SIEMENS
10/49
Siemens IC 10 · 2017
Relays
Timing Relays
SIRIUS 3RP20 timing relays, 45 mm
10
■
Benefits
•
Suitable for 3RT miniature contactors
•
Uniform design
•
Ideal for small distance between standard mounting rails
and/or for low mounting depth, e.g. in control boxes
■
Application
Timing relays are used in control, starting, and protective circuits
for all switching operations involving time delays. They guaran-
tee a high level of functionality and a high repeat accuracy of
timer settings.
■
Technical specifications
1)
If nothing else is stated.
2)
If two different conductor cross-sections are connected to one clamping
point, both cross-sections must lie in one of the ranges specified.
More information
Technical specifications
, see
Operating Instructions,
see
Internal circuit diagrams,
see
FAQs,
Type
3RP2005,
3RP2025
Dimensions (W x H x D)
mm
45 x 57 x 73
Rated insulation voltage
Pollution degree 3
Overvoltage category III
V AC
300
Permissible ambient temperature
• During operation
°C
-25 ... +60
• During storage
°C
-40 ... +85
Operating range of excitation
1)
0.85 ... 1.1 x
U
s
at AC; 0.8 ... 1.25 x
U
s
at DC;
0.95 ... 1.05 times the rated frequency
Mechanical endurance
Oper-
ating
cycles
10 x 10
6
Electrical endurance
at
I
e
Oper-
ating
cycles
1 x 10
5
Connection type
Screw terminals
• Terminal screw
M3 (for standard screwdriver, size 2 and Pozidriv 2)
• Solid
mm
2
2 x (0.5 ... 1.5)
2)
, 2 x (0.75 ... 2.5)
2)
• Finely stranded with end sleeve
mm
2
2 x (0.5 ... 1.5)
2)
, 2 x (0.75 ... 2.5)
2)
• Stranded
AWG
2 x (0.5 ... 1.5)
2)
, 2 x (0.75 ... 2.5)
2)
• AWG cables
AWG
2 x (18 ... 14)
• Tightening torque
Nm
0.8 ... 1.2
Connection type
Spring-type terminals
• Solid
mm
2
2 x (0.25 ... 2.5)
• Finely stranded with end sleeve
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)
• Max. external diameter of the conductor insulation
mm
3.6
W
H
D
© Siemens AG 2016