Data sheet
3RT2023-1KB40
power contactor, AC-3 9 A, 4 kW / 400 V 1 NO + 1 NC, 24 V DC with
integrated varistor 3-pole, size S0 screw terminal suitable for PLC outputs
not expandable with auxiliary switch
product brand name
SIRIUS
product designation
Coupling relay
product type designation
3RT2
General technical data
size of contactor
S0
product extension
● function module for communication
No
● auxiliary switch
No
power loss [W] for rated value of the current at AC in hot
operating state
● per pole
power loss [W] for rated value of the current without
load current share typical
1.2 W
0.4 W
4.5 W
surge voltage resistance
● of main circuit rated value
6 kV
● of auxiliary circuit rated value
6 kV
maximum permissible voltage for safe isolation between
coil and main contacts acc. to EN 60947-1
400 V
shock resistance at rectangular impulse
● at DC
10g / 5 ms, 7,5g / 10 ms
shock resistance with sine pulse
● at DC
15g / 5 ms, 10g / 10 ms
mechanical service life (switching cycles)
● of contactor typical
10 000 000
● of the contactor with added electronically optimized
auxiliary switch block typical
5 000 000
● of the contactor with added auxiliary switch block
typical
10 000 000
reference code acc. to IEC 81346-2
Q
Substance Prohibitance (Date)
01.10.2009 00:00:00
Ambient conditions
installation altitude at height above sea level maximum
2 000 m
● ambient temperature during operation
-25 ... +60 °C
● ambient temperature during storage
-55 ... +80 °C
Main circuit
number of poles for main current circuit
3
number of NO contacts for main contacts
3
● operating voltage at AC-3 rated value maximum
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690 V
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© Copyright Siemens
operational current
● at AC-1 at 400 V at ambient temperature 40 °C
rated value
40 A
● at AC-1
— up to 690 V at ambient temperature 40 °C
rated value
40 A
— up to 690 V at ambient temperature 60 °C
rated value
35 A
● at AC-3
— at 400 V rated value
9A
— at 500 V rated value
9A
— at 690 V rated value
9A
● at AC-4 at 400 V rated value
8.5 A
● at AC-5a up to 690 V rated value
35.2 A
● at AC-5b up to 400 V rated value
7.4 A
● at AC-6a
— up to 230 V for current peak value n=20 rated
value
11.4 A
— up to 400 V for current peak value n=20 rated
value
11.4 A
— up to 500 V for current peak value n=20 rated
value
9.1 A
— up to 690 V for current peak value n=20 rated
value
9A
● at AC-6a
— up to 230 V for current peak value n=30 rated
value
7.6 A
— up to 400 V for current peak value n=30 rated
value
7.6 A
— up to 500 V for current peak value n=30 rated
value
6.1 A
— up to 690 V for current peak value n=30 rated
value
6.1 A
minimum cross-section in main circuit at maximum AC-1
rated value
10 mm²
operational current for approx. 200000 operating
cycles at AC-4
● at 400 V rated value
4.1 A
● at 690 V rated value
3.3 A
operational current
● at 1 current path at DC-1
— at 24 V rated value
35 A
— at 110 V rated value
4.5 A
— at 220 V rated value
1A
— at 440 V rated value
0.4 A
— at 600 V rated value
0.25 A
● with 2 current paths in series at DC-1
— at 24 V rated value
35 A
— at 110 V rated value
35 A
— at 220 V rated value
5A
— at 440 V rated value
1A
— at 600 V rated value
0.8 A
● with 3 current paths in series at DC-1
— at 24 V rated value
35 A
— at 110 V rated value
35 A
— at 220 V rated value
35 A
— at 440 V rated value
2.9 A
— at 600 V rated value
1.4 A
operational current
● at 1 current path at DC-3 at DC-5
— at 24 V rated value
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20 A
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© Copyright Siemens
— at 110 V rated value
2.5 A
— at 220 V rated value
1A
— at 440 V rated value
0.09 A
— at 600 V rated value
0.06 A
● with 2 current paths in series at DC-3 at DC-5
— at 24 V rated value
35 A
— at 110 V rated value
15 A
— at 220 V rated value
3A
— at 440 V rated value
0.27 A
— at 600 V rated value
0.16 A
● with 3 current paths in series at DC-3 at DC-5
— at 24 V rated value
35 A
— at 110 V rated value
35 A
— at 220 V rated value
10 A
— at 440 V rated value
0.6 A
— at 600 V rated value
0.6 A
operating power
● at AC-2 at 400 V rated value
4 kW
● at AC-3
— at 230 V rated value
2.2 kW
— at 400 V rated value
4 kW
— at 500 V rated value
4 kW
— at 690 V rated value
7.5 kW
operating power for approx. 200000 operating cycles
at AC-4
● at 400 V rated value
2 kW
● at 690 V rated value
2.5 kW
operating apparent power at AC-6a
● up to 230 V for current peak value n=20 rated value
4.5 kV·A
● up to 400 V for current peak value n=20 rated value
7.8 kV·A
● up to 500 V for current peak value n=20 rated value
7.8 kV·A
● up to 690 V for current peak value n=20 rated value
10.7 kV·A
operating apparent power at AC-6a
● up to 230 V for current peak value n=30 rated value
3 kV·A
● up to 400 V for current peak value n=30 rated value
5.2 kV·A
● up to 500 V for current peak value n=30 rated value
5.2 kV·A
● up to 690 V for current peak value n=30 rated value
7.2 kV·A
short-time withstand current in cold operating state
up to 40 °C
● limited to 1 s switching at zero current maximum
170 A; Use minimum cross-section acc. to AC-1 rated value
● limited to 5 s switching at zero current maximum
170 A; Use minimum cross-section acc. to AC-1 rated value
● limited to 10 s switching at zero current maximum
122 A; Use minimum cross-section acc. to AC-1 rated value
● limited to 30 s switching at zero current maximum
78 A; Use minimum cross-section acc. to AC-1 rated value
● limited to 60 s switching at zero current maximum
68 A; Use minimum cross-section acc. to AC-1 rated value
no-load switching frequency
● at DC
1 500 1/h
operating frequency
● at AC-1 maximum
1 000 1/h
● at AC-2 maximum
1 000 1/h
● at AC-3 maximum
1 000 1/h
● at AC-4 maximum
300 1/h
Control circuit/ Control
type of voltage of the control supply voltage
DC
control supply voltage at DC
● rated value
24 V
operating range factor control supply voltage rated
value of magnet coil at DC
● initial value
0.7
● full-scale value
1.25
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design of the surge suppressor
with varistor
closing power of magnet coil at DC
4.5 W
holding power of magnet coil at DC
4.5 W
closing delay
● at DC
50 ... 170 ms
opening delay
● at DC
15 ... 17.5 ms
arcing time
10 ... 10 ms
control version of the switch operating mechanism
Standard A1 - A2
Auxiliary circuit
number of NC contacts for auxiliary contacts
instantaneous contact
1
number of NO contacts for auxiliary contacts
instantaneous contact
1
operational current at AC-12 maximum
10 A
operational current at AC-15
● at 230 V rated value
10 A
● at 400 V rated value
3A
● at 500 V rated value
2A
● at 690 V rated value
1A
operational current at DC-12
● at 24 V rated value
10 A
● at 48 V rated value
6A
● at 60 V rated value
6A
● at 110 V rated value
3A
● at 125 V rated value
2A
● at 220 V rated value
1A
● at 600 V rated value
0.15 A
operational current at DC-13
● at 24 V rated value
10 A
● at 48 V rated value
2A
● at 60 V rated value
2A
● at 110 V rated value
1A
● at 125 V rated value
0.9 A
● at 220 V rated value
0.3 A
● at 600 V rated value
0.1 A
contact reliability of auxiliary contacts
1 faulty switching per 100 million (17 V, 1 mA)
UL/CSA ratings
full-load current (FLA) for 3-phase AC motor
● at 480 V rated value
7.6 A
● at 600 V rated value
9A
yielded mechanical performance [hp]
● for single-phase AC motor
— at 110/120 V rated value
1 hp
— at 230 V rated value
1 hp
● for 3-phase AC motor
— at 200/208 V rated value
2 hp
— at 220/230 V rated value
3 hp
— at 460/480 V rated value
5 hp
— at 575/600 V rated value
7.5 hp
contact rating of auxiliary contacts according to UL
A600 / P600
Short-circuit protection
design of the fuse link
● for short-circuit protection of the main circuit
— with type of coordination 1 required
gG: 63A (690V,100kA), aM: 32A (690V,100kA), BS88: 63A (415V,80kA)
— with type of assignment 2 required
gG: 25A (690V,100kA), aM: 20A (690V,100kA), BS88: 25A (415V,80kA)
● for short-circuit protection of the auxiliary switch
required
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gG: 10 A (500 V, 1 kA)
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Subject to change without notice
© Copyright Siemens
Installation/ mounting/ dimensions
mounting position
+/-180° rotation possible on vertical mounting surface; can be tilted
forward and backward by +/- 22.5° on vertical mounting surface
fastening method
screw and snap-on mounting onto 35 mm standard mounting rail
according to DIN EN 60715
● side-by-side mounting
Yes
height
85 mm
width
45 mm
depth
107 mm
required spacing
● with side-by-side mounting
— forwards
10 mm
— upwards
10 mm
— downwards
10 mm
— at the side
0 mm
● for grounded parts
— forwards
10 mm
— upwards
10 mm
— at the side
6 mm
— downwards
10 mm
● for live parts
— forwards
10 mm
— upwards
10 mm
— downwards
10 mm
— at the side
6 mm
Connections/ Terminals
type of electrical connection
● for main current circuit
screw-type terminals
● for auxiliary and control circuit
screw-type terminals
● at contactor for auxiliary contacts
Screw-type terminals
● of magnet coil
Screw-type terminals
type of connectable conductor cross-sections
● for main contacts
— solid
2x (1 ... 2.5 mm²), 2x (2.5 ... 10 mm²)
— solid or stranded
2x (1 ... 2,5 mm²), 2x (2,5 ... 10 mm²)
— finely stranded with core end processing
2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²), 1x 10 mm²
● at AWG cables for main contacts
2x (16 ... 12), 2x (14 ... 8)
connectable conductor cross-section for main
contacts
● solid
1 ... 10 mm²
● stranded
1 ... 10 mm²
● finely stranded with core end processing
1 ... 10 mm²
connectable conductor cross-section for auxiliary
contacts
● solid or stranded
0.5 ... 2.5 mm²
● finely stranded with core end processing
0.5 ... 2.5 mm²
type of connectable conductor cross-sections
● for auxiliary contacts
— 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)
● at AWG cables for auxiliary contacts
2x (20 ... 16), 2x (18 ... 14)
● AWG number as coded connectable conductor
cross section for main contacts
16 ... 8
● AWG number as coded connectable conductor
cross section for auxiliary contacts
20 ... 14
Safety related data
B10 value with high demand rate acc. to SN 31920
1 000 000
proportion of dangerous failures
● with low demand rate acc. to SN 31920
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40 %
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© Copyright Siemens
● with high demand rate acc. to SN 31920
73 %
failure rate [FIT] with low demand rate acc. to SN 31920
100 FIT
product function
● mirror contact acc. to IEC 60947-4-1
Yes
T1 value for proof test interval or service life acc. to
IEC 61508
20 y
protection class IP on the front acc. to IEC 60529
IP20
touch protection on the front acc. to IEC 60529
finger-safe, for vertical contact from the front
suitability for use safety-related switching OFF
Yes
Certificates/ approvals
General Product Approval
EMC
KC
Declaration of Conformity
Miscellaneous
Test Certificates
Special Test
Certificate
Marine / Shipping
Type Test
Certificates/Test
Report
Marine / Shipping
other
Confirmation
Further information
Information- and Downloadcenter (Catalogs, Brochures,…)
https://www.siemens.com/ic10
Industry Mall (Online ordering system)
https://mall.industry.siemens.com/mall/en/en/Catalog/product?mlfb=3RT2023-1KB40
Cax online generator
http://support.automation.siemens.com/WW/CAXorder/default.aspx?lang=en&mlfb=3RT2023-1KB40
Service&Support (Manuals, Certificates, Characteristics, FAQs,...)
https://support.industry.siemens.com/cs/ww/en/ps/3RT2023-1KB40
Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, EPLAN macros, ...)
http://www.automation.siemens.com/bilddb/cax_de.aspx?mlfb=3RT2023-1KB40&lang=en
Characteristic: Tripping characteristics, I²t, Let-through current
https://support.industry.siemens.com/cs/ww/en/ps/3RT2023-1KB40/char
Further characteristics (e.g. electrical endurance, switching frequency)
http://www.automation.siemens.com/bilddb/index.aspx?view=Search&mlfb=3RT2023-1KB40&objecttype=14&gridview=view1
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last modified:
1/18/2021
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