Home / Siemens / SIRIUS 3RT contactors with extended application range, 3-pole / Siemens 3RT2018-2XB42-2LA2

Siemens

Siemens 3RT2018-2XB42-2LA2

Traction contactor, AC-3e/AC-3, 16 A, 7.5 kW / 400 V, 3-pole, 24-34 V DC, 0.7-1.25* Uc

MPN: 3RT2018-2XB42-2LA2
Category: SIRIUS 3RT contactors with extended application range, 3-pole

Price and lead time confirmed within 1 business day

Request a Quote

12-month warranty (new) · 3-month (used/refurbished)
30-day returns, no restocking fee on unused parts
Ships via

What is the Siemens 3RT2018-2XB42-2LA2?

traction contactor, AC-3e/AC-3, 16 A, 7.5 kW / 400 V, 3-pole, 24-34 V DC, 0.7-1.25* Uc, solid-state operating mechanism, with integrated varistor, auxiliary contacts: 1 NC, spring-loaded terminal, frame size: S00, suspended mounting position

Specifications

General

product brand name	SIRIUS
product designation	Power 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
product extension — auxiliary switch	Yes
power loss [W] for rated value of the current — at AC in hot operating state	6.6 W
power loss [W] for rated value of the current — at AC in hot operating state per pole	2.2 W
power loss [W] for rated value of the current — without load current share typical	0.7 W
type of calculation of power loss current-dependent	quadratic
insulation voltage — of main circuit with degree of pollution 3 rated value	690 V
insulation voltage — of auxiliary circuit with degree of pollution 3 rated value	690 V
surge voltage resistance — of main circuit rated value	6 kV
surge voltage resistance — of auxiliary circuit rated value	6 kV
maximum permissible voltage for protective separation between coil and main contacts according to EN 60947-1	400 V
shock resistance at rectangular impulse — at DC	6,7 g / 5 ms, 4,2 g / 10 ms
shock resistance with sine pulse — at DC	10,5 g / 5 ms, 6,6 g / 10 ms
mechanical service life (operating cycles) — of contactor typical	30 000 000
mechanical service life (operating cycles) — of the contactor with added electronically optimized auxiliary switch block typical	5 000 000
mechanical service life (operating cycles) — of the contactor with added auxiliary switch block typical	10 000 000
reference code according to IEC 81346-2	Q
Substance Prohibitance (day/month/year)	10/01/2009
SVHC substance name	Lead CAS-No. 7439-92-1 Lead monoxide (lead oxide) CAS-No. 1317-36-8 2-methyl-1-(4-methylthiophenyl)-2-morpholinopropan-1-one CAS-No. 71868-10-5 Melamine CAS-No. 108-78-1
Net Weight	0.294 kg

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
relative humidity minimum	10 %
relative humidity at 55 °C according to IEC 60068-2-30 maximum	95 %

Main circuit

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
operating voltage — at AC-3e rated value maximum	690 V
operational current — at AC-1 at 400 V at ambient temperature 40 °C rated value	22 A
operational current — at AC-1 — up to 690 V at ambient temperature 40 °C rated value	22 A
operational current — at AC-1 — up to 690 V at ambient temperature 60 °C rated value	20 A
operational current — at AC-2 at 400 V rated value	16 A
operational current — at AC-3 — at 400 V rated value	16 A
operational current — at AC-3 — at 500 V rated value	12.4 A
operational current — at AC-3 — at 690 V rated value	8.9 A
operational current — at AC-3e — at 400 V rated value	16 A
operational current — at AC-3e — at 500 V rated value	12.4 A
operational current — at AC-3e — at 690 V rated value	8.9 A
operational current — 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
minimum cross-section in main circuit — 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
operational current for approx. 200000 operating cycles at AC-4 — at 690 V rated value	4.4 A
operational current — at 1 current path at DC-1 — at 24 V rated value	20 A
operational current — at 1 current path at DC-1 — at 110 V rated value	2.1 A
operational current — at 1 current path at DC-1 — at 220 V rated value	0.8 A
operational current — at 1 current path at DC-1 — at 440 V rated value	0.6 A
operational current — at 1 current path at DC-1 — at 600 V rated value	0.6 A
operational current — with 2 current paths in series at DC-1 — at 24 V rated value	20 A
operational current — with 2 current paths in series at DC-1 — at 110 V rated value	12 A
operational current — with 2 current paths in series at DC-1 — at 220 V rated value	1.6 A
operational current — with 2 current paths in series at DC-1 — at 440 V rated value	0.8 A
operational current — with 2 current paths in series at DC-1 — at 600 V rated value	0.7 A
operational current — with 3 current paths in series at DC-1 — at 24 V rated value	20 A
operational current — with 3 current paths in series at DC-1 — at 110 V rated value	20 A
operational current — with 3 current paths in series at DC-1 — at 220 V rated value	20 A
operational current — with 3 current paths in series at DC-1 — at 440 V rated value	1.3 A
operational current — with 3 current paths in series at DC-1 — at 600 V rated value	1 A
operational current — at 1 current path at DC-3 at DC-5 — at 24 V rated value	20 A
operational current — at 1 current path at DC-3 at DC-5 — at 110 V rated value	0.1 A
operational current — with 2 current paths in series at DC-3 at DC-5 — at 24 V rated value	20 A
operational current — with 2 current paths in series at DC-3 at DC-5 — at 110 V rated value	0.35 A
operational current — with 3 current paths in series at DC-3 at DC-5 — at 24 V rated value	20 A
operational current — with 3 current paths in series at DC-3 at DC-5 — at 110 V rated value	20 A
operational current — with 3 current paths in series at DC-3 at DC-5 — at 220 V rated value	1.5 A
operational current — with 3 current paths in series at DC-3 at DC-5 — at 440 V rated value	0.2 A
operational current — with 3 current paths in series at DC-3 at DC-5 — at 600 V rated value	0.2 A
operating power — at AC-2 at 400 V rated value	7.5 kW
operating power — at AC-3 — at 230 V rated value	4 kW
operating power — at AC-3 — at 400 V rated value	7.5 kW
operating power — at AC-3 — at 500 V rated value	7.5 kW
operating power — at AC-3 — at 690 V rated value	7.5 kW
operating power — at AC-3e — at 230 V rated value	4 kW
operating power — at AC-3e — at 400 V rated value	7.5 kW
operating power — at AC-3e — at 500 V rated value	7.5 kW
operating power — at AC-3e — 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
operating power for approx. 200000 operating cycles at AC-4 — 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
short-time withstand current in cold operating state up to 40 °C — limited to 5 s switching at zero current maximum	169 A; Use minimum cross-section acc. to AC-1 rated value
short-time withstand current in cold operating state up to 40 °C — limited to 10 s switching at zero current maximum	128 A; Use minimum cross-section acc. to AC-1 rated value
short-time withstand current in cold operating state up to 40 °C — limited to 30 s switching at zero current maximum	92 A; Use minimum cross-section acc. to AC-1 rated value
short-time withstand current in cold operating state up to 40 °C — 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
operating frequency — at AC-2 at AC-3e maximum	750 1/h
operating frequency — at AC-4 maximum	250 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
thermal current (Ith) up to 690 V — 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
operating range factor control supply voltage rated value of magnet coil at DC — 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
pickup current mean value	0.18 A
pickup current peak	0.18 A
duration of pickup current	250 ms
holding current mean value	40 mA
closing power of magnet coil at DC	4 W
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	1
number of NC 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
operational current at AC-15 — at 400 V rated value	3 A
operational current at AC-15 — at 500 V rated value	2 A
operational current at AC-15 — at 690 V rated value	1 A
operational current at DC-12 — at 24 V rated value	10 A
operational current at DC-12 — at 48 V rated value	6 A
operational current at DC-12 — at 60 V rated value	6 A
operational current at DC-12 — at 110 V rated value	3 A
operational current at DC-12 — at 125 V rated value	2 A
operational current at DC-12 — at 220 V rated value	1 A
operational current at DC-12 — at 600 V rated value	0.15 A
operational current at DC-13 — at 24 V rated value	10 A
operational current at DC-13 — at 48 V rated value	2 A
operational current at DC-13 — at 60 V rated value	2 A
operational current at DC-13 — at 110 V rated value	1 A
operational current at DC-13 — at 125 V rated value	0.9 A
operational current at DC-13 — at 220 V rated value	0.3 A
operational current at DC-13 — at 600 V rated value	0.1 A

UL/CSA ratings

full-load current (FLA) for 3-phase AC motor — at 480 V rated value	14 A
full-load current (FLA) for 3-phase AC motor — at 600 V rated value	11 A
yielded mechanical performance [hp] — for single-phase AC motor — at 110/120 V rated value	1 hp
yielded mechanical performance [hp] — for single-phase AC motor — at 230 V rated value	2 hp
yielded mechanical performance [hp] — for 3-phase AC motor — at 200/208 V rated value	3 hp
yielded mechanical performance [hp] — for 3-phase AC motor — at 220/230 V rated value	5 hp
yielded mechanical performance [hp] — for 3-phase AC motor — at 460/480 V rated value	10 hp
yielded mechanical performance [hp] — for 3-phase AC motor — at 575/600 V rated value	10 hp
contact rating of auxiliary contacts according to UL	A600 / Q600

Short-circuit protection

design of the miniature circuit breaker for short-circuit protection of the auxiliary circuit up to 230 V	C characteristic: 10 A; 0.4 kA
design of the fuse link — for short-circuit protection of the main circuit — with type of coordination 1 required	gG: 50 A (690 V, 100 kA), aM: 25 A (690 V, 100 kA), BS88: 50 A (415 V, 80 kA)
design of the fuse link — for short-circuit protection of the main circuit — with type of coordination 2 required	gG: 25 A (690 V, 100 kA), aM: 20 A (690 V, 100 kA), BS88: 25 A (415 V, 80 kA)
design of the fuse link — for short-circuit protection of the auxiliary switch required	gG: 10 A (690 V, 1 kA)

Installation/ mounting/ dimensions

mounting position	hanging, on horizontal mounting surface
fastening method side-by-side mounting	Yes
fastening method	screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 50022
height	70 mm
width	45 mm
depth	73 mm
required spacing — with side-by-side mounting — forwards	10 mm
required spacing — with side-by-side mounting — upwards	10 mm
required spacing — with side-by-side mounting — downwards	10 mm
required spacing — with side-by-side mounting — at the side	0 mm
required spacing — for grounded parts — forwards	10 mm
required spacing — for grounded parts — upwards	10 mm
required spacing — for grounded parts — at the side	6 mm
required spacing — for grounded parts — downwards	10 mm
required spacing — for live parts — forwards	10 mm
required spacing — for live parts — upwards	10 mm
required spacing — for live parts — downwards	10 mm
required spacing — for live parts — at the side	6 mm

Connections/ Terminals

type of electrical connection — for main current circuit	spring-loaded terminals
type of electrical connection — for auxiliary and control circuit	spring-loaded terminals
type of electrical connection — at contactor for auxiliary contacts	Spring-type terminals
type of electrical connection — of magnet coil	Spring-loaded terminal
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
type of connectable conductor cross-sections — for main contacts — solid or stranded	2x (0,5 ... 4 mm²)
type of connectable conductor cross-sections — for main contacts — finely stranded with core end processing	2x (0.5 ... 2.5 mm²)
type of connectable conductor cross-sections — for main contacts — finely stranded without core end processing	2x (0.5 ... 2.5 mm²)
type of connectable conductor cross-sections — for 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)
type of connectable conductor cross-sections — for auxiliary contacts — finely stranded with core end processing	2x (0.5 ... 2.5 mm²)
type of connectable conductor cross-sections — for auxiliary contacts — finely stranded without core end processing	2x (0.5 ... 2.5 mm²)
type of connectable conductor cross-sections — for 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

product function — mirror contact according to IEC 60947-4-1	Yes
product function — positively driven operation according to IEC 60947-5-1	No
product function — suitable for safety function	Yes
suitability for use safety-related switching OFF	Yes
service life maximum	20 a
test wear-related service life necessary	Yes
proportion of dangerous failures — with low demand rate according to SN 31920	40 %
proportion of dangerous failures — with high demand rate according to SN 31920	73 %
B10 value with high demand rate according to SN 31920	1 000 000
failure rate [FIT] with low demand rate according to SN 31920	100 FIT
device type according to ISO 13849-1	3
overdimensioning according to ISO 13849-2 necessary	Yes
safety device type according to IEC 61508-2	Type A
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

Communication/ Protocol

product function bus communication

Downloads & documentation

Official documents from Siemens, downloaded directly from the manufacturer.

Data sheets & manuals

Product data sheet 3RT2018-2XB42-2LA2PDF

3RT2018-2XB42-2LA2: frequently asked questions

When can 3RT2018-2XB42-2LA2 be shipped?

3RT2018-2XB42-2LA2 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.

Can I pick up 3RT2018-2XB42-2LA2 in person?

Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.

Is express delivery available?

Yes — mention it when you request a quote for 3RT2018-2XB42-2LA2 and we'll include express shipping options in our reply.

My factory is down and I need this urgently — can you help?

For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for 3RT2018-2XB42-2LA2, subject to availability and destination.