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Siemens 3RT2018-1AD02 — Contactors

Siemens 3RT2018-1AD02 SIRIUS Power Contactor, Size S00, 24 V

MPN3RT2018-1AD02
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Siemens SIRIUS power contactor, size S00, 3RT2018-1AD02, 24 VDC coil, screw-type terminals, 10 A at 24 V rated, screw and snap-on DIN rail mounting.

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

3RT2018-1AD02 — Identification
ParameterValue
Contactor frame sizeS00
3RT2018-1AD02 — 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
3RT2018-1AD02 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.25
Rated value @ 50 Hz42 V
3RT2018-1AD02 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2018-1AD02 — 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)
3RT2018-1AD02 — 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
3RT2018-1AD02 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2018-1AD02 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2018-1AD02 — Mechanical
ParameterValue
Width45 mm
Height58 mm
Depth73 mm
3RT2018-1AD02 — Specifications
ParameterValue
At AC4 ... 15 ms

Product details

It carries a 24 VDC coil with screw-type terminals and includes an auxiliary switch.

For heavier AC-4 duty (plugging, inching), the maximum drops to 250 cycles per hour — respect that derating if the application involves frequent reversing or jogging. Mechanical life is typical 30 million operations.

The Size S00 footprint is 45 mm wide, 58 mm high, 73 mm deep. For side-by-side DIN rail mounting, allow 6 mm clearance at the side, 10 mm upwards, 10 mm downwards, and 10 mm forwards for arc chute venting and wiring access. The mounting position is flexible: +/-180° rotation on a vertical surface, and can be tilted forward/backward by +/-22.5° — useful when the panel layout forces a non-standard orientation.

Wire termination

Main contact terminals accept solid or stranded wire from 0.5 to 4 mm². For two-wire termination, it accepts 2x (0.5...1.5 mm²), 2x (0.75...2.5 mm²), or 2x 4 mm². Coil terminals are screw-type.

Operating temperature range is -25 to +60 °C during operation, with storage from -55 to +80 °C. The arcing time at AC is 4 to 15 ms, with a typical arcing time of 10 to 15 ms — relevant for coordination with upstream overcurrent devices. The contactor operates at both 50 Hz and 60 Hz with the same 0.25 A coil draw at each frequency.

Frequently asked questions

What wire sizes does the 3RT2018-1AD02 accept?

Solid or stranded wire from 0.5 to 4 mm². For two-wire termination, it accepts 2x (0.5...1.5 mm²), 2x (0.75...2.5 mm²), or 2x 4 mm². Coil terminals are screw-type with the same range.

MPN
3RT2018-1AD02