Datasheet

Solid-State Switching Devices for Resistive Loads
Solid-State Relays
SIRIUS 3RF21 solid-state relays,
single-phase, 22.5 mm
4/67
Siemens IC 10 · 2011
4
1)
I
max
provides information about the performance of the solid-state relay.
The actual permitted rated operational current I
e
can be smaller depend-
ing 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 note on
Technical Information, page 4/1). The minimum thickness values
for the mounting surface must be observed.
1)
Applies to the version "Low Power" 3RF21 ..-.AA..-0KN0.
2)
Only for zero-point-switching devices.
Order No. 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
Leakage current
at R
thha
/T
u
= 40 °C at R
thha
/T
u
= 40 °C at R
thha
/T
u
= 50 °C
AK/WAK/WAK/WW A mA
Main circuit
3RF21 20-..... 20 2.0 20 1.7 20 1.3 28.6 0.1 10
3RF21 30-1....
30 1.1 30 0.79 30 0.56 44.2 0.5 10
3RF21 50-1....
50 0.68 50 0.48 50 0.33 66 0.5 10
3RF21 50-2....
50 0.68 20 2.6 20 2.9 66 0.5 10
3RF21 50-3....
50 0.68 50 0.48 50 0.33 66 0.5 10
3RF21 70-1....
70 0.40 50 0.77 50 0.6 94 0.5 10
3RF21 90-1....
88 0.33 50 0.94 50 0.85 118 0.5 10
3RF21 90-2....
88 0.33 20 2.8 20 3.5 118 0.5 10
3RF21 90-3....
88 0.33 88 0.22 83 0.19 118 0.5 10
Order No. Rated impulse withstand capacity I
tsm
I
2
t value
AA
2
s
Main circuit
3RF21 20-..... 200 200
3RF21 30-..A.2
300 450
3RF21 30-..A.4
300 450
3RF21 30-..A.5
300 450
3RF21 30-..A.6
400 800
3RF21 50-.....
600 1800
3RF21 70-..A.2
1200 7200
3RF21 70-..A.4
1200 7200
3RF21 70-..A.5
1200 7200
3RF21 70-..A.6
1150 6600
3RF21 90-.....
1150 6600
Type 3RF21 ..-....2 3RF21 ..-....4 3RF21 ..-....5 3RF21 ..-....6
Main circuit
Rated operational voltage U
e
V AC 24 ... 230 48 ... 460 48 ... 600 48 ... 600
• Operating range V AC
20 ... 253 40 ... 506 40 ... 660 40 ... 660
• Rated frequency Hz
50/60 ± 10 %
Rated insulation voltage U
i
V 600
Blocking voltage V
800 1200 1600
Rage of voltage rise V/µs
1000
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 acc. to EN 61131-2 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 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 2010