SIEMENS
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Siemens IC 10 · 2017
* You can order this quantity or a multiple thereof.
Illustrations are approximate.
Power Contactors for Switching Motors
Accessories and Spare Parts for SIRIUS 3RT12 and 3TF6 Vacuum Contactors
Accessories
3
For contactors
Version
SD
Article No.
Price
per PU
PU
(UNIT,
SET,
M)
PS*
PG
Size
Type
d
Main current path surge suppression modules
S10/
S12
3RT12
For damping overvoltages and protecting motor
windings against multiple re-ignition when switching off
three-phase motors
For connection on the contactor feeder side
(2-T1/4-T2/6-T3), for separate installation
Rated operational voltage
U
e
• 690 V AC
10
3RT1966-1PV3
1
1 unit
41B
• 1 000 V AC
10
3RT1966-1PV4
1
1 unit
41B
Surge suppressors
3TX7572-3.
14
3TF68,
3TF69
Varistors
AC operation
The surge suppressor (varistor) is included in the
scope of supply of the 3TF68 and 3TF69 contactors with
AC operation.
DC operation
DC economy circuit
Varistor for snapping onto the side of the auxiliary switch
(includes the peak value of the alternating voltage on the
DC side)
Rated control supply voltage
U
s
• 24 ... 48 V DC
15
3TX7572-3G
1
1 unit
41B
• 48 ... 127 V DC
20
3TX7572-3H
1
1 unit
41B
• 127 ... 240 V DC
15
3TX7572-3J
1
1 unit
41B
Terminal covers
3TX76.6-0A
14
2 units required per contactor (1 set = 2 units).
3TF68
For protection against inadvertent contact with exposed
busbar connections
5
3TX7686-0A
1
1 unit
41B
3TF69
Can be screwed onto free screw end on middle
connecting bar
5
3TX7696-0A
1
1 unit
41B
Links for paralleling (star jumpers), 3-pole
14
3TF68,
3TF69
Links for paralleling
Without connecting terminal (the link for paralleling can
be reduced by one pole)
5
3TX7680-0D
1
1 unit
41B
14
3TF68,
3TF69
Cover plates for links for paralleling
15
3TX7680-0E
1
1 unit
41B
A cover plate must be used to protect against
inadvertent contact with exposed busbar connections
(IEC 60529).
Box terminals for laminated copper bars
14
3TF68
Without auxiliary conductor connection
(1 set = 3 units)
30
3TX7570-1E
1
1 unit
41B
With single covers for protection against inadvertent
contact (IEC 60529)
14
3TF69
With auxiliary conductor connection
(1 set = 3 units)
30
3TX7690-1F
1
1 unit
41B
Conductor cross-sections for auxiliary conductors:
• Solid 2 x (0.75 ... 2.5) mm
2
• Finely stranded with end sleeve 2 x (0.5 ... 2.5) mm
2
• AWG, solid or stranded 2 x (18 ... 12)
• Tightening torque 0.8 ... 1.4 Nm (7 ... 12 lb.in)
Locking devices for mechanical interlock
14
3TF68
For two contactors of the same size
15
3TX7686-1A
1
1 unit
41B
© Siemens AG 2016