3RT, 3RH, 3TB, 3TC, 3TH, 3TK Contactors for Special Applications
Contactors with Extended Tolerance 0.7 ... 1.25 x U
s
, for Railway Applications
3TC contactors for switching DC voltage, 2-pole
■
Overview
EN 60947-4-1.
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.
■
Application
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.
■
Selection and ordering data
3
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
operational
current
I
e
at
750 V
A
Rating of AC loads at
Auxiliary Rated control DT Order No.
contacts
1)
supply
voltage
U
s
kW
NO
NC V DC
Price
per PU
PU
PS*
(UNIT,
SET, M)
PG
Weight
per PU
approx.
kg
220 V 440 V 600 V 750 V
kW
kW
kW
Contactors for switching DC voltage
¼
DC operation · DC solenoid system
2
4
8
12
DC-1
DC-3/DC-5
DC-1
DC-3/DC-5
DC-1
DC-3/DC-5
DC-1
DC-3/DC-5
32
7.5
75
75
170
170
400
400
7
5
16.5
13
48
41
88
70
14
9
33
27
97
82
176
140
19.2
9
45
38
132
110
240
200
24
4
56
45
165
110
300
250
2
2
2
2
1
1
1
1
24
110
24
110
24
110
24
110
B
C
C
C
C
C
C
C
3TC44 17-0LB4
3TC44 17-0LF4
3TC48 17-0LB4
3TC48 17-0LF4
3TC52 17-0LB4
3TC52 17-0LF4
3TC56 17-0LB4
3TC56 17-0LF4
1 1 unit
1 1 unit
1 1 unit
1 1 unit
1 1 unit
1 1 unit
1 1 unit
1 1 unit
101
101
101
101
101
101
101
101
1.321
1.310
4.857
3.710
10.722
10.830
24.150
18.190
1) The number of auxiliary contacts cannot be increased.
* You can order this quantity or a multiple thereof.
3/74
Siemens LV 1 · 2006
SIEMENS [ Siemens Semiconductor Group ]
