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Siemens 3RT2018-2FB44-3MA0 — Contactors

Siemens SIRIUS 3RT2018-2FB44-3MA0 Power Contactor, S00, 24 V

MPN3RT2018-2FB44-3MA0
Active

Siemens SIRIUS power contactor, size S00, 24 V DC coil rated 6 A, spring-type terminals, screw and snap-on mounting onto 35 mm DIN rail per DIN EN 60715, 45 mm wide, 70 mm high, 121 mm deep.

$54.61Ref. 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

3RT2018-2FB44-3MA0 — Identification
ParameterValue
Contactor frame sizeS00
3RT2018-2FB44-3MA0 — 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 V6 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2018-2FB44-3MA0 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2018-2FB44-3MA0 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2018-2FB44-3MA0 — 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)
3RT2018-2FB44-3MA0 — Connection & Mounting
ParameterValue
Main circuit connectionspring-loaded terminals
Aux. / control circuit connectionspring-loaded terminals
Conductor cross-section, solid0.5 ... 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 60715
Side-by-side mountingYes
3RT2018-2FB44-3MA0 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2018-2FB44-3MA0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2018-2FB44-3MA0 — Mechanical
ParameterValue
Width45 mm
Height70 mm
Depth121 mm

Product details

The 24 V DC coil pulls 6 A at rated voltage, and the spring-type terminals (accepting 0.5 to 4 mm² solid or stranded) speed up wiring — no screwdriver needed on the coil side.

Mounting & Footprint

The S00 footprint is compact: 45 mm wide, 70 mm high, 121 mm deep.

Ratings & Duty

The coil holds at 24 V DC nominal. Switching frequency varies by duty: up to 1 000 operations per hour at AC-1 (resistive), 750/h at AC-2 and AC-3 (motor starting), and 250/h at AC-4 (plugging/inching).

Operating Environment

Frequently asked questions

What is the coil voltage and current draw on this contactor?

The coil is rated 24 V DC and draws 6 A at the rated value.

MPN
3RT2018-2FB44-3MA0