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Siemens 3RT2018-4AB01 — Contactors

Siemens 3RT2018-4AB01 SIRIUS Power Contactor, Size S00, 24 V

MPN3RT2018-4AB01

Siemens SIRIUS power contactor, 3RT2018-4AB01, Size S00, 24 V 50/60 Hz coil, screw and snap-on DIN rail mount, 73 x 45 x 58 mm.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
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Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

3RT2018-4AB01 — Identification
ParameterValue
Contactor frame sizeS00
3RT2018-4AB01 — 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
3RT2018-4AB01 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.25
Rated value @ 50 Hz24 V
3RT2018-4AB01 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2018-4AB01 — 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)
3RT2018-4AB01 — Connection & Mounting
ParameterValue
Main circuit connectionRing cable lug connection
Aux. / control circuit connectionring terminal lug connection
Mounting methodscrew and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715
Side-by-side mountingYes
3RT2018-4AB01 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2018-4AB01 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2018-4AB01 — Mechanical
ParameterValue
Width45 mm
Height58 mm
Depth73 mm
3RT2018-4AB01 — Specifications
ParameterValue
At AC4 ... 15 ms

Product details

It carries a 24 V 50/60 Hz coil and includes an auxiliary switch, so it handles both the main power path and a feedback signal to the PLC without an add-on block.

The ring cable lug connection on the magnet coil means you terminate the coil wires with a ring terminal, not a fork or pin; factor that into your wire-prep step. Switching frequency reaches 1 000 cycles per hour under AC-1, 750 under AC-3, and 250 under AC-4. For a conveyor jogging station at 10 cycles per minute, you are inside the AC-3 limit. Clearance distances are tight: 10 mm upwards and forwards, 6 mm at the side. That lets you pack contactors side-by-side on the rail, but keep the 10 mm above for arc-chute venting — don't bury it under a cable duct. The 60 °C ceiling is typical for a ventilated enclosure; if your panel sits in a non-vented steel box next to a furnace, derate or add forced air.

Frequently asked questions

Will the 3RT2018-4AB01 replace a 3RT2016-1AG62 without rewiring?

Yes — both are Size S00, same 45 mm width, same snap-on DIN rail mount. The 3RT2018-4AB01 adds a built-in auxiliary switch that the 3RT2016 lacks, so you gain a feedback contact without changing the panel layout.

MPN
3RT2018-4AB01