3RT, 3RH, 3TB, 3TC, 3TH, 3TK Contactors for Special Applications
Contactors with Extended Tolerance 0.7 ... 1.25 x , for Railway Applications
U
s
3TC contactors for switching DC voltage, 2-pole
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■
Overview
■
Application
EN 60947-4-1.
For operation in plants which are subject both to considerable
variations in the control voltage and to high ambient
temperatures, e.g. in railway applications.
For requirements according to IEC 60077-1 and IEC 60077-2.
The contactors are finger-safe according to EN 50274
(exception: series resistor). Terminal covers may have to be
fitted onto the connecting bars, depending on the configuration
with other devices.
Selection and ordering data
With screw terminals
3TC44: for screw and snap-on mounting onto 35 mm standard mounting rail
3TC48 to 3TC56: for screw fixing
Solenoid fitted with varistor
3TC48
Size
Utilization
category
Rated
Rating of AC loads at
Auxiliary Rated control DT Order No.
Price
per PU
PU
(UNIT,
SET, M)
PS*
PG Weight
per PU
1)
operational
contacts supply
current I at
voltage U
approx.
e
s
750 V
A
220 V 440 V 600 V 750 V
kW
kW
kW
kW
NO
NC V DC
kg
Contactors for switching DC voltage ¼
DC operation · DC solenoid system
2
DC-1
32
7
5
14
9
19.2 24
2
2
2
2
1
1
1
1
24
B
C
3TC44 17-0LB4
3TC44 17-0LF4
1
1
1 unit 101
1 unit 101
1.321
1.310
DC-3/DC-5 7.5
9
4
110
4
DC-1 75
DC-3/DC-5 75
16.5 33
13
45
38
56
45
24
110
C
C
3TC48 17-0LB4
3TC48 17-0LF4
1
1
1 unit 101
1 unit 101
4.857
3.710
27
8
DC-1
DC-3/DC-5 170
170
48
41
97
82
132
110
165
110
24
110
C
C
3TC52 17-0LB4
3TC52 17-0LF4
1
1
1 unit 101 10.722
1 unit 101 10.830
12
DC-1
DC-3/DC-5 400
400
88
70
176
140
240
200
300
250
24
110
C
C
3TC56 17-0LB4
3TC56 17-0LF4
1
1
1 unit 101 24.150
1 unit 101 18.190
1) The number of auxiliary contacts cannot be increased.
* You can order this quantity or a multiple thereof.
Siemens LV 1 · 2006
3/74
SIEMENS [ Siemens Semiconductor Group ]
