SIEMENS
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Siemens IC 10 · 2017
Contactor Assemblies for Star-Delta (Wye-Delta) Starting
SIRIUS 3RA24 contactor assemblies for star-delta (wye-delta) starting, up to 90 kW
3
Type
3RA2434
3RA2435
3RA2436
3RA2437
3RA2444
3RA2445
3RA2446
Sizes
S2-S2-S0
S2-S2-S0
S2-S2-S0
S2-S2-S2
S3-S3-S2
S3-S3-S2
S3-S3-S2
General data
Dimensions (W x H x D)
with function module
• AC and DC operation
-
Screw terminals
mm
177.5 x 142 x 223
220 x 180 x 244
Individual contactors
• Q11 line contactor
Type
3RT2035
3RT2035
3RT2036
3RT2037
3RT2045
3RT2045
3RT2046
• Q13 delta contactor
Type
3RT2035
3RT2035
3RT2036
3RT2037
3RT2045
3RT2045
3RT2046
• Q12 star contactor
Type
3RT2026
3RT2027
3RT2028
3RT2035
3RT2035
3RT2036
3RT2037
Mechanical endurance
Operat-
ing cy-
cles
1 million
Unassigned auxiliary contacts of the
individual contactors
For circuit diagrams of the control circuit,
see Manual
"SIRIUS - SIRIUS 3RT Contactors/Contactor assemblies",
.
Short-circuit protection
Main circuit without overload relays
• Fuse links, operational class gG:
LV HRC, type 3NA; DIAZED, type 5SB
NEOZED type 5SE
with single or double infeed
Greatest rated current of the fuse
according to IEC 60947-4-1
-
Type of coordination "1"
A
160
200
250
-
Type of coordination "2"
A
80
125
160
Auxiliary circuit
Short-circuit test
• With fuse links, operational class gG:
DIAZED, type 5SB; NEOZED, type 5SE
with short-circuit current
I
k
= 1 kA
acc. to IEC 60947-5-1
A
A
10
6 (up to
I
k
< 0.5 kA;
260 V),
If the auxiliary contact of the overload relay is connected in the contactor coil circuit.
• With miniature circuit breaker, C characteristic
with short-circuit current
I
k
= 400 A
A
A
10
6 (up to
I
k
< 0.5 kA;
260 V),
If the auxiliary contact of the overload relay is connected in the contactor coil circuit.
Short-circuit protection with overload relay
See
Configuration Manual "Configuring SIRIUS Innovations –
Selection Data for Fuseless and Fused Load Feeders",
On request
Rated data of the main contacts
Current-carrying capacity with reversing time
up to 10 s
• Rated operational current
I
e
At 400 V
A
On request
690 V
A
On request
• Rated power for three-
phase motors with 50 Hz
and 60 Hz
At 230 V
kW
On request
400 V
kW
On request
690 V
kW
On request
•
Switching frequency
with overload relay
h
-1
15
Current-carrying capacity with reversing time
up to 15 s
• Rated operational current
I
e
At 400 V
A
On request
690 V
A
On request
• Rated power for three-
phase motors with 50 Hz
and 60 Hz
At 230 V
kW
On request
400 V
kW
On request
690 V
kW
On request
•
Switching frequency
with overload relay
h
-1
15
Current-carrying capacity with reversing time
up to 20 s
• Rated operational current
I
e
At 400 V
A
On request
690 V
A
On request
• Rated power for three-
phase motors with 50 Hz
and 60 Hz
At 230 V
kW
On request
400 V
kW
On request
690 V
kW
On request
•
Switching frequency
with overload relay
h
-1
15
W
H
D
© Siemens AG 2016