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Siemens 3RT2018-1AU01 — Contactors

Siemens 3RT2018-1AU01 SIRIUS Contactor, Size S00, 10 A Aux

MPN3RT2018-1AU01
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Siemens SIRIUS 3RT2018-1AU01 power contactor, size S00, 45 mm width, screw-type coil terminals, auxiliary switch, 10 A at 24 V rated value, screw and snap-on mounting on 35 mm DIN rail.

StockContact for availability
Lead timeIn Stock wk
MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Specifications

Identification

3RT2018-1AU01 — Identification
ParameterValue
Contactor frame sizeS00

Ratings & Performance

3RT2018-1AU01 — 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

Control & Coil

3RT2018-1AU01 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.25
Rated value @ 50 Hz240 V

Contacts & Poles

3RT2018-1AU01 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)

Protection & Coordination

3RT2018-1AU01 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 50A (690V,100kA), aM: 25A (690V,100kA), BS88: 50A (415V,80kA)
Short-circuit coordination type 2, fusegG: 25A (690V,100kA), aM: 20A (690V,100kA), BS88: 25A (415V,80kA)
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)

Connection & Mounting

3RT2018-1AU01 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
Conductor cross-section, solid0.5 ... 4 mm²
Conductor cross-section, solid or stranded2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715
Side-by-side mountingYes

Durability

3RT2018-1AU01 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000

Environmental

3RT2018-1AU01 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m

Mechanical

3RT2018-1AU01 — Mechanical
ParameterValue
Width45 mm
Height58 mm
Depth73 mm

Specifications

3RT2018-1AU01 — Specifications
ParameterValue
At AC4 ... 15 ms

Product details

Panel fit and mounting flexibility

The 3RT2018-1AU01: Its 45 mm width and 58 mm height fit standard panel layouts, with 73 mm depth leaving room for wiring behind the rail.

Auxiliary contact ratings and switching capability

The AC-3e rating also caps at 750/h.

Wiring and termination

The magnet coil uses screw-type terminals.

Environmental and endurance specs

The contactor is rated for 30 million typical mechanical operations, which suits high-cycle applications like conveyor or packaging lines.

Frequently asked questions

How can I order the 3RT2018-1AU01 or check availability?

This part is quoted to order against your BOM quantity.

MPN
3RT2018-1AU01