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Siemens 3RT2018-1AK61 — Contactors

Siemens 3RT2018-1AK61 SIRIUS Power Contactor, Size S00, 24 V

MPN3RT2018-1AK61
Active

Siemens SIRIUS power contactor, size S00, 3RT2018-1AK61, 24 VDC coil, screw-type terminals, 10 A rated at 24 V, 2 hp at 230 V, snap-on DIN rail mount.

$26.67Ref. price · indicative, final on quote
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

3RT2018-1AK61 — Identification
ParameterValue
Contactor frame sizeS00
3RT2018-1AK61 — 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
3RT2018-1AK61 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.24
Rated value @ 50 Hz110 V
3RT2018-1AK61 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2018-1AK61 — 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)
3RT2018-1AK61 — 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
3RT2018-1AK61 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2018-1AK61 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2018-1AK61 — Mechanical
ParameterValue
Width45 mm
Height58 mm
Depth73 mm
3RT2018-1AK61 — Specifications
ParameterValue
At AC4 ... 15 ms

Product details

It snaps onto a 35 mm DIN rail per DIN EN 60715 and accepts screw-type terminations on both coil and main contacts, with a solid or stranded wire range of 0.5 to 4 mm². The 24 VDC coil draws 0.24 A holding power at both 50 and 60 Hz, and the contactor carries a 10 A rated current at 24 V and a 2 hp rating at 230 V.

The AC-3 switching frequency of 750 operations per hour tells you this contactor is rated for frequent motor starting — typical for conveyor or pump duty cycles. The auxiliary switch (built-in) lets you wire a feedback signal to the PLC without adding a separate block.

Mounting and clearance — panel integration

For a panel builder, the 73 mm depth means it fits standard 200 mm deep enclosures without crowding the door-mounted devices.

Frequently asked questions

Where can I buy 3RT2018-1AK61 and what is the lead time?

This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm lead-time estimate.

What is 3RT2018-1AK61's listed depth?

The depth is 73 mm, which fits standard 200 mm deep enclosures without crowding door-mounted devices.

What wire sizes does the 3RT2018-1AK61 accept?

Solid or stranded wire from 0.5 to 4 mm² on the main contacts, with multi-conductor options: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm².

Will 3RT2018-1AK61 drop into a panel specified around 3RT2016-1AG61 without rewiring?

Both are size S00 contactors on the same 45 mm DIN-rail footprint, so the mechanical fit is identical. The 3RT2018-1AK61 uses a 24 VDC coil versus the 3RT2016-1AG61's coil voltage — verify the control voltage matches before swapping. The screw-terminal wire range is the same (0.5 to 4 mm²), so no rewiring of the power circuit is needed if the coil supply is compatible.

MPN
3RT2018-1AK61