SIEMENS
5/32
Siemens IC 10 · 2017
* You can order this quantity or a multiple thereof.
Illustrations are approximate.
Contactor Relays
3TH2 Miniature Contactor Relays, 4- and 8-Pole
Accessories for 3TH2 miniature contactor relays
5
1)
The OFF-delay of the NO contact and the ON-delay of the NC contact are
increased if the contactor coils are attenuated against voltage peaks
(suppression diode 6x to 10x; diode assembly 2x to 6x;
varistor +2 to 5 ms).
For contactors
Rated control supply voltage
U
s
Power consumption
of LED at
U
s
SD
Article No.
Price
per PU
PU
(UNIT,
SET,
M)
PS*
PG
Type
V AC
V DC
mW
d
Surge suppressors
1)
For plugging onto 3TH2 miniature contactor relays with and without auxiliary
switch blocks
Version without LED
RC elements
3TH2. . .-0. . .
24 ...
48
24 ...
70
--
5
3TX4490-3R
1
1 unit
41B
48 ... 127
70 ... 150
--
5
3TX4490-3S
1
1 unit
41B
127 ... 240
150 ... 250
--
5
3TX4490-3T
1
1 unit
41B
240 ... 400
--
--
5
3TX4490-3U
1
1 unit
41B
400 ... 600
--
--
5
3TX4490-3V
1
1 unit
41B
Varistors
3TH2. . .-0. . .
48
24 ...
70
--
}
3TX4490-3G
1
1 unit
41B
48 ... 127
70 ... 150
--
5
3TX4490-3H
1
1 unit
41B
127 ... 240
150 ... 250
--
5
3TX4490-3J
1
1 unit
41B
240 ... 400
--
--
5
3TX4490-3K
1
10 units
41B
400 ... 600
--
--
5
3TX4490-3L
1
10 units
41B
3TX4490-3A
Noise suppression diode
3TH2. . .-0. . .
--
12 ... 250
--
}
3TX4490-3A
1
1 unit
41B
Diode assemblies
(diode and Zener diode)
For DC operation and short break times
3TH2. . .-0. . .
--
24 ... 250
--
5
3TX4490-3B
1
1 unit
41B
Version with LED
Varistors
3TH2. . .-0. . .
24 ...
48
12 ...
24
10 ... 120
5
3TX4490-4G
1
1 unit
41B
48 ... 127
24 ...
70
20 ... 470
5
3TX4490-4H
1
1 unit
41B
127 ... 240
70 ... 150
50 ... 700
5
3TX4490-4J
1
1 unit
41B
--
150 ... 250
160 ... 950
20
3TX4490-4K
1
1 unit
41B
Noise suppression diodes
3TH2. . .-0. . .
--
24 ...
70
20 ... 470
5
3TX4490-4A
1
1 unit
41B
--
70 ... 150
50 ... 700
5
3TX4490-4B
1
1 unit
41B
--
150 ... 250
160 ... 950
5
3TX4490-4C
1
1 unit
41B
Additional load modules
For plugging onto 3TH2 miniature contactor relays with and without auxiliary
switch blocks
3TX4490-1J
For increasing the permissible residual current and for limiting the
residual voltage of SIMATIC semiconductor outputs
3TH2. . .-0A. .
230/220, 50 Hz
--
20
3TX4490-1J
1
1 unit
41B
230, 60 Hz
--
230, 50/60 Hz
--
Operating range 0.8 ... 1.1 x
U
s
Plug-in bases with solder pin connections for printed circuit boards,
width 45 mm
3TX4491-2A
For 3TH2 miniature contactor relays;
with flat connectors 1 x 6.3 mm ... 0.8 mm
Rated insulation voltage
U
i
: 400 V (with pollution degree 3);
Rated impulse withstand voltage
U
imp
: 6 kV;
Rated operational current
I
e
6 A;
s
and
u
rated data: max. 300 V, 6 A
3TH20. .-3. . .,
3TH20. .-7. . .
--
--
20
3TX4491-2A
1
5 units
41A
Release tools
For releasing miniature contactor relays from 3TX4491-2A plug-in bases 20
3TX4491-2K
1
1 unit
41A
3TH20. .-7. . .
--
--
© Siemens AG 2016