Siemens sirius System Manual page 287

3RU11, 3RB10, and 3RB12 overload relays
Type
Width
Main circuit
Rated insulation voltage U (pollution degree 3)
i
Rated impulse strength U
imp
Rated operating voltage U
e
Current type
Current setting
Power loss per device (max.)
Short-circuit protection
Safe isolation between
main and auxiliary conducting paths
Connection of the main circuit
Connection type
Screw-type terminal
• Terminal screw
• Tightening torque
• Connection cross-section
(min./max.), 1 or 2 conductors
Bar connection
• Terminal screw
• Tightening torque
• Connection cross-section
(min./max.)
Bar-type transformer connection
• Opening diameter
• Conductor cross-section
•
4-48
Direct current
Alternating current
With fuse, without contactor
With fuse and contactor
In acc. with DIN VDE 0106 Part 101
IEC 60 947-1-A1
Single-core
Finely stranded without wire end ferrule mm
Finely stranded with wire end ferrule
Stranded
AWG cables, single- or multi-core
Ribbon cables (number x width x depth) mm
Finely stranded with cable lug
Stranded with cable lug
AWG cables, single-core or stranded
with cable lug
With connecting bars (max. width)
NYY
H07RN-F
3RB12 46 3RB12 53
70 mm 120 mm
V 690 (for bare/ 1000
uninsulated
conductors)
1000 (for insula-
ted conductors)
8
kV 6
1000
V 690
No
Yes, 50/60 Hz
A 1.25 - 6.3 50 - 205
Up to 25 - 100
W Approx. 2
See the selection and ordering data in the NSK catalog as of page 4/4
See the technical specifications (short-circuit protection with fuses
for motor feeders)
V Up to 690 V Up to 690
(using main cir-
cuit cables with
an impulse with-
stand voltage of
6 kV)
Bar connection
Bar-type trans-
former connec-
tion
-
Nm -
2
mm -
2
-
2
mm -
2
mm -
2
mm -
2
mm -
AWG -
AWG -
-
- M8
Nm - 10 to 14
2
mm - 35 to 95
2
mm - 50 to 120
AWG - 1/0 to 250 kcmil 2/0 to 500 kcmil 2/0 to 500 kcmil
mm - 20 x 4
10 (devices ≤
mm -
25 A max. set
current I )
e
15 (devices with
max. 100 A set
current I )
e
2
mm - -
10/16 -
3RB12 57 3RB12 62
145 mm 230 mm
125 - 500 200 - 820
M10 M 10 or M 12
14 to 24 14 to 24 (with
M10)
20 to 25 (with
M12)
50 to 240
70 to 240 185 to 240
30 x 6 40 x 8
SIRIUS System Manual
GWA 4NEB 430 0999-02b