SIEMENS
4/22
Siemens IC 10 · 2017
Contactors for Special Applications
SIRIUS 3RT25 contactors, 4-pole, 2 NO + 2 NC
4
1)
Values for devices with AC and DC operation: For 3RT2526 with
DC operation, different values apply to AC-2 and AC-3 for the NC.
2)
For
U
s
> 24 V, the rated operational currents
I
e
for the NC contact current
paths are equal to 50 % of the values for the NO contact current paths.
Type
3RT2516
3RT2517
3RT2518
3RT2526
3RT2535
3RT2536
Size
S00
S0
S2
Control
Solenoid coil
operating range
• AC operation
At 50 Hz
0.8 ... 1.1 x
U
s
At 60 Hz
0.85 ... 1.1 x
U
s
0.8 ... 1.1 x
U
s
• DC operation
Up to 50 °C
0.8 ... 1.1 x
U
s
0.85 ... 1.1 x
U
s
--
Up to 60° C
--
• AC/DC operation
--
0.8 x
U
s min
... 1.1 x
U
s max
Power consumption
of the solenoid coils
(for cold coil and 1.0 x
U
s
)
See
3RT2316,
page 4/15
See 3RT2317,
page 4/15
See 3RT2326,
page 4/15
See 3RT233., page 4/15
Operating times for 0.8 ... 1.1 x
U
s
Total break time = Opening delay + Arcing time
See
3RT2316,
page 4/15
See 3RT2317,
page 4/15
See 3RT2326,
page 4/15
See 3RT233., page 4/15
Rated data of the main contacts
Load rating with AC
Utilization category AC-1,
switching resistive loads
• Rated operational currents
I
e
At 40 °C up to 690 V
A
18
22
40
60
70
At 60 °C up to 690 V
A
16
20
35
55
60
• Rated power of
AC loads
P.f. = 0.95 (at 60 °C)
At 230 V
kW
6
7.5
13.3
21
23
400 V
kW
10.5
13
23
36
39
• Minimum conductor cross-section
for loads with
I
e
At 40 °C
mm
2
2.5
4
10
16
25
Utilization categories AC-2 and AC-3
AC
1)
DC
1)
• Rated operational currents
I
e
(at 60 °C)
NO up to 400 V
A
9
12
16
25
35
41
NC up to 400 V
A
9
25
20
35
41
• Rated power of
slipring or squirrel-cage motors
At 50 and 60 Hz
NO at 230 V
kW
2.2
3
4
5.5
11
NC at 230 V
kW
2.2
5.5
11
NO at 400 V
kW
4
5.5
7.5
11
18.5
22
NC at 400 V
kW
4
11
7.5
18.5
22
Load rating with DC
Utilization category DC-1,
switching resistive load (
L/R
1 ms)
• Rated operational currents
I
e
(at 60 °C)
-
1 conducting path
Up to 24 V
A
16
20
35
55
60
60 V
A
16
20
20
23
110 V
A
2.1
4.5
220 V
A
0.8
1
440 V
A
0.6
0.4
-
2 conducting paths in series
Up to 24 V
A
16
20
35
55
60 V
A
16
20
35
45
110 V
A
12
35
45
220 V
A
1.6
5
440 V
A
0.8
1
Utilization category DC-3/DC-5
2)
,
shunt-wound and series-wound motors (
L/R
15 ms)
• Rated operational currents
I
e
(at 60 °C)
-
1 conducting path
Up to 24 V
A
16
20
20
35
60 V
A
0.5
5
6
110 V
A
0.15
2.5
220 V
A
0.75
1
440 V
A
--
0.09
0.1
-
2 conducting paths in series
Up to 24 V
A
16
20
35
55
60 V
A
5
35
45
110 V
A
0.35
15
25
220 V
A
--
3
5
440 V
A
--
0.27
© Siemens AG 2016