product brand nameSIRIUS
product designationthermal overload relay
product type designation3RU2
General technical data
size of overload relayS3
size of contactor can be combined company-specificS3
power loss [W] for rated value of the current at AC in hot operating state21 W
per pole7 W
type of calculation of power loss current-dependentquadratic
insulation voltage with degree of pollution 3 at AC rated value1.000 V
surge voltage resistance rated value8 kV
in networks with ungrounded star point between auxiliary and auxiliary circuit440 V
in networks with grounded star point between auxiliary and auxiliary circuit440 V
in networks with ungrounded star point between main and auxiliary circuit440 V
in networks with grounded star point between main and auxiliary circuit440 V
shock resistance according to IEC 60068-2-278g / 11 ms
with automatic reset typical10 min
with remote-reset10 min
with manual reset10 min
reference code according to IEC 81346-2F
Substance Prohibitance (day/month/year)03/01/2017
Net Weight0,554 kg
Ambient conditions
installation altitude at height above sea level maximum2.000 m
during operation-40... +70 °C
during storage-55... +80 °C
during transport-55... +80 °C
temperature compensation-40... +60 °C
relative humidity during operation10... 95 %
Main circuit
number of poles for main current circuit3
adjustable current response value current of the current-dependent overload release80... 100 A
rated value1.000 V
at AC-3e rated value maximum1.000 V
operating frequency rated value50... 60 Hz
operational current rated value100 A
operational current at AC-3e at 400 V rated value100 A
— at 400 V rated value45 kW
— at 500 V rated value55 kW
— at 690 V rated value90 kW
— at 400 V rated value45 kW
— at 500 V rated value55 kW
— at 690 V rated value90 kW
Auxiliary circuit
design of the auxiliary switchdahili
number of NC contacts for auxiliary contacts1
notefor contactor disconnection
number of NO contacts for auxiliary contacts1
notefor message "Tripped"
number of CO contacts for auxiliary contacts0
at 24 V3 A
at 110 V3 A
at 120 V3 A
at 125 V3 A
at 230 V2 A
at 400 V1 A
at 690 V0,75 A
at 24 V2 A
at 60 V0,3 A
at 110 V0,22 A
at 125 V0,22 A
at 220 V0,11 A
design of the miniature circuit breaker for short-circuit protection of the auxiliary switch required6A (SCC less than equal to 0,5 kA; U less than equal to 260V)
contact rating of auxiliary contacts according to ULB600 / R300
Protective and monitoring functions
trip classCLASS 10
design of the overload releasethermal
UL/CSA ratings
at 480 V rated value96 A
at 600 V rated value99 A
Short-circuit protection
— with type of coordination 1 required690 V: gG: 250 A; 1000 V: a.M. / g.B.: 200 A
— with type of coordination 2 required690 V: gG: 200 A; 1000 V: a.M. / g.B.: 200 A
for short-circuit protection of the auxiliary switch requiredfuse gG: 6 A, quick: 10 A
Installation/ mounting/ dimensions
mounting positionfor mounting on contactors: with a dikey mounting plane +/-135° rotatable & +/- 22,5° tiltable, stand-alone installation: with a dikey mounting plane +/-135° rotatable ve +/-45° tiltable; for more details see manual
fastening methodContactor mounting
height105 mm
width70 mm
depth125 mm
Connections/ Terminals
product component removable terminal for auxiliary and control circuitYok
for main current circuitscrew-type terminals
for auxiliary and control circuitspring-loaded terminals
arrangement of electrical connectors for main current circuitTop ve bottom
— solid2x (2,5... 16 mm²)
— stranded2x (6... 16 mm²), 2x (10... 50 mm²), 1x (10... 70 mm²)
— solid or stranded2x (2,5... 50 mm²), 1x (10... 70 mm²)
— finely stranded with core end processing2x (2,5... 35 mm²), 1x (2,5... 50 mm²)
for AWG cables for main contacts2x (10... 1/0), 1x (10... 2/0)
— solid or stranded2x (0,5... 2,5 mm²)
— finely stranded with core end processing2x (0,5... 1,5 mm²)
— finely stranded without core end processing2x (0,5... 2,5 mm²)
for AWG cables for auxiliary contacts2x (20... 14)
for main contacts for ring cable lug4,5... 6 N·m
outer diameter of the usable ring cable lug maximum19 m
for main contacts with screw-type terminals4,5... 6 N·m
design of screwdriver shaftHexagonal socket
size of the screwdriver tip4 mm hexagon socket
for main contactsM8
Safety related data
failure rate [FIT] with low demand rate according to SN 3192050 FIT
MTTF with high demand rate2.280 a
IEC 61508
for proof test interval or service life according to IEC 6150820 a
Electrical Safety
protection class IP on the front according to IEC 60529IP20
touch protection on the front according to IEC 60529finger-safe, for dikey contact from the front
Display
display version for switching statusSlide switch
Approvals Certificates
global warming potential [CO2 eq] / during manufacturing3,11 kg
global warming potential [CO2 eq] / during sales0,123 kg
global warming potential [CO2 eq] / during operation164 kg
global warming potential [CO2 eq] / after end of life-0.256 kg
global warming potential [CO2 eq] / total167 kg