SIEMENS
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Siemens IK PI · 2015
AS-Interface
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Contactors and contactor assemblies
Contactor assemblies
> SIRIUS 3RA24 wye-delta assemblies
4
■
Overview
These 3RA24 contactor assemblies for wye-delta starting are
designed for standard applications.
Note:
Contactor assemblies for wye-delta starting in special applica-
tions such as very heavy starting or wye-delta starting of special
motors must be customized. Help with designing such special
applications is available from Technical Assistance.
The 3RA24 contactor assemblies for wye-delta starting can be
ordered as follows:
•
Complete, fully wired and tested, with electrical and mechan-
ical interlock
•
As individual parts for customer assembly.
A dead interval of 50 ms on reversing is already integrated in
the
function module for wye-delta starting. The auxiliary contacts
integrated in the contactors (see Chapter 5, "IO-Link") are
unassigned.
■
Selection and ordering data
Fully-wired and tested contactor assemblies
For online configurator see
www.siemens.com/sirius/configurators
.
1)
Guide value for 4-pole standard motors at 50 Hz 400 V AC.
The actual starting and rated data of the motor to be switched must be
considered when selecting the units.
Components for customer assembly
Assembly kits with wiring modules and mechanical connectors
are available for contactor assemblies for wye-delta starting.
Contactors, overload relays, function modules for wye-delta
starting, auxiliary switches for electrical interlock – if required
also infeed terminals – must be ordered separately.
The wiring kits for sizes S00 and S0 contain the top and bottom
main conducting path connections between the line and delta
contactors (top) and between the delta and star contactors
(bottom).
Selection of contactors for customer assembly
3RA241.-8XE31-2BB4
3RA242.-8XE32-1BB4
3RA242.-8XE32-2BB4
Rated data AC-3
Rated control supply
voltage
U
s
1)
Screw terminals
Spring-type terminals
Operational
current
I
e
up to
Ratings of three-phase motors
1)
at 50 Hz and
Article No.
Article No.
400 V
230 V
400 V
500 V
690 V
A
kW
kW
kW
kW
V
DC operation
Size S00
For AS-Interface connection
12
3.3
5.5
7.2
9.2
24 DC
3RA2415-8XH31-1BB4
3RA2415-8XH31-2BB4
16
4.7
7.5
10.3
9.2
24 DC
3RA2416-8XH31-1BB4
3RA2416-8XH31-2BB4
25
5.5
11
11
11
24 DC
3RA2417-8XH31-1BB4
3RA2417-8XH31-2BB4
Size S0
For AS-Interface connection
25
7.1
11
15,6
19
24 DC
3RA2423-8XH32-1BB4
3RA2423-8XH32-2BB4
32 / 40
11.4
15
/ 18.5
19
19
24 DC
3RA2425-8XH32-1BB4
3RA2425-8XH32-2BB4
50
--
22
19
19
24 DC
3RA2426-8XH32-1BB4
3RA2426-8XH32-2BB4
Rated data AC-3 at 50 Hz 400 V AC
Size
Rating
Operational
current
I
e
Motor current
Line/delta contactor
Star contactor
Article No. complete
kW
A
A
5.5
12
9.5 ... 13.8
S00-S00-S00
3RT2015-.BB41-0CC0
3RT2015-.BB41-0CC0
3RA2415-8XH31-.BB4
7.5
16
12.1 ... 17
3RT2017-.BB41-0CC0
3RT2015-.BB41-0CC0
3RA2416-8XH31-.BB4
11
25
19
... 25
3RT2018-.BB41-0CC0
3RT2016-.BB41-0CC0
3RA2417-8XH31-.BB4
11
25
19
... 25
S0-S0-S0
3RT2024-.BB40-0CC0
3RT2024-.BB40-0CC0
3RA2423-8XH32-.BB4
15
32
24.1 ... 34
3RT2026-.BB40-0CC0
3RT2024-.BB40-0CC0
3RA2425-8XH32-.BB4
18.5
40
34.5 ... 40
3RT2026-.BB40-0CC0
3RT2024-.BB40-0CC0
3RA2425-8XH32-.BB4
22
50
31
... 43
3RT2027-.BB40-0CC0
3RT2026-.BB40-0CC0
3RA2426-8XH32-.BB4
© Siemens AG 2014