SIEMENS
4/10
Siemens IC 10 · 2017
Contactors for Special Applications
SIRIUS 3RT.4 contactors for resistive loads (AC-1), 3-pole
4
1)
3RT1456: When connecting cable lugs according to EN 46235,
use the 3RT1956-4EA1 terminal cover for conductor cross-sections
from 95 mm
2
to keep the phase clearance;
see page 3/116
.
2)
3RT1466 and 3RT1476: 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 the phase clearance;
see page 3/116
.
3)
If two different conductor cross-sections are connected to one clamping
point, both cross-sections must lie in one of the ranges specified.
4)
Max. external diameter of the conductor insulation: 3.6 mm.
An "insulation stop" must be used for conductor cross-sections
1 mm²;
see page 3/119
.
5)
Tool for opening the spring-type terminals:
see page 3/119
.
Type
3RT1456
3RT1466
3RT1476
Size
S6
S10
S12
Conductor cross-sections
Main conductors
(1 or 2 conductors can be connected)
Screw terminals
With mounted box terminals
Type
3RT1955-4G
3RT1956-4G
3RT1966-4G
Terminal screws
M10 (hexagon socket,
A/F 4)
M10 (hexagon socket,
A/F 4)
M12 (hexagon socket,
A/F 5)
• Tightening torque
Nm
10 ... 12
10 ... 12
20 ... 22
lb.in
90 ... 110
90 ... 110
180 ... 195
Front clamping point connected
• Finely stranded with end sleeve (DIN 46228-1)
mm²
16 ... 70
16 ... 120
70 ... 240
• Finely stranded without end sleeve
mm²
16 ... 70
16 ... 120
70 ... 240
• Stranded
mm²
16 ... 70
16 ... 120
95 ... 300
• AWG cables, solid or stranded
AWG
6 ... 2/0
6 ... 250 kcmil
3/0 ... 600 kcmil
• Ribbon cable conductors
(Number x Width x Thickness)
mm
Min. 3 x 9 x 0.8,
max. 6 x 15.5 x 0.8
Min. 3 x 9 x 0.8,
max. 10 x 15.5 x 0.8
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
16 ... 70
16 ... 120
120 ... 185
• Finely stranded without end sleeve
mm²
16 ... 70
16 ... 120
120 ... 185
• Stranded
mm²
16 ... 70
16 ... 120
120 ... 240
• AWG cables, solid or stranded
AWG
6 ... 2/0
6 ... 250 kcmil
250 ... 500 kcmil
• Ribbon cable conductors
(Number x Width x Thickness)
mm
Min. 3 x 9 x 0.8,
max. 6 x 15.5 x 0.8
Min. 3 x 9 x 0.8,
max. 10 x 15.5 x 0.8
Min. 6 x 9 x 0.8,
max. 20 x 24 x 0.5
Both clamping points connected
(minimum cross-section 16 mm²)
• Finely stranded with end sleeve (DIN 46228-1)
mm²
Max. 1 x 50, 1 x 70
Max. 1 x 95, 1 x 120
Min. 2 x 50, max. 2 x 185
• Finely stranded without end sleeve
mm²
Max. 1 x 50, 1 x 70
Max. 1 x 95, 1 x 120
Min. 2 x 50, max. 2 x 185
• Stranded
mm²
Max. 1 x 50, 1 x 70
Max. 1 x 95, 1 x 120
Min. 2 x 70, max. 2 x 240
• AWG cables, solid or stranded
AWG
Max. 2 x 1/0
Max. 2 x 3/0
Min. 2 x 2/0,
max. 2 x 500 kcmil
• Ribbon cable conductors
(Number x Width x Thickness)
mm
Max. 2 x (6 x 15.5 x 0.8)
Max. 2 x (10 x 15.5 x 0.8)
Max. 2 x (20 x 24 x 0.5)
Busbar connections
• Connecting bar (max. width)
mm
17
25
Cable lug connection
1)
2)
• Finely stranded with cable lug
mm²
16 ... 95
50 ... 240
• Stranded with cable lug
mm²
25 ... 120
70 ... 240
• AWG cables, solid or stranded
AWG
4 ... 250 kcmil
2/0 ... 500 kcmil
• Terminal screws
M8 x 25 (A/F 13)
M10 x 30 (A/F 17)
-
Tightening torque
Nm
10 ... 14
14 ... 24
lb.in
90 ... 124
124 ... 210
Auxiliary conductors
(1 or 2 conductors can be connected)
• Solid
mm²
2 x (0.5 ... 1.5)
3)
, 2 x (0.75 ... 2.5)
3)
acc. to IEC 60947;
max. 2 x (0.75 ... 4)
3)
• Finely stranded with end sleeve (DIN 46228-1)
mm²
2 x (0.5 ... 1.5)
3)
; 2 x (0.75 ... 2.5)
3)
• AWG cables, solid or stranded
AWG
2 x (18 ... 14)
• Terminal screws
M3 (Pozidriv size 2)
-
Tightening torque
Nm
0.8 ... 1.2
lb.in
7 ... 10.3
Auxiliary conductors
4)
(1 or 2 conductors can be connected)
Spring-type terminals
• Operating tool
5)
3.0 x 0.5; 3.5 x 0.5
• Solid
mm
2
2 x (0.25 ... 2.5)
• Finely stranded with end sleeve (DIN 46228-1)
mm
2
2 x (0.25 ... 1.5)
• Finely stranded without end sleeve
mm
2
2 x (0.25 ... 2.5)
• AWG cables, solid or stranded
AWG
2 x (24 ... 14)
NSB0_00479
NSB0_00480
NSB0_00481
© Siemens AG 2016