SIEMENS
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Siemens IC 10 · 2017
Power Contactors for Switching Motors
SIRIUS 3RT12 and 3TF6 vacuum contactors
3
1)
When connecting cable lugs according to DIN 46234, the 3RT1966-4EA1
terminal cover must be used for conductor cross-sections of 240 mm² and
more as well as DIN 46235 for conductor cross-sections of 185 mm² and
more to keep to the phase clearance;
see page 3/116
.
2)
If two different conductor cross-sections are connected to one clamping
point, both cross-sections must lie in one of the ranges specified.
SIRIUS vacuum contactors
Vacuum contactors
Type
3RT126.
3RT127.
3TF68
3TF69
Size
S10
S12
14
Conductor cross-sections
Main conductors
(1 or 2 conductors connectable)
Screw terminals
With mounted box terminals
Type
3RT1966-4G
--
• Terminal screws
M12 (hexagon
socket, A/F 5)
--
-
Tightening torque
Nm
20 ... 22 (180 ... 195 lb.in)
--
Front clamping point connected
• Finely stranded with end sleeve (DIN 46228-1)
mm²
70 ... 240
--
• Finely stranded without end sleeve
mm²
70 ... 240
--
• Stranded
mm²
95 ... 300
--
• AWG cables, solid or stranded
AWG
3/0 ... 600 kcmil
--
• Ribbon cable conductors
(Number x Width x Thickness)
mm
Min. 6 x 9 x 0.8; max. 20 x 24 x 0.5
--
Rear clamping point connected
• Finely stranded with end sleeve (DIN 46228-1)
mm²
120 ... 185
--
• Finely stranded without end sleeve
mm²
120 ... 185
--
• Stranded
mm²
120 ... 240
--
• AWG cables, solid or stranded
AWG
250 ... 500 kcmil
--
• Ribbon cable conductors
(Number x Width x Thickness)
mm
Min. 6 x 9 x 0.8; max. 20 x 24 x 0.5
--
Both clamping points connected
• Finely stranded with end sleeve (DIN 46228-1)
mm²
Min. 2 x 50, max. 2 x 185
--
• Finely stranded without end sleeve
mm²
Min. 2 x 50, max. 2 x 185
--
• Stranded
mm²
Min. 2 x 70, max. 2 x 240
--
• AWG cables, solid or stranded
AWG
Min. 2 x 2/0, max. 1 x 500 kcmil
--
• Ribbon cable conductors
(Number x Width x Thickness)
mm
Max. 2 x (20 x 24 x 0.5)
--
Cable lug connection
• Finely stranded with cable lug
1)
mm²
50 ... 240
--
• Stranded with cable lug
1)
mm²
70 ... 240
--
• AWG cables, solid or stranded
AWG
2/0 ... 500 kcmil
--
• Terminal screws
M10 x 30 (A/F 17)
--
-
Tightening torque
Nm
14 ... 24 (124 ... 210 lb.in)
--
Busbar connections
• Finely stranded with cable lug
mm
2
--
50 ... 240
• Stranded with cable lug
mm
2
--
70 ... 240
50 ... 240
• Solid or stranded
AWG
--
2/0 ... 500 MCM
2/0 ... 500 MCM
• Connecting bar (max. width)
mm
25
50
60 (
U
e
690 V),
50 (
U
e
> 690 V)
• Terminal screws
--
M10 x 30
M12 x 40
-
Tightening torque
Nm
--
14 ... 24
20 ... 35
lb.in
--
124 ... 210
177 ... 310
With box terminal
(see page 3/138)
• Connectable laminated copper bars
--
Yes
• Width
mm
--
15 ... 25
15 ... 38
• Max. thickness
mm
--
1 x 26 or 2 x 11
1 x 46 or 2 x 18
• Terminal screw
--
A/F 6 (hexagon
socket)
A/F 8 (hexagon
socket)
• Tightening torque
Nm
--
25 ... 40
(221 ... 354 lb.in)
35 ... 50
(266 ... 443 lb.in)
Auxiliary conductors
(1 or 2 conductors connectable)
• Solid
mm
2
2 x (0.5 ... 1.5)
2)
; 2 x (0.75 ... 2.5)
2)
according to IEC 60947;
max. 2 x (0.75 ... 4)
2 x (0.5 ... 1)
2)
/2 x (1 ... 2.5)
2)
• Finely stranded with end sleeve (DIN 46228-1)
mm
2
2 x (0.5 ... 1.5)
2)
; 2 x (0.75 ... 2.5)
2)
2 x (0.5 ... 1)
2)
, 2 x (0.75 ... 2.5)
2)
• Pin-end connector to DIN 46231
mm
2
--
2 x (1 ... 1.5)
• AWG cables, solid or stranded
AWG
2 x (18 ... 14)
2 x (18 ... 12)
• Terminal screws
M3 (Pozidriv size 2)
--
-
Tightening torque
Nm
0.8 ... 1.2 (7 ... 10.3 lb.in)
0.8 ... 1.4 (7 ... 12 lb.in)
NSB0_00479
NSB0_00480
NSB0_00481
© Siemens AG 2016