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Siemens IC 10 · 2017
Overload Relays
SIRIUS 3RU2 Thermal Overload Relays
3RU2 for standard applications
7
General data (continued)
Ambient temperature
• Storage/transport
°C
-55 ... +80
• Operation
°C
-40 ... +70
• Temperature compensation
°C
Up to +60
• Permissible rated current at
-
Temperature inside control cabinet 60 °C
%
100 (current reduction is required above +60 °C)
-
Temperature inside control cabinet 70 °C
%
87
Repeat terminals
• Coil repeat terminals
Yes
Not required
• Auxiliary contact repeat terminal
Yes
Not required
Degree of protection
acc. to IEC 60529
IP20
-
IP20 (front side)
-
Terminal IP00 (use additional terminal
covers for higher degree of protection)
Touch protection
acc. to IEC 60529
Finger-safe
Shock resistance with sine
acc. to IEC 60068-2-27
g
/ms
15/11 (auxiliary contacts 95/96 and 97/98: 8
g
/11 ms)
Electromagnetic compatibility (EMC)
• Interference immunity
Not relevant
• Emitted interference
Not relevant
Resistance to extreme climates – air humidity
%
90
Installation altitude above sea level
m
Up to 2 000
Mounting position
The diagrams show the permissible mounting positions for mounting onto
contactors and stand-alone installation. For mounting position in the hatched area,
a setting correction of 10 % must be implemented.
Stand-alone installation:
Contactor + overload relay:
Type of mounting
For mounting onto contactor or stand-alone installation with terminal support,
screw and snap-on mounting onto standard mounting rail.
Type
3RU2116
3RU2126
3RU2136
3RU2146
Size
S00
S0
S2
S3
Dimensions (W x H x D)
(overload relay with stand-alone installation
support)
• Screw terminals
• Spring-type terminals
mm
mm
45 x 89 x 80
45 x 102 x 79
45 x 97 x 95
45 x 114 x 95
55 x 105 x 117
55 x 105 x 117
70 x 106 x 124
70 x 106 x 124
W
H
D
x 1,1
e
x 1,1
e
0°
90°
90°
x 1,1
e
45°
135°
45°
0°
135°
NSB0_01364
x 1,1
0°
e
135°
22,5°
22,5°
0°
135°
NSB0_01363a
© Siemens AG 2016