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 3 rated value690 V
for monitoringAC/DC
of the control supply voltageAC/DC
surge voltage resistance rated value4 kV
between auxiliary and auxiliary circuit300 V
between control and auxiliary circuit300 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) typical10.000.000
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 CAS-Yok. 7439-92-1 2-methyl-1-(4-methylthiophenyl)-2-morpholinopropan-1-one CAS-Yok. 71868-10-5 Melamine CAS-Yok. 108-78-1 6,6'-di-tert-butyl-2,2'-methylenedi-p-cresol CAS-Yok. 119-47-1
Net Weight126,477 g
Product Function
undervoltage detectionVar
overvoltage detectionVar
phase sequence recognitionYok
phase failure detectionYok
asymmetry detectionYok
voltage monitoringVar
current monitoringYok
overvoltage detection 1 phaseVar
overvoltage detection 3 phaseYok
overvoltage detection DCVar
undervoltage detection 1 phaseVar
undervoltage detection 3 phasesYok
undervoltage detection DCVar
voltage window recognition 1 phaseVar
voltage window recognition 3 phaseYok
voltage window recognition DCVar
adjustable open/closed-circuit current principleVar
external resetVar
auto-RESETVar
measurable line frequency initial value40 Hz
measurable line frequency full-scale value500 Hz
Control circuit/ Control
at 50 Hz rated value24... 240 V
at 60 Hz rated value24... 240 V
control supply voltage at DC rated value24... 240 V
initial value0,85
full-scale value1,1
initial value0,85
full-scale value1,1
initial value0,85
full-scale value1,1
starting time after the control supply voltage has been applied1.000 ms
Measuring circuit
measurable line frequency40... 500 Hz
measurable voltage at AC0... 60 V
measurable voltage at DC0,1... 60 V
when starting20 s
with lower or upper limit violation0,1... 20 s
response time maximum450 ms
accuracy of digital display+/-1 digit
relative temperature-related measurement deviation0,1 %
Precision
relative metering precision5 %
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
at 24 V1 A
at 125 V0,2 A
at 250 V0,1 A
operational current at 17 V minimum5 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 outputVar
between the outputsVar
between the voltage supply and other circuitsVar
Safety related data
product function suitable for safety functionYok
Electrical Safety
protection class IP on the front according to IEC 60529IP20
Connections/ Terminals
product component removable terminal for auxiliary and control circuitVar
type of electrical connectionspring-loaded terminals
solid2x (0,25... 1,5 mm²)
finely stranded with core end processing2 x (0,25... 1,5 mm²)
finely stranded without core end processing2x (0,25... 1,5 mm²)
for AWG cables solid2x (24... 16)
for AWG cables stranded2x (24... 16)
solid0,25... 1,5 mm²
finely stranded with core end processing0,25... 1,5 mm²
finely stranded without core end processing0,25... 1,5 mm²
solid24... 16
stranded24... 16
Installation/ mounting/ dimensions
mounting positionany
fastening methodsnap-on mounting
height94 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 storage-40... +85 °C
during transport-40... +85 °C
Approvals Certificates
global warming potential [CO2 eq] / during manufacturing4,44 kg
global warming potential [CO2 eq] / during sales0,0341 kg
global warming potential [CO2 eq] / during operation13,7 kg
global warming potential [CO2 eq] / after end of life-1.06 kg
global warming potential [CO2 eq] / total17,1 kg