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Siemens 3RT2018-1AB01 — Contactors

Siemens 3RT2018-1AB01 SIRIUS Power Contactor, Size S00

MPN3RT2018-1AB01
Active

Siemens SIRIUS power contactor, 3RT2018-1AB01, Size S00, 24 VDC coil, screw-type terminals, 45 mm wide, for DIN rail mounting.

$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

3RT2018-1AB01 — Identification
ParameterValue
Contactor frame sizeS00
3RT2018-1AB01 — 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
3RT2018-1AB01 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.25
Rated value @ 50 Hz24 V
3RT2018-1AB01 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2018-1AB01 — 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)
3RT2018-1AB01 — 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
3RT2018-1AB01 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2018-1AB01 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2018-1AB01 — Mechanical
ParameterValue
Width45 mm
Height58 mm
Depth73 mm
3RT2018-1AB01 — Specifications
ParameterValue
At AC4 ... 15 ms

Product details

Coil is 24 VDC, terminated with screw-type terminals.

Maximum switching rates depend on the duty category: 1 000 cycles/hour for AC-1 resistive loads, 750 cycles/hour for AC-2 and AC-3 motor starting, and 250 cycles/hour for AC-4 plugging or inching. The AC-3e rating also holds at 750 cycles/hour. Arcing time is 10 to 15 ms at AC, with a solid/stranded wire range of 0.5 to 4 mm² (single or 2x conductors). Main contact ratings cover 20 to 12 A depending on voltage and duty — verify the specific load curve for your motor nameplate.

Frequently asked questions

What are the key dimensions of the 3RT2018-1AB01?

Width 45 mm, height 58 mm, depth 73 mm. It mounts on 35 mm DIN rail per DIN EN 60715.

What wire sizes does the 3RT2018-1AB01 accept?

Solid or stranded wire 0.5 to 4 mm², including 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), and 2x 4 mm².

Does the 3RT2018-1AB01 replace the 3RT2026-1AG20?

No — the 3RT2026-1AG20 is a larger frame size (S2 vs S00) with higher current ratings. The 3RT2018-1AB01 will not drop into a panel wired for the 3RT2026 without rewiring and resizing the enclosure cutout.

MPN
3RT2018-1AB01