Datasheet
Solid-State Switching Devices for Resistive Loads
Solid-State Relays
SIRIUS 3RF21 solid-state relays,
single-phase, 22.5 mm
4/70
Siemens IC 10 · 2011
* You can order this quantity or a multiple thereof.
Illustrations are approximate
4
Other rated control supply voltages on request.
1)
The type current provides information about the performance capacity of
the solid-state relay. The actual permitted rated operational current I
e
can
be smaller depending on the connection method and cooling conditions.
Type current
1)
Rated control supply voltage U
s
DT Ring terminal lug
connection
PU
(UNIT,
SET, M)
PS* PG
Order No. Price
per PU
AV
Zero-point switching
Rated operational voltage U
e
24 ... 230 V AC
3RF21 20-3AA02
20 24 DC acc. to EN 61131-2 A
3RF21 20-3AA02 1 1 unit 101
50 B
3RF21 50-3AA02 1 1 unit 101
90 B
3RF21 90-3AA02 1 1 unit 101
20 110 ... 230 AC B
3RF21 20-3AA22 1 1 unit 101
50 B
3RF21 50-3AA22 1 1 unit 101
90 B
3RF21 90-3AA22 1 1 unit 101
Zero-point switching
Rated operational voltage U
e
48 ... 460 V AC
20 24 DC acc. to EN 61131-2 B 3RF21 20-3AA04 1 1 unit 101
50 B
3RF21 50-3AA04 1 1 unit 101
90 B
3RF21 90-3AA04 1 1 unit 101
20 110 ... 230 AC B
3RF21 20-3AA24 1 1 unit 101
50 B
3RF21 50-3AA24 1 1 unit 101
90 B
3RF21 90-3AA24 1 1 unit 101
90 4 ... 30 DC B
3RF21 90-3AA44 1 1 unit 101
Zero-point switching · Blocking voltage 1600 V
Rated operational voltage U
e
48 ... 600 V AC
50 24 DC acc. to EN 61131-2 B 3RF21 50-3AA06 1 1 unit 101
90 B
3RF21 90-3AA06 1 1 unit 101
50 110 ... 230 AC B
3RF21 50-3AA26 1 1 unit 101
90 B
3RF21 90-3AA26 1 1 unit 101
Version DT Order No. Price
per PU
PU
(UNIT,
SET, M)
PS* PG
Optional accessories
Spring-type terminals
3RA29 08-1A
Screwdrivers
for all SIRIUS devices with spring-type terminals
Length approx. 200 mm, size 3.0 mm x 0.5 mm,
titanium gray/black, partially insulated
A
3RA29 08-1A 1 1 unit 101
Ring terminal lug
connection
3RF29 00-3PA88
Terminal covers for 3RF21 solid-state relays and 3RF23
solid-state contactors in ring terminal lug connection
(After simple adaptation, this terminal cover can also be
used for screw connection).
A
3RF29 00-3PA88 1 10 units 101
© Siemens AG 2010