Data sheet
3RU2146-4MB0
Overload relay 80...100 A Thermal For motor protection Size S3,
Class 10 Contactor mounting Main circuit: Screw Auxiliary circuit:
Screw Manual-Automatic-Reset
Product brand name
Product designation
Product type designation
SIRIUS
thermal overload relay
3RU2
General technical data
Size of overload relay
Size of contactor can be combined company-specific
Power loss [W] for rated value of the current
● at AC in hot operating state
● at AC in hot operating state per pole
Insulation voltage with degree of pollution 3 rated
value
Surge voltage resistance rated value
maximum permissible voltage for safe isolation
● in networks with grounded star point between
auxiliary and auxiliary circuit
● in networks with grounded star point between
auxiliary and auxiliary circuit
● in networks with grounded star point between
main and auxiliary circuit
440 V
440 V
440 V
21 W
7 W
1 000 V
8 kV
S3
S3
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● in networks with grounded star point between
main and auxiliary circuit
Protection class IP
● on the front
● of the terminal
Shock resistance
● acc. to IEC 60068-2-27
Recovery time
● after overload trip with automatic reset typical
● after overload trip with remote-reset
● after overload trip with manual reset
Type of protection according to ATEX directive
2014/34/EU
Certificate of suitability according to ATEX directive
2014/34/EU
Reference code acc. to DIN EN 81346-2
440 V
IP20
IP00
8g / 11 ms
10 min
10 min
10 min
Ex II (2) GD
DMT 98 ATEX G 001
F
Ambient conditions
Installation altitude at height above sea level
● maximum
Ambient temperature
● during operation
● during storage
● during transport
Temperature compensation
Relative humidity during operation
-40 ... +70 °C
-55 ... +80 °C
-55 ... +80 °C
-40 ... +60 °C
10 ... 95 %
2 000 m
Main circuit
Number of poles for main current circuit
Adjustable pick-up value current of the current-
dependent overload release
Operating voltage
● rated value
● at AC-3 rated value maximum
Operating frequency rated value
Operating current rated value
690 V
690 V
50 ... 60 Hz
100 A
3
80 ... 100 A
Auxiliary circuit
Design of the auxiliary switch
Number of NC contacts for auxiliary contacts
● Note
Number of NO contacts for auxiliary contacts
● Note
Number of CO contacts
● for auxiliary contacts
0
integrated
1
for contactor disconnection
1
for message "Tripped"
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Operating current of auxiliary contacts at AC-15
● at 24 V
● at 110 V
● at 120 V
● at 125 V
● at 230 V
● at 400 V
Operating current of auxiliary contacts at DC-13
● at 24 V
● at 60 V
● at 110 V
● at 125 V
● at 220 V
Design of the miniature circuit breaker
● for short-circuit protection of the auxiliary switch
required
Contact rating of auxiliary contacts according to UL
6A (SCC less than equal to 0.5 kA; U less than equal to 260V)
B600 / R300
2 A
0.3 A
0.22 A
0.22 A
0.11 A
3 A
3 A
3 A
3 A
2 A
1 A
Protective and monitoring functions
Trip class
Design of the overload release
CLASS 10
thermal
UL/CSA ratings
Full-load current (FLA) for three-phase AC motor
● at 480 V rated value
● at 600 V rated value
96 A
99 A
Short-circuit protection
Design of the fuse link
● for short-circuit protection of the main circuit
— with type of coordination 1 required
— with type of assignment 2 required
● for short-circuit protection of the auxiliary switch
required
gG: 250 A
gG: 200 A
fuse gG: 6 A, quick: 10 A
Installation/ mounting/ dimensions
Mounting position
Mounting type
Height
Width
Depth
Required spacing
● with side-by-side mounting
— forwards
— Backwards
0 mm
0 mm
any
Contactor mounting
105 mm
70 mm
125 mm
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— upwards
— downwards
— at the side
● for grounded parts
— forwards
— Backwards
— upwards
— at the side
— downwards
● for live parts
— forwards
— Backwards
— upwards
— downwards
— at the side
0 mm
0 mm
0 mm
0 mm
0 mm
0 mm
6 mm
0 mm
0 mm
0 mm
0 mm
0 mm
6 mm
Connections/ Terminals
Product function
● removable terminal for auxiliary and control
circuit
Type of electrical connection
● for main current circuit
● for auxiliary and control current circuit
Arrangement of electrical connectors for main current
circuit
Type of connectable conductor cross-sections
● for main contacts
— solid
— stranded
— single or multi-stranded
— finely stranded with core end processing
● at AWG conductors for main contacts
Type of connectable conductor cross-sections
● for auxiliary contacts
— single or multi-stranded
— finely stranded with core end processing
● at AWG conductors for auxiliary contacts
Tightening torque
● for main contacts for ring cable lug
Outer diameter of the usable ring cable lug maximum
Tightening torque
● for main contacts with screw-type terminals
4.5 ... 6 N·m
4.5 ... 6 N·m
19 mm
2x (0,5 ... 1,5 mm²), 2x (0,75 ... 2,5 mm²)
2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
2x (20 ... 16), 2x (18 ... 14)
2x (2.5 ... 16 mm²)
2x (6 ... 16 mm²), 2x (10 ... 50 mm²), 1x (10 ... 70 mm²)
2x (2,5 ... 50 mm²), 1x (10 ... 70 mm²)
2x (2.5 ... 35 mm²), 1x (2.5 ... 50 mm²)
2x (10 ... 1/0), 1x (10 ... 2/0)
screw-type terminals
screw-type terminals
Top and bottom
No
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● for auxiliary contacts with screw-type terminals
Design of screwdriver shaft
Size of the screwdriver tip
Design of the thread of the connection screw
● for main contacts
● of the auxiliary and control contacts
0.8 ... 1.2 N·m
Hexagonal socket
4 mm hexagon socket
M8
M3
Safety related data
T1 value for proof test interval or service life acc. to
IEC 61508
20 y
Display
Display version
● for switching status
Slide switch
Certificates/ approvals
General Product Approval
For use in hazardous locations
Declaration of Conformity
Miscellaneous
Test Certificates
Type Test Certific-
ates/Test Report
Special Test Certi-
ficate
Marine / Shipping
Marine / Shipping
other
Confirmation
Railway
Special Test Certi-
ficate
Further information
Information- and Downloadcenter (Catalogs, Brochures,…)
www.siemens.com/sirius/catalogs
Industry Mall (Online ordering system)
https://mall.industry.siemens.com/mall/en/en/Catalog/product?mlfb=3RU2146-4MB0
Cax online generator
http://support.automation.siemens.com/WW/CAXorder/default.aspx?lang=en&mlfb=3RU2146-4MB0
Service&Support (Manuals, Certificates, Characteristics, FAQs,...)
https://support.industry.siemens.com/cs/ww/en/ps/3RU2146-4MB0
Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, EPLAN macros, ...)
http://www.automation.siemens.com/bilddb/cax_de.aspx?mlfb=3RU2146-4MB0&lang=en
Characteristic: Tripping characteristics, I²t, Let-through current
https://support.industry.siemens.com/cs/ww/en/ps/3RU2146-4MB0/char
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