product brand nameSIRIUS
product designationthermal overload relay
product type designation3RU2
General technical data
size of overload relayS00
size of contactor can be combined company-specificS00
power loss [W] for rated value of the current at AC in hot operating state5.7 W
per pole1.9 W
type of calculation of power loss current-dependentquadratic
insulation voltage with degree of pollution 3 at AC rated value690 V
surge voltage resistance rated value6 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
reference code according to IEC 81346-2F
Substance Prohibitance (day/month/year)10/01/2009
Net Weight0.154 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 release2.8 ... 4 A
rated value690 V
at AC-3e rated value maximum690 V
operating frequency rated value50 ... 60 Hz
operational current rated value4 A
operational current at AC-3e at 400 V rated value4 A
— at 400 V rated value1.5 kW
— at 500 V rated value2.2 kW
— at 690 V rated value3 kW
— at 400 V rated value1.5 kW
— at 500 V rated value2.2 kW
— at 690 V rated value3 kW
Auxiliary circuit
design of the auxiliary switchintegrated
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
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 value4 A
at 600 V rated value4 A
Short-circuit protection
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 vertical mounting plane +/-135° rotatable & +/- 22.5° tiltable, stand-alone installation: with a vertical mounting plane +/-135° rotatable and +/-45° tiltable; for more details see manual
fastening methodContactor mounting
height87 mm
width45 mm
depth70 mm
Connections/ Terminals
product component removable terminal for auxiliary and control circuitNo
for main current circuitspring-loaded terminals
for auxiliary and control circuitspring-loaded terminals
arrangement of electrical connectors for main current circuitTop and bottom
— solid or stranded1x (0,5 ... 4 mm²)
— finely stranded with core end processing1x (0.5 ... 2.5 mm²)
— finely stranded without core end processing1x (0.5 ... 2.5 mm²)
for AWG cables for main contacts1x (20 ... 12)
— solid or stranded2x (0.5 ... 2.5 mm²)
— finely stranded with core end processing2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
— finely stranded without core end processing2x (0.5 ... 1.5 mm²)
for AWG cables for auxiliary contacts2x (20 ... 14)
design of screwdriver shaftDiameter 3 mm
size of the screwdriver tip3,0 x 0,5 mm
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 vertical contact from the front
Display
display version for switching statusSlide switch