Accessories and Spare Parts
For 3T Contactors and Contactor Relays
Accessories for 3TH contactor relays
For contactor Rated control supply voltage Power
DT Order No.
Price
per PU
PU
(UNIT,
SET, M)
PS*
PG
Weight
per PU
approx.
U
consump-
tion of LED
at U
s
s
Type
V AC
V DC
MW
kg
Surge suppressors1)
For plugging onto contactors with and without
auxiliary switch blocks
Version without LED
RC elements
3TH2. ..-0...
24 ... 48
48 ... 127
127 ... 240
24 ... 70
70 ... 150
150 ... 250
--
--
--
B
B
B
3TX4 490-3R
3TX4 490-3S
3TX4 490-3T
1
1
1
10 units
1 unit
1 unit
101
101
101
0.010
0.010
0.010
240 ... 400
400 ... 600
--
--
--
--
B
B
3TX4 490-3U
3TX4 490-3V
1
1
1 unit
1 unit
101
101
0.014
0.015
3TX4 490-3A
Varistors
3TH2. ..-0...
48
48 ... 127
127 ... 240
24 ... 70
70 ... 150
150 ... 250
--
--
--
B
B
B
3TX4 490-3G
3TX4 490-3H
3TX4 490-3J
1
1
1
1 unit
1 unit
1 unit
101
101
101
0.010
0.010
0.010
240 ... 400
400 ... 600
--
--
--
--
B
B
3TX4 490-3K
3TX4 490-3L
1
1
10 units
10 units
101
101
0.016
0.016
Noise suppression diodes
3TH2. ..–0... --
12 ... 250
--
--
B
B
3TX4 490-3A
3TX4 490-3B
1
1
1 unit
1 unit
101
101
0.010
0.009
Diode assemblies (diode and Zener diode)
For DC operation and short break times
3TH2. ..–0...
--
24 ... 250
Version with LED
Varistors
3TH2. ..-0...
24 ... 48
12 ... 24
10 ... 12
B
B
B
3TX4 490-4G
3TX4 490-4H
3TX4 490-4J
3TX4 490-4K
1
1
1
1
1 unit
1 unit
1 unit
1 unit
101
101
101
101
0.009
0.009
0.010
0.009
48 ... 27
127 ... 240
--
24 ... 70
20 ... 470
50 ... 700
70 ... 150
150 ... 250
160 ... 950 B
3TX4 490-4G
Noise suppression diodes
3TH2. ..-0...
--
--
--
24 ... 70
70 ... 150
150 ... 250
20 ... 470
50 ... 700
B
B
3TX4 490-4A
3TX4 490-4B
3TX4 490-4C
1
1
1
1 unit
1 unit
1 unit
101
101
101
0.009
0.009
0.009
160 ... 950 B
Additional load modules (residual current)
For plugging onto contactors with and without auxiliary switch blocks
For increasing the permissible residual current
and for limiting the residual voltage of SIMATIC
semiconductor outputs
3TH2. ..-0A
230/220, 50 Hz
230, 60 Hz
--
--
--
B
3TX4 490-1J
1
1 unit
101
0.011
230, 50/60 Hz
Operating range 0.8 ... 1.1 x U
s
Plug-in bases with solder pin connectors for printed circuit boards,
width 45 mm
For 3TH2 contactor relays;
With flat connectors 1 x 6.3 mm ... 0.8 mm;
Rated insulation voltage U : 400 V (pollution degree 3);
i
Rated impulse withstand voltage U : 6 kV;
imp
Rated operating current I : 6 A;
e
s and U rated data: max. 300 V, 6 A
3TH20 ..-3,
3TH20 ..-7
A
3TX4 491-2A
1
5 units
101
0.032
1) The opening delay of the NO contact and the closing delay of the NC
contact are increased if the contactor coils are attenuated against voltage
peaks (noise suppression diode 6 to 10 times; diode assemblies 2 to
6 times, varistor +2 to 5 ms).
* You can order this quantity or a multiple thereof.
Siemens LV 1 · 2006
3/141
SIEMENS [ Siemens Semiconductor Group ]
