Accessories and Spare Parts
For 3T Contactors and Contactor Relays
Spare parts for 3TB, 3TC, 3TF, 3TK contactors
For
contactor
Version
Rated control DT Order No.
supply
Price
per PU
PU
(UNIT,
SET, M)
PS*
PG
Weight
per PU
approx.
voltage U
s
Type
V AC/DC
kg
Varistors
3TC7
For sticking onto the
contactor base
24
110
C
C
3TX2 746-2F
3TX2 746-2G
1
1
1 unit
1 unit
101
101
0.011
0.011
Contacts with fixing parts
3TC7
Main contacts (1 set)
For 3TC78: 2 units required
per contactor
B
3TY2 740-0E
1
1 set
101
0.356
Auxiliary switch blocks
3TC74
4 NO +4 NC
B
C
3TY2 741-2J
3TY2 781-2C
1
1
1 unit
1 unit
101
101
0.265
0.186
3TC78
Auxiliary contact, left, with
2 NO +2 NC
Auxiliary contact, right, with
2 NO +2 NC
C
3TY2 781-2D
1
1 unit
101
0.184
Arc chutes
3TC7
For 3TC78: 2 units required
per contactor
C
3TY2 742-0C
1
1 unit
101
3.916
For contactor
Contacts
Version
DT Order No.
Price
per PU
PU
(UNIT,
SET, M)
PS*
PG
Weight
per PU
approx.
Size
Type
NO NC NC
kg
Auxiliary switch blocks
With screw terminals
14
3TF68
and
3TF69
1
1
--
1st auxiliary switch
block, left or right
Replacement for:
3TY7 561-1A/-1B.
B
3TY7 561-1AA00
1
1 unit
101
0.048
1
1
--
1
1
Auxiliary switch block,
left or right
B
B
3TY7 561-1EA00
3TY7 561-1KA00
1
1
1 unit
1 unit
101
101
0.048
0.050
3TY7 561-1.
--
2nd auxiliary switch
block, left or right
Replacement for:
3TY7 561-1K/-1L.
For coil reconnection with DC economy circuit,
with screw terminals
14
3TF68
and
3TF69
--
--
1
Auxiliary contact block
C
3TY7 681-1G
1
1 unit
101
0.050
For contactor
Version
DT Order No.
Price
per PU
PU
(UNIT,
SET, M)
PS*
PG
Weight
per PU
approx.
Size
Type
kg
Magnetic coils
AC operation
14
3TF68
3TF69
The coils are fitted as standard with
varistors against overvoltage. The coil is C
supplied with switch-on electronics.
C
3TY7 683-0C..
3TY7 693-0C..
1
1
1 unit
1 unit
101
101
0.650
0.650
DC operation · DC economy circuit
14
3TF68
3TF69
Reversing contactors are required for
size 14 contactors:
C
C
3TY7 683-0D..
3TY7 693-0D..
1
1
1 unit
1 unit
101
101
0.560
0.560
Contactor type 3TF68 and 3TF69
Reversing contactor 3TC44
(70 mm wide, 85 mm high)
The coils are supplied without reversing
contactor.
3TY7.
Vacuum interrupters
In order to ensure reliable operation of the contactors, only
original replacement interrupters from Siemens should be
used.
14
3TF68
3TF69
3 vacuum interrupters with mounting
parts
B
B
3TY7 680-0B
3TY7 690-0B
1
1
1 set
1 set
101
101
3.490
3.638
For rated control supply voltages for coils, see page 3/146.
For solid-state compatible auxiliary switch blocks,
see page 3/135.
* You can order this quantity or a multiple thereof.
Siemens LV 1 · 2006
3/144
SIEMENS [ Siemens Semiconductor Group ]
