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Siemens 3RT2018-2AB01-ZX95 — Contactors

Siemens 3RT2018-2AB01-ZX95 SIRIUS Power Contactor, Size S00,

MPN3RT2018-2AB01-ZX95
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Siemens SIRIUS power contactor, 3RT2018-2AB01-ZX95, Size S00, 24 VDC coil, spring-type terminals, 73 mm depth, 45 mm width.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RT2018-2AB01-ZX95 — Identification
ParameterValue
Contactor frame sizeS00
3RT2018-2AB01-ZX95 — 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
3RT2018-2AB01-ZX95 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.25
Rated value @ 50 Hz24 V
3RT2018-2AB01-ZX95 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2018-2AB01-ZX95 — 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)
3RT2018-2AB01-ZX95 — 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 standard mounting rail according to DIN EN 60715
Side-by-side mountingYes
3RT2018-2AB01-ZX95 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2018-2AB01-ZX95 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2018-2AB01-ZX95 — Mechanical
ParameterValue
Width45 mm
Height70 mm
Depth73 mm
3RT2018-2AB01-ZX95 — Specifications
ParameterValue
At AC4 ... 15 ms

Product details

It mounts via screw or snap-on onto a 35 mm DIN rail per EN 60715, and the Size S00 footprint (70 mm high, 45 mm wide, 73 mm deep) keeps it compact for dense panel layouts. The coil is 24 VDC with spring-type terminals, so no screwdriver is needed for the coil wiring — just strip and push.

The main contacts are rated for 20 to 12 A (AC-3 duty), which covers small to medium motor loads up to 2 hp at 230 V. The AC-3 switching frequency maxes out at 750 operations per hour — adequate for most conveyor and pump cycles, but if you're doing frequent jogging or reversing (AC-4), that drops to 250 ops/h, so plan your duty cycle accordingly. The auxiliary contact block is built in, with breaking capacities ranging from 10 A at 24 V down to 0.2 A at 440 V — verify your pilot circuit voltage against the table to ensure clean dropout.

Wiring and Clearance Notes

For ventilation, maintain 10 mm clearance upward, downward, and forward, plus 6 mm at the sides — these are minimums for heat dissipation at full rated current.

Frequently asked questions

What is the closest functional alternative to the 3RT2018-2AB01-ZX95?

The 3RT2018-2AB02-ZX95 is the closest functional peer. Both are Size S00 SIRIUS contactors with the same frame dimensions and mounting. The key difference is the coil voltage: the -2AB01 variant uses 24 VDC, while the -2AB02 uses a different coil voltage. If your control circuit is 24 VDC, this is the correct variant; otherwise, verify the coil voltage before substituting.

Will the 3RT2018-2AB01-ZX95 drop into a panel specified for the 3RT2018-2AB02-ZX95 without rewiring?

Mechanically yes — both share the same Size S00 footprint and DIN-rail mounting. Electrically, only if the coil voltage matches. The -2AB01 requires 24 VDC; if the panel was wired for a different coil voltage (e.g., 230 VAC), the coil circuit would need rewiring. The main power and auxiliary wiring are identical.

What wire sizes does the 3RT2018-2AB01-ZX95 accept?

The spring-type terminals accept solid or stranded wire from 0.5 to 4 mm², and can take two conductors of the same size per clamp.

What is the physical size of the 3RT2018-2AB01-ZX95?

It measures 70 mm high, 45 mm wide, and 73 mm deep, fitting the Size S00 frame.

MPN
3RT2018-2AB01-ZX95