SIEMENS
6/62
Siemens IC 10 · 2017
Solid-State Switching Devices for Resistive/Inductive Loads
Solid-State Relays
SIRIUS 3RF21 solid-state relays, single-phase, 22.5 mm
6
1)
The current
I
max
provides information about the performance of the solid-
state relay. The actual permitted rated operational current
I
e
can be
smaller depending on the connection method and cooling conditions.
Note:
The required heat sinks for the corresponding load currents can
be determined from the characteristic curves
(see page 6/59,
"More Information")
. The minimum thickness values for the
mounting surface must be observed.
1)
Applies to the "Low Power" version 3RF21..-.AA..-
0KN0
.
2)
Only for zero-point switching devices.
Type
I
max
1)
I
e
acc. to IEC 60947-4-3
I
e
acc. to UL/CSA
Power loss
at
I
max
Minimum load
current
Off-state current
at
R
thha
/
T
u
= 40 °C
at
R
thha
/
T
u
= 40 °C
at
R
thha
/
T
u
= 50 °C
A
K/W
A
K/W
A
K/W
W
A
mA
Main circuit
3RF2120-
.....
20
2.0
20
1.7
20
1.3
28.6
0.1
10
3RF2130-1
....
30
1.1
30
0.79
30
0.56
44.2
0.5
10
3RF2150-1
....
50
0.68
50
0.48
50
0.33
66
0.5
10
3RF2150-2
....
50
0.68
20
2.6
20
2.9
66
0.5
10
3RF2150-3
....
50
0.68
50
0.48
50
0.33
66
0.5
10
3RF2170-1
....
70
0.40
50
0.77
50
0.6
94
0.5
10
3RF2190-1
....
88
0.33
50
0.94
50
0.85
118
0.5
10
3RF2190-2
....
88
0.33
20
2.8
20
3.5
118
0.5
10
3RF2190-3
....
88
0.33
88
0.22
83
0.19
118
0.5
10
Type
Rated peak withstand current
I
tsm
I
2
t
value
A
A
2
s
Main circuit
3RF2120-
.....
200
200
3RF2130-..A.2
300
450
3RF2130-..A.4
300
450
3RF2130-..A.5
300
450
3RF2130-..A.6
400
800
3RF2150-
.....
600
1 800
3RF2170-..A.2
1 200
7 200
3RF2170-..A.4
1 200
7 200
3RF2170-..A.5
1 200
7 200
3RF2170-..A.6
1150
6 600
3RF2190-
.....
1150
6 600
Type
3RF21..-
....
2
3RF21..-
....
4
3RF21..-
....
5
3RF21..-
....
6
Main circuit
Rated operational voltage
U
e
V AC
24 ... 230
48 ... 460
• Operating range
V AC
20 ... 253
40 ... 506
40 ... 660
• Rated frequency
Hz
50/60
10 %
Rated insulation voltage
U
i
V
600
Blocking voltage
V
800
1 200
1 600
Rate of voltage rise
V/μs
1 000
Type
3RF21..-...0.
3RF21..-...1.
3RF21..-...2.
3RF21..-...4.
Control circuit
Method of operation
DC operation
AC/DC operation
AC operation
DC operation
Rated control supply voltage
U
s
V
24
24 AC
24 DC
110 ... 230
4 ... 30
Rated frequency
of the control supply voltage
Hz
--
50/60
10%
--
50/60
10 %
--
Control supply voltage, max.
V
30
26.5 AC
30 DC
253
30
Typical actuating current
mA
20 / Low Power: 6.5
1)
20
15
20
Response voltage
V
15
14 AC
15 DC
90
4
Drop-out voltage
V
5
5 AC
5 DC
40
1
Operating times
• ON-delay
ms
1 + max. one
half-wave
2)
10 + max. one
half-wave
2)
40 + max. one
half-wave
2)
1 + max. one
half-wave
2)
• OFF-delay
ms
1 + max. one
Half-wave
15 + max. one
Half-wave
40 + max. one
Half-wave
1 + max. one
Half-wave
© Siemens AG 2016