product brand nameSIRIUS
product designationVoltage monitoring relay with digital setting
product type designation3UG4
General technical data
product functionVoltage monitoring relay
design of the displayLCD
consumed active power2 W
with degree of pollution 2 rated value690 V
degree of pollution2
for monitoringAC/DC
of the control supply voltageDC
surge voltage resistance rated value6 kV
between control and auxiliary circuit690 V
shock resistance according to IEC 60068-2-27sinusoidal half-wave 15 g / 11 ms
vibration resistance according to IEC 60068-2-61 ... 6 Hz: 15 mm, 6 ... 500 Hz: 2 g
mechanical service life (operating cycles) typical10 000 001
electrical endurance (operating cycles) at AC-15 at 230 V typical100 000
thermal current of the switching element with contacts maximum5 A
reference code according to IEC 81346-2K
relative repeat accuracy1 %
Substance Prohibitance (day/month/year)05/01/2012
SVHC substance nameLead monoxide (lead oxide) CAS-No. 1317-36-8 2-methyl-1-(4-methylthiophenyl)-2-morpholinopropan-1-one CAS-No. 71868-10-5 Melamine CAS-No. 108-78-1 6,6'-di-tert-butyl-2,2'-methylenedi-p-cresol CAS-No. 119-47-1
Net Weight0.132 kg
Product Function
undervoltage detectionYes
overvoltage detectionYes
phase sequence recognitionNo
phase failure detectionNo
asymmetry detectionNo
voltage monitoringYes
current monitoringNo
overvoltage detection 1 phaseYes
overvoltage detection 3 phaseNo
overvoltage detection DCYes
undervoltage detection 1 phaseYes
undervoltage detection 3 phasesNo
undervoltage detection DCYes
voltage window recognition 1 phaseYes
voltage window recognition 3 phaseNo
voltage window recognition DCYes
adjustable open/closed-circuit current principleYes
external resetYes
auto-RESETYes
measurable line frequency initial value500 Hz
measurable line frequency full-scale value40 Hz
Control circuit/ Control
control supply voltage at DC rated value24 V
initial value0.75
full-scale value1.25
starting time after the control supply voltage has been applied1 000 ms
Measuring circuit
measurable line frequency500 ... 40 Hz
measurable voltage at AC10 ... 600 V
measurable voltage at DC10 ... 600 V
when starting0 ... 999.9 s
with lower or upper limit violation0 ... 999.9 s
response time maximum450 ms
accuracy of digital display+/-1 digit
relative temperature-related measurement deviation0.1 %
Precision
relative metering precision5 %
Communication/ Protocol
protocol is supported IO-Link protocolYes
IO-Link transfer rateCOM2 (38,4 kBaud)
point-to-point cycle time between master and IO-Link device minimum10 ms
type of voltage supply via input/output link masterYes
of the address range of the inputs with cyclical transfer total4 byte
of the address range of the outputs with cyclical transfer total2 byte
Auxiliary circuit
number of NC contacts delayed switching0
number of NO contacts delayed switching0
number of CO contacts delayed switching1
operating frequency with 3RT2 contactor maximum5 000 1/h
Main circuit
number of poles for main current circuit1
at AC at 60 Hz rated value240 V
at DC rated value24 V
ampacity of the output relay at AC-15 at 400 V at 50/60 Hz3 A
ampacity of the semiconductor output in SIO mode200 mA
operational current at 17 V minimum10 mA
continuous current of the DIAZED fuse link of the output relay4 A
Electromagnetic compatibility
due to burst according to IEC 61000-4-42 kV
due to conductor-earth surge according to IEC 61000-4-52 kV
due to conductor-conductor surge according to IEC 61000-4-51 kV
field-based interference according to IEC 61000-4-310 V/m
electrostatic discharge according to IEC 61000-4-26 kV contact discharge / 8 kV air discharge
Galvanic isolation
design of the electrical isolationProtective separation
between input and outputYes
between the voltage supply and other circuitsYes
Safety related data
product function suitable for safety functionNo
Electrical Safety
protection class IP on the front according to IEC 60529IP20
Connections/ Terminals
product component removable terminal for auxiliary and control circuitYes
type of electrical connectionscrew terminal
solid1x (0.5 ... 4 mm²), 2x (0.5 ... 2.5 mm²)
finely stranded with core end processing1x (0.5 ... 2.5 mm²), 2x (0.5 ... 1.5 mm²)
for AWG cables solid2x (20 ... 14)
for AWG cables stranded2x (20 ... 14)
solid0.5 ... 4 mm²
finely stranded with core end processing0.5 ... 2.5 mm²
solid20 ... 14
stranded20 ... 14
tightening torque with screw-type terminals1.2 ... 0.8 N·m
Installation/ mounting/ dimensions
mounting positionany
fastening methodsnap-on mounting
height92 mm
width22.5 mm
depth91 mm
— forwards0 mm
— backwards0 mm
— upwards0 mm
— downwards0 mm
— at the side0 mm
— forwards0 mm
— backwards0 mm
— upwards0 mm
— at the side0 mm
— downwards0 mm
— forwards0 mm
— backwards0 mm
— upwards0 mm
— at the side0 mm
Ambient conditions
installation altitude at height above sea level maximum2 000 m
during operation-25 ... +60 °C
during storage85 ... -40 °C
during transport85 ... -40 °C