Siemens SIRIUS 3RT - Page 151

Configuration
6.13 Starting three-phase motors with reduced starting current peaks (contactor assembly for star-delta (wye-
delta) start)
SIRIUS - SIRIUS 3RT Contactors/Contactor assemblies
Manual, 09/2017, A5E03656507120A/RS-AE/006
151
Table 6- 9 Spring-loaded connection
Rated data for 50 Hz
400 V AC
Size
Article number
Power [kW]
Operational
current I
e
[A]
Motor current
[A]
Line / delta con-
tactor
Star contactor
Complete assembly
5.5
12
9.5 … 13.8
S00-S00-S00
3RT2015-2....
3RT2015-2....
3RA2415-8XF31-2...
7.5
16
12.1 … 17
3RT2017-2....
3RT2015-2....
3RA2416-8XF31-2...
11 25 19 … 25 3RT2018-2.... 3RT2016-2.... 3RA2417-8XF31-2...
11
25
19 … 25
S0-S0-S0
3RT2024-2...0
3RT2024-2...0
3RA2423-8XF32-2...
15
32
24.1 … 34
3RT2026-2...0
3RT2024-2...0
3RA2425-8XF32-2...
18.5
40
34.5 … 40
3RT2026-2...0
3RT2024-2...0
3RA2425-8XF32-2...
22
50
31 … 43
3RT2027-2...0
3RT2026-2...0
3RA2426-8XF32-2...
22 / 30
45 / 60
31 … 43
S2-S2-S0
3RT2035-3...0
3RT2026-2...0
--
37
80
62.1 ... 77.8
3RT2035-3...0
3RT2027-2...0
--
45
86
69 ... 86
3RT2036-3...0
3RT2028-2...0
--
55
115
77.6 ... 108.6
S2-S2-S2
3RT2037-3...0
3RT2035-3...0
--
55
115
77.6 ... 108.6
S3-S3-S2
3RT2045-3...0
3RT2035-3...0
--
75
150
120.7 ... 150
3RT2045-3...0
3RT2036-3...0
--
90
160
86 ... 160
3RT2046-3...0
3RT2037-3...0
--
Note
The selection of contactor types refers to a fused design.
Connection example with spring-loaded connection and large conductors, e.g. with 6 mm
2
connection
cross-section
For a contactor assembly for star-delta (wye-delta) start, e.g. 3RA2426-8XH32-2BB4
(22 kW, 50 A), it is possible to select the following connection type with a 6 mm
2
conductor
cross-section:
● Remove the upper wiring modules to connect the main current paths between line
contactor (Q 11) and delta contactor (Q 13).
● Separate infeed of line contactor (Q 11) and delta contactor (Q 13) with 6 mm
2
(permitted
in a three-way network).
Two conductors per phase with 6 mm
2
conductor cross-section are connected to the
central infeed short-circuit protection device and only one conductor per phase to the
contactors.