SIEMENS
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Siemens IC 10 · 2017
Relays
SIRIUS 3RS10, 3RS11, 3RS20, 3RS21 Temperature Monitoring Relays
General data
10
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Overview
SIRIUS 3RS temperature monitoring relay
The 3RS10, 3RS11, 3RS20 and 3RS21 temperature monitoring
relays can be used for measuring temperatures in solid, liquid
and gas media. The temperatures are acquired by means of
sensors in the medium, evaluated by the device and monitored
for overshoot, undershoot or location within a specified range
(window function).
The range comprises adjustable analog units with one or two
threshold values, digital units for 1 sensor, which are also a good
alternative to temperature controllers for the low-end range, and
digital units for up to 3 sensors which have been optimized for
monitoring large motors.
Article No. scheme
Note:
The Article No. scheme shows an overview of product versions
for better understanding of the logic behind the article numbers.
For your orders, please use the article numbers quoted in the
selection and ordering data.
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Benefits
Advantages through energy efficiency
Overview of the energy management process
We offer you a unique portfolio for industrial energy manage-
ment, using an energy management system that helps to opti-
mally define your energy needs. We split up our industrial en-
ergy management into three phases – identify, evaluate, and
realize – and we support you with the appropriate hardware and
software solutions in every process phase.
The innovative SIRIUS industrial controls products can also
make a major contribution to the energy efficiency of a plant
(www.siemens.com/sirius/energysaving)
.
The 3RS10, 3RS11, 3RS20 and 3RS21 temperature monitoring
relays make the following contribution to the energy efficiency of
the plant as a whole:
•
Demand-based control of heating and ventilation in the
process and in the control cabinet
NSB0_01421b
Temperature
setting
LED "Device
on voltage"
LED "Relay
switched"
Hysteresis
switch
LED for display
"Up and Down"
keys
Rotary switch
for parameter
selection
More information
Home page,
see www.siemens.com/relays
Industry Mall,
see www.siemens.com/product?3RS10
Product versions
Article number
Temperature monitoring relays
3RS
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0
Device type
e.g. 10 = analogically adjustable, 1 sensor
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Version and type of sensor
e.g. 00 = one threshold value,
PT100 sensor
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Connection type
Screw terminals
1
Spring-type terminals (push-in)
2
Number and type of outputs
e.g. C = 1 NO + 1 NC
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Control supply voltage
e.g. D = 24 V AC/DC
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Measuring range
e.g. 0 = -50 ... + 50 °C
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Example
3RS
1
0
0
0
–
1
C
D
0
0
IC01_00244
© Siemens AG 2016