to IEC 60947-6-2 is 53 kA at 400 V.
Note:
The maximum permissible short-circuit currents of the device
versions for the various line system configuration and currents
are available on request from Technical Assistance:
Tel.: +49 (0) 911-895-5900
Email:
technical-assistance@siemens.com
Screw terminals
Spring-type terminals
The terminals are indicated in the corresponding
tables by the symbols shown on orange backgrounds.
Type of infeed
Infeed terminal
(according to UL 508,
type E)
Type
Parallel wiring
Terminal block for
"Self-Protected
Combination Motor
Controller (Type E)"
3RV2928-1H
Three-phase busbars
Three-phase infeed
terminal for construct-
ing "Type E Starters",
UL 508
3RV2925-5EB
Infeed system for 3RA6
Infeed on left,
50/70 mm
2
, screw
terminal with 3 sockets,
outgoing terminal
with screw/spring-type
terminals
incl. PE bar
3RA6813-8AB
(screw terminals),
3RA6813-8AC
(spring-type terminals)
Current
setting
range
At 400 V AC
for three-phase
motors
Standard
output
P
Rated control supply voltage for
3RA61, 3RA62
compact starters
3RA64, 3RA65
compact starters
for IO-Link
A
kW
V AC/DC
V DC
0.1 ... 0.4
0.09
24
110 ... 240
24
0.32 ... 1.25
0.37
1 ... 4
1.5
3 ... 12
5.5
8 ... 32
15
© Siemens AG 2016