SIEMENS
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Siemens IC 10 · 2017
Overload Relays
SIRIUS 3RU2 Thermal Overload Relays
3RU2 for standard applications
7
1)
If two different conductor cross-sections are connected to one clamping
point, both cross-sections must be in the range specified.
Type
3RU2116
3RU2126
3RU2136
3RU2146
Size
S00
S0
S2
S3
Auxiliary circuit
Number of NO contacts
1
Number of NC contacts
1
Auxiliary contacts – assignment
1 NO for the signal "tripped";
1 NC for disconnecting the contactor
Rated insulation voltage
U
i
(pollution degree 3)
V
690
Rated impulse withstand voltage
U
imp
kV
6
Contact rating of the auxiliary contacts
• NC, NO contact with alternating current AC-15,
rated operational current
I
e
at
U
e
-
24 V
A
3
-
120 V
A
3
-
125 V
A
3
-
230 V
A
2
-
400 V
A
1
-
600 V
A
0.75
-
690 V
A
0.75
• NC, NO contacts with DC current DC-13,
rated operational current
I
e
at
U
e
-
24 V
A
1
-
110 V
A
0.22
-
125 V
A
0.22
-
220 V
A
0.11
• Contact reliability (suitability for PLC control; 17 V, 5 mA)
Yes
Short-circuit protection
• With fuse
-
Operational class gG
A
6
- Quick
A
10
• With miniature circuit breaker (C characteristic)
A
6 (up to
I
k
0.5 kA;
U
260 V)
Permissible operational voltage for protective separation between
auxiliary current paths
Acc. to IEC 60947-1
V
440
CSA, UL, UR rated data
Auxiliary circuit – switching capacity
B600, R300
Conductor cross-sections for auxiliary circuit
Connection type
Screw terminals
Terminal screw
M3, Pozidriv size 2
Operating devices
mm
5 ... 6
Prescribed tightening torque
Nm
0.8 ... 1.2
Conductor cross-sections (min./max.),
1 or 2 conductors can be connected
• Solid or stranded
mm
2
2 x (0.5 ... 1.5)
1)
, 2 x (0.75 ... 2.5)
1)
• Finely stranded with end sleeve (DIN 46228-1)
mm
2
2 x (0.5 ... 1.5)
1)
, 2 x (0.75 ... 2.5)
1)
• AWG cables, solid or stranded
AWG
2 x (20 ... 16)
1)
, 2 x (18 ... 14)
1)
Connection type
Spring-type terminals
Operating devices
mm
3.0 x 0.5 and 3.5 x 0.5
Conductor cross-sections (min./max.),
1 or 2 conductors can be connected
• Solid or stranded
mm
2
2 x (0.5 ... 2.5)
• Finely stranded without end sleeve
mm
2
2 x (0.5 ... 2.5)
• Finely stranded with end sleeve (DIN 46228-1)
mm
2
2 x (0.5 ... 1.5)
• AWG cables, solid or stranded
AWG
2 x (20 ... 14)
© Siemens AG 2016