Data sheet
3RT2018-2XB42-0LA2
Traction contactor, AC-3 16 A, 7.5 kW / 400 V 1 NC, 24-34 V DC, 0.71.25*Us with integrated varistor Size S00, Spring-type terminals suitable for
PLC outputs
product brand name
SIRIUS
product designation
Contactor
design of the product
With extended operating range
product type designation
3RT2
General technical data
size of contactor
S00
product extension
● function module for communication
No
● auxiliary switch
Yes
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
6.6 W
2.2 W
0.7 W
insulation voltage
● of main circuit with degree of pollution 3 rated value
690 V
● of auxiliary circuit with degree of pollution 3 rated
value
690 V
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
6,7g / 5 ms, 4,2g / 10 ms
shock resistance with sine pulse
● at DC
10,5g / 5 ms, 6,6g / 10 ms
mechanical service life (switching cycles)
● of contactor typical
30 000 000
● 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
Ambient conditions
installation altitude at height above sea level maximum
2 000 m
● ambient temperature during operation
-40 ... +70 °C
● ambient temperature during storage
-55 ... +80 °C
Main circuit
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number of poles for main current circuit
3
number of NO contacts for main contacts
3
number of NC contacts for main contacts
0
● operating voltage at AC-3 rated value maximum
690 V
operational current
● at AC-1 at 400 V at ambient temperature 40 °C
rated value
22 A
● at AC-1
— up to 690 V at ambient temperature 40 °C
rated value
22 A
— up to 690 V at ambient temperature 60 °C
rated value
20 A
● at AC-2 at 400 V rated value
16 A
● at AC-3
— at 400 V rated value
16 A
— at 500 V rated value
12.4 A
— at 690 V rated value
8.9 A
● at AC-4 at 400 V rated value
11.5 A
minimum cross-section in main circuit
● at maximum AC-1 rated value
4 mm²
● at maximum Ith rated value
4 mm²
operational current for approx. 200000 operating
cycles at AC-4
● at 400 V rated value
5.5 A
● at 690 V rated value
4.4 A
operational current
● at 1 current path at DC-1
— at 24 V rated value
20 A
— at 110 V rated value
2.1 A
— at 220 V rated value
0.8 A
— at 440 V rated value
0.6 A
— at 600 V rated value
0.6 A
● with 2 current paths in series at DC-1
— at 24 V rated value
20 A
— at 110 V rated value
12 A
— at 220 V rated value
1.6 A
— at 440 V rated value
0.8 A
— at 600 V rated value
0.7 A
● with 3 current paths in series at DC-1
— at 24 V rated value
20 A
— at 110 V rated value
20 A
— at 220 V rated value
20 A
— at 440 V rated value
1.3 A
— at 600 V rated value
1A
operational current
● at 1 current path at DC-3 at DC-5
— at 24 V rated value
20 A
— at 110 V rated value
0.1 A
● with 2 current paths in series at DC-3 at DC-5
— at 24 V rated value
20 A
— at 110 V rated value
0.35 A
● with 3 current paths in series at DC-3 at DC-5
— at 24 V rated value
20 A
— at 110 V rated value
20 A
— at 220 V rated value
1.5 A
— at 440 V rated value
0.2 A
— at 600 V rated value
0.2 A
operating power
● at AC-2 at 400 V rated value
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● at AC-3
— at 230 V rated value
4 kW
— at 400 V rated value
7.5 kW
— at 690 V rated value
7.5 kW
operating power for approx. 200000 operating cycles
at AC-4
● at 400 V rated value
2.5 kW
● at 690 V rated value
3.5 kW
short-time withstand current in cold operating state
up to 40 °C
● limited to 1 s switching at zero current maximum
300 A; Use minimum cross-section acc. to AC-1 rated value
● limited to 5 s switching at zero current maximum
169 A; Use minimum cross-section acc. to AC-1 rated value
● limited to 10 s switching at zero current maximum
128 A; Use minimum cross-section acc. to AC-1 rated value
● limited to 30 s switching at zero current maximum
92 A; Use minimum cross-section acc. to AC-1 rated value
● limited to 60 s switching at zero current maximum
74 A; Use minimum cross-section acc. to AC-1 rated value
no-load switching frequency
● at DC
1 500 1/h
Ratings for railway applications
thermal current (Ith) up to 690 V
● up to 40 °C according to IEC 60077 rated value
22 A
● up to 70 °C according to IEC 60077 rated value
18 A
Control circuit/ Control
type of voltage
DC
type of voltage of the control supply voltage
DC
control supply voltage at DC
● rated value
24 ... 34 V
operating range factor control supply voltage rated
value of magnet coil at DC
● initial value
0.7
● full-scale value
1.25
design of the surge suppressor
with varistor
inrush current peak
2.3 A
duration of inrush current peak
50 µs
locked-rotor current mean value
0.18 A
locked-rotor current peak
0.18 A
duration of locked-rotor current
250 ms
holding current mean value
40 mA
closing power of magnet coil at DC
4W
holding power of magnet coil at DC
0.95 W
closing delay
● at DC
30 ... 70 ms
opening delay
● at DC
25 ... 45 ms
arcing time
10 ... 15 ms
control version of the switch operating mechanism
Standard A1 - A2
Auxiliary circuit
number of NC contacts for auxiliary contacts
● instantaneous contact
operational current at AC-12 maximum
1
1
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
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● 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
14 A
● at 600 V rated value
11 A
yielded mechanical performance [hp]
● for single-phase AC motor
— at 110/120 V rated value
1 hp
— at 230 V rated value
2 hp
● for 3-phase AC motor
— at 200/208 V rated value
3 hp
— at 220/230 V rated value
5 hp
— at 460/480 V rated value
10 hp
— at 575/600 V rated value
10 hp
contact rating of auxiliary contacts according to UL
A600 / Q600
Short-circuit protection
product function short circuit protection
No
design of the fuse link
● for short-circuit protection of the main circuit
— with type of coordination 1 required
gG NH 3NA, DIAZED 5SB, NEOZED 5SE: 35 A
— with type of assignment 2 required
gG NH 3NA, DIAZED 5SB, NEOZED 5SE: 20 A
● for short-circuit protection of the auxiliary switch
required
gG: 10 A (500 V, 1 kA)
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,
standing, on horizontal mounting surface
fastening method
screw and snap-on mounting onto 35 mm standard mounting rail
according to DIN EN 50022
● side-by-side mounting
Yes
height
70 mm
width
45 mm
depth
73 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
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— at the side
6 mm
Connections/ Terminals
type of electrical connection
● for main current circuit
spring-loaded terminals
● for auxiliary and control circuit
spring-loaded terminals
● at contactor for auxiliary contacts
Spring-type terminals
● of magnet coil
Spring-type terminals
type of connectable conductor cross-sections
● for main contacts
— solid
2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²
— solid or stranded
2x (0,5 ... 4 mm²)
— finely stranded with core end processing
2x (0.5 ... 2.5 mm²)
— finely stranded without core end processing
2x (0.5 ... 2.5 mm²)
● at AWG cables for main contacts
2x (20 ... 12)
type of connectable conductor cross-sections
● for auxiliary contacts
— solid or stranded
2x (0,5 ... 4 mm²)
— finely stranded with core end processing
2x (0.5 ... 2.5 mm²)
— finely stranded without core end processing
2x (0.5 ... 2.5 mm²)
● at AWG cables for auxiliary contacts
2x (20 ... 12)
● AWG number as coded connectable conductor
cross section for main contacts
20 ... 12
● AWG number as coded connectable conductor
cross section for auxiliary contacts
20 ... 12
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
40 %
● 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
● positively driven operation acc. to IEC 60947-5-1
No
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
Communication/ Protocol
product function bus communication
No
Certificates/ approvals
General Product Approval
EMC
KC
EMC
Declaration of Conformity
Test Certificates
Miscellaneous
Type Test
Certificates/Test
Report
Marine / Shipping
Special Test
Certificate
Marine / Shipping
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other
Confirmation
Railway
Type Test
Certificates/Test
Report
Special Test
Certificate
Special Test
Certificate
Special Test
Certificate
Railway
Special Test
Certificate
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=3RT2018-2XB42-0LA2
Cax online generator
http://support.automation.siemens.com/WW/CAXorder/default.aspx?lang=en&mlfb=3RT2018-2XB42-0LA2
Service&Support (Manuals, Certificates, Characteristics, FAQs,...)
https://support.industry.siemens.com/cs/ww/en/ps/3RT2018-2XB42-0LA2
Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, EPLAN macros, ...)
http://www.automation.siemens.com/bilddb/cax_de.aspx?mlfb=3RT2018-2XB42-0LA2&lang=en
Characteristic: Tripping characteristics, I²t, Let-through current
https://support.industry.siemens.com/cs/ww/en/ps/3RT2018-2XB42-0LA2/char
Further characteristics (e.g. electrical endurance, switching frequency)
http://www.automation.siemens.com/bilddb/index.aspx?view=Search&mlfb=3RT2018-2XB42-0LA2&objecttype=14&gridview=view1
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last modified:
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© Copyright Siemens
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