Article number 3RU1146-4LB0 3RU2146-4LB0
Overload relay 70...90 A For motor protection Size S3, Class 10 Contactor mounting Main circuit: Screw terminal Auxiliary circuit: Screw terminal Manual-Automatic-Reset !!! Phased-out product !!! Successor is SIRIUS 3RU2 Preferred successor type is >>3RU2146-4LB0<< Overload relay 70...90 A Thermal For motor protection Size S3, Class 10 Contactor mounting Main circuit: Screw Auxiliary circuit: Screw Manual-Automatic-Reset
product brand name SIRIUS
product designation thermal overload relay
product type designation 3RU2
General technical data
size of overload relay S3
size of contactor can be combined company-specific S3
power loss [W] for rated value of the current at AC in hot operating state 21 W
● per pole 7 W
insulation voltage with degree of pollution 3 at AC rated value 1 000 V
surge voltage resistance rated value 8 kV
maximum permissible voltage for protective separation in networks with grounded star point
● between auxiliary and auxiliary circuit 440 V
● between auxiliary and auxiliary circuit 440 V
● between main and auxiliary circuit 440 V
● between main and auxiliary circuit 440 V
protection class IP
● on the front IP20
● of the terminal IP00
shock resistance 8g / 10 ms
● according to IEC 60068-2-27 8g / 11 ms
type of protection DMT 98 ATEX G 001
reference code according to IEC 81346-2 F
Substance Prohibitance (Date) 07/01/2006 03/01/2017
SVHC substance name
Lead - 7439-92-1
Ambient conditions
installation altitude at height above sea level maximum 2 000 m
ambient temperature
● during operation -20 ... +70 °C -40 ... +70 °C
● during storage -55 ... +80 °C
● during transport -55 ... +80 °C
temperature compensation -40 ... +60 °C
relative humidity during operation 100 % 10 ... 95 %
Main circuit
number of poles for main current circuit 3
adjustable current response value current of the current-dependent overload release 70 ... 90 A
operating voltage
● rated value 690 V
● at AC-3e rated value maximum 1 000 V
operating frequency rated value 50 ... 60 Hz
operational current rated value 90 A
operational current at AC-3e at 400 V rated value 90 A
operating power at AC-3e
● at 400 V rated value 45 kW
● at 690 V rated value 75 kW
Auxiliary circuit
design of the auxiliary switch integrated
number of NC contacts for auxiliary contacts 1
● note for contactor disconnection
number of NO contacts for auxiliary contacts 1
● note for message "Tripped"
number of CO contacts for auxiliary contacts 0
operational current of auxiliary contacts at AC-15
● at 24 V 3 A
● at 110 V 3 A
● at 120 V 3 A
● at 125 V 3 A
● at 230 V 2 A
● at 400 V 1 A
operational current of auxiliary contacts at DC-13
● at 24 V 1 A 2 A
● at 60 V 0.3 A
● at 110 V 0.22 A 0.2 A
● at 125 V 0.22 A
● at 220 V 0.11 A
design of the miniature circuit breaker for short-circuit protection of the auxiliary switch required 6A (SCC less than equal to 0.5 kA; U less than equal to 260V)
contact rating of auxiliary contacts according to UL B600 / R300
Protective and monitoring functions
trip class CLASS 10
design of the overload release thermal
UL/CSA ratings
full-load current (FLA) for 3-phase AC motor
● at 480 V rated value 77 A
● at 600 V rated value 77 A
Short-circuit protection
design of the fuse link
● for short-circuit protection of the main circuit
— with type of coordination 1 required gG: 250 A
— with type of assignment 2 required gG: 160 A
● for short-circuit protection of the auxiliary switch required fuse gL/gG: 6 A, quick: 10 A fuse gG: 6 A, quick: 10 A
Installation/ mounting/ dimensions
mounting position with vertical mounting surface +/-135° rotatable, with vertical mounting surface +/- 45° tiltable to the front and back any
fastening method Contactor mounting
height 120 mm 105 mm
width 70 mm
depth 140 mm 125 mm
required spacing
● with side-by-side mounting
— forwards 0 mm
— backwards 0 mm
— upwards 0 mm
— downwards 0 mm
— at the side 0 mm
● for grounded parts
— forwards 0 mm
— backwards 0 mm
— upwards 0 mm
— at the side 6 mm
— downwards 0 mm
● for live parts
— forwards 0 mm
— backwards 0 mm
— upwards 0 mm
— downwards 0 mm
— at the side 6 mm
Connections/ Terminals
product component removable terminal for auxiliary and control circuit No
type of electrical connection
● for main current circuit screw-type terminals
● for auxiliary and control circuit screw-type terminals
arrangement of electrical connectors for main current circuit Top and bottom
type of connectable conductor cross-sections for main contacts
● solid 2x (2.5 ... 16 mm²)
● stranded 2x (10 ... 50 mm²), 10 ... 70 mm² 2x (6 ... 16 mm²), 2x (10 ... 50 mm²), 1x (10 ... 70 mm²)
● solid or stranded 2x (2,5 ... 50 mm²), 1x (10 ... 70 mm²)
● finely stranded with core end processing 2x (2.5 ... 35 mm²), 2.5 ... 50 mm² 2x (2.5 ... 35 mm²), 1x (2.5 ... 50 mm²)
type of connectable conductor cross-sections
● for auxiliary contacts
— solid 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
— solid or stranded 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
— finely stranded with core end processing 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
● for AWG cables for auxiliary contacts 2x (20 ... 16), 2x (18 ... 14)
tightening torque
● for main contacts for ring cable lug 4.5 ... 6 N·m
outer diameter of the usable ring cable lug maximum 19 m
tightening torque
● for main contacts with screw-type terminals 4.5 ... 6 N·m
● for auxiliary contacts with screw-type terminals 0.8 ... 1.2 N·m
design of screwdriver shaft Hexagonal socket
size of the screwdriver tip 4 mm hexagon socket
design of the thread of the connection screw
● for main contacts M8
● of the auxiliary and control contacts M3
IEC 61508
T1 value
● for proof test interval or service life according to IEC 61508 20 a
Electrical Safety
touch protection against electrical shock finger-safe
protection class IP on the front according to IEC 60529 IP20
touch protection on the front according to IEC 60529 finger-safe, for vertical contact from the front
Display
display version for switching status Slide switch
Approvals Certificates
General Product Approval
CCC CCC
Yes Yes
Confirmation Yes Yes
EU declaration of conformity EU declaration of conformity Yes Yes
UL UL
Yes Yes
EAC EAC
Yes Yes
For use in hazardous locations
ATEX ATEX Yes Yes
IECEx IECEx
Yes Yes
Test Certificates
Special Test Certificate Yes Yes
Type Test Certificates/Test Report Yes Yes
Marine / Shipping
ABS (American Bureau of Shipping) ABS (American Bureau of Shipping)
Yes Yes
other
Confirmation Yes Yes
Miscellaneous Yes Yes
Railway
Special Test Certificate Yes Yes
Environment
Environmental Confirmations Yes Yes
Further information
Information on the packaging
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Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, EPLAN macros, ...)
Characteristic: Tripping characteristics, I²t, Let-through current
Further characteristics (e.g. electrical endurance, switching frequency)
3RU1146-4LB0 3RU2146-4LB0
3RU1146-4LB0 3RU2146-4LB0
3RU1146-4LB0 3RU2146-4LB0
last modified: 3/22/2024
Date
3/25/2024
Subject to change without notice
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