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Siemens 3RT2018-2XB41-0LA2 — Contactors

Siemens 3RT2018-2XB41-0LA2 SIRIUS Power Contactor, S00, DC C

MPN3RT2018-2XB41-0LA2
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Siemens SIRIUS, power contactor, 3RT2018-2XB41-0LA2, size S00, DC coil 24-34 V, spring-type terminals, 45 mm width, 73 mm depth, 70 mm height.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

3RT2018-2XB41-0LA2 — Identification
ParameterValue
Contactor frame sizeS00
3RT2018-2XB41-0LA2 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V11.5 A
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V2 hp
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2018-2XB41-0LA2 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2018-2XB41-0LA2 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
3RT2018-2XB41-0LA2 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG NH 3NA, DIAZED 5SB, NEOZED 5SE: 35 A
Short-circuit coordination type 2, fusegG NH 3NA, DIAZED 5SB, NEOZED 5SE: 20 A
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)
3RT2018-2XB41-0LA2 — Connection & Mounting
ParameterValue
Main circuit connectionspring-loaded terminals
Aux. / control circuit connectionspring-loaded terminals
Conductor cross-section, solid2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²
Conductor cross-section, solid or stranded2x (0,5 ... 4 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 2.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 50022
Side-by-side mountingYes
3RT2018-2XB41-0LA2 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2018-2XB41-0LA2 — Environmental
ParameterValue
Operating temperature range-40 ... +70 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2018-2XB41-0LA2 — Mechanical
ParameterValue
Width45 mm
Height70 mm
Depth73 mm

Product details

It switches main contacts rated 20-12 A and includes an auxiliary switch. The spring-type coil terminals accept solid conductors: 2x (0.5-1.5 mm²), 2x (0.75-2.5 mm²), and 2x 4 mm².

DC switching capacity — what the ratings mean

The DC coil draws a 2.3 A inrush peak and holds at 24-34 V. Switching capacity varies by voltage: 10 A at 24 V, 2 A at 48 V, 2 A at 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, 3 A at 400 V, 0.2 A at 440 V, 14 A at 480 V, and 2 A at 500 V (-). The 14 A at 480 V is the highest DC rating — that's the figure to size against for 480 VDC loads. At 24 VDC, the 10 A rating covers most control-circuit and small-motor applications.

Panel integration and clearances

The 45 mm wide, 70 mm tall, 73 mm deep footprint fits standard DIN-rail enclosures.

Frequently asked questions

What compliance documentation is available for 3RT2018-2XB41-0LA2?

As a Siemens SIRIUS product, it typically carries CE, UL, CSA, and RoHS/REACH declarations. Specific certification markings should be verified against the nameplate and manufacturer declarations for your region.

MPN
3RT2018-2XB41-0LA2