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Siemens 3RT2026-1AF00 — Contactors

Siemens 3RT2026-1AF00 SIRIUS Power Contactor, Size S0

MPN3RT2026-1AF00
Active

Siemens SIRIUS 3RT2026-1AF00 power contactor, Size S0, 21 A at 480 V AC-3, 3-pole, screw and snap-on mounting onto 35 mm DIN rail, screw-type coil terminals.

$114.53 – $175.98Ref. price · indicative, final on quote
Siemens 3RT2026-1AF00 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RT2026-1AF00 — Identification
ParameterValue
Contactor frame sizeS0
3RT2026-1AF00 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V15.5 A
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V3 hp
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2026-1AF00 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.25
Rated value @ 50 Hz110 V
3RT2026-1AF00 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2026-1AF00 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 100 A (690 V, 100 kA), aM: 50 A (690 V, 100 kA), BS88: 100 A (415 V, 80 kA)
Short-circuit coordination type 2, fusegG: 35A (690V, 100kA), aM: 20A (690V, 100kA), BS88: 35A (415V, 80kA)
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)
3RT2026-1AF00 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
Conductor cross-section, solid1 ... 10 mm²
Conductor cross-section, solid or stranded2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 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
3RT2026-1AF00 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2026-1AF00 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2026-1AF00 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth97 mm
3RT2026-1AF00 — Specifications
ParameterValue
At AC4 ... 16 ms

Product details

Size S0 — panel fit and mounting

The 3RT2026-1AF00: The contactor is Size S0, with a width of 45 mm, depth of 97 mm, and height of 85 mm — these dimensions determine the DIN-rail footprint and the clearance needed in the enclosure.

Motor duty ratings — AC-3 at 480 V

The headline motor rating is 21 A at 480 V in AC-3 duty — this is the current the contactor can switch motor loads under typical starting conditions, making it a right-sized spec for a 10–15 hp motor at 480 V depending on the full-load current. The contactor includes a built-in auxiliary switch, so no separate aux block is needed for basic status feedback — confirm the contact configuration matches your control circuit.

MPN
3RT2026-1AF00