SIEMENS
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Siemens IC 10 · 2017
Coupling Relays
SIRIUS 3RS18 coupling relays with industrial enclosure
5
■
Overview
3RS18 coupling relays in their proven 22.5 mm industrial enclo-
sure serve to couple control signals from and to a controller.
The series comprises devices with up to 3 changeover contacts
with screw terminals or spring-type terminals as combination
voltage or wide voltage range versions.
The relay coils are protected internally with noise suppression
diodes.
Versions:
•
Wide voltage range: One connection for a wide voltage range
•
Combination voltage: Two connections for different voltage
ranges
•
Versions with solid-state compatible outputs
(hard gold-plating)
•
1, 2 or 3 changeover contacts
■
Application
They can be used wherever solid-state-compatible contacts are
required and where devices with a wide voltage range are used.
■
Technical specifications
More information
Technical specifications,
see
Manuals,
Type
3RS1800-.A...
3RS1800-.B...
3RS1800-.H...
General data
Dimensions (W x H x D)
mm
22.5 x 86 x 84
22.5 x 86 x 94
22.5 x 86 x 103
Rated insulation voltage
U
i
(pollution degree 3)
V
500
Protective separation
acc. to IEC 60947-1, Appendix N
between the coil and the contacts and between the individual contacts.
V
300
Permissible
ambient temperature
• During operation
°C
-25 ... +60
• During storage
°C
-40 ... +80
Degree of protection
acc. to IEC 60529
• Enclosure
IP20
Short-circuit protection
Short-circuit test with fuse links of operational class gG,
With short-circuit current
I
k
= 1 kA acc. to IEC 60947-5-1
A
4
Conductor cross-sections
For 3RS1800-1:
Screw terminals
• Solid
mm
2
1 x (0.5 ... 4); 2 x (0.5 ... 2.5)
• Finely stranded with end sleeve
mm
2
2 x (0.5 ... 2.5)
• AWG cables, solid or stranded
mm
2
2 x (20 ... 14)
• Terminal screw
M3.5
-
Corresponding opening tool
Screwdriver, size 3.0 mm x 0.5 mm (3RA2908-1A)
• Tightening torque
Nm
0.8 ... 1.2
For 3RS1800-2:
Spring-type terminals
• Solid
mm
2
2 x (0.25 ... 1.5)
• Finely stranded without end sleeve
mm
2
2 x (0.25 ... 1.5)
• Finely stranded with end sleeve
mm
2
2 x (0.25 ... 1)
• AWG cables, solid or stranded
AWG
2 x (24 ... 16)
• Corresponding opening tool
Screwdriver, size 3.0 mm x 0.5 mm (3RA2908-1A)
W
H
D
© Siemens AG 2016