SIEMENS
6/67
Siemens IC 10 · 2017
Solid-State Switching Devices for Resistive/Inductive Loads
Solid-State Relays
SIRIUS 3RF20 solid-state relays, single-phase, 45 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)
Only for zero-point switching devices.
Circuit diagrams
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
3RF2020-1.A..
20
2.0
20
1.7
20
1.3
28.6
0.1
10
3RF2030-1.A..
30
1.1
30
0.79
30
0.56
44.2
0.5
10
3RF2050-1.A..
50
0.68
50
0.48
50
0.33
66
0.5
10
3RF2070-1.A..
70
0.40
50
0.77
50
0.6
94
0.5
10
3RF2090-1.A..
88
0.33
50
0.94
50
0.85
118
0.5
10
Type
Rated peak withstand current
I
tsm
I
2
t value
A
A²s
Main circuit
3RF2020-1.A..
200
200
3RF2030-1.A.2
300
450
3RF2030-1.A.4
300
450
3RF2030-1.A.6
400
800
3RF2050-1.A..
600
1 800
3RF2070-1.A.2
1 200
7 200
3RF2070-1.A.4
1 200
7 200
3RF2070-1.A.5
1 200
7 200
3RF2070-1.A.6
1 150
6 600
3RF2090-1.A..
1 150
6 600
Type
3RF20.0-1.A.2
3RF20.0-1.A.4
3RF20.0-1.A.5
3RF20.0-1.A.6
Main circuit
Rated operational voltage
U
e
V AC
24 ... 230
48 ... 460
48 ... 600
• 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/
s
1 000
Type
3RF20.0-1.A0.
3RF20.0-1.A2.
3RF20.0-1.A4.
Control circuit
Method of operation
DC operation
AC operation
DC operation
Rated control supply voltage
U
S
V
24
110 ... 230
4 … 30
Rated frequency
of the control supply
voltage
Hz
--
50/60
10 %
--
Control supply voltage, max.
V
30
253
30
Typical actuating current
mA
20
15
20
Response voltage
V
15
90
4
Drop-out voltage
V
5
40
1
Operating times
• ON-delay
ms
1 + max. one half-wave
1)
40 + max. one half-wave
1)
1 + max. one half-wave
1)
• OFF-delay
ms
1 + max. one half-wave
40 + max. one half-wave
1 + max. one half-wave
DC control supply voltage
AC control supply voltage
A1 +
A2 -
1
L
2
T
NSB0_01462
A1
A2
1
L
2
T
NSB0_01463
© Siemens AG 2016