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Siemens 3RT2026-1AF04 — Contactors

Siemens 3RT2026-1AF04 SIRIUS Power Contactor, Size S0, 21 A

MPN3RT2026-1AF04
Active

Siemens SIRIUS power contactor, Size S0, 3RT2026-1AF04, 21 A at 480 V AC-3, screw terminals, snap-on DIN rail mount.

Siemens 3RT2026-1AF04 datasheet (PDF)
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

3RT2026-1AF04 — Identification
ParameterValue
Contactor frame sizeS0
3RT2026-1AF04 — 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 V6 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2026-1AF04 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.25
Rated value @ 50 Hz110 V
3RT2026-1AF04 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2026-1AF04 — 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)
3RT2026-1AF04 — 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
3RT2026-1AF04 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2026-1AF04 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2026-1AF04 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth141 mm
3RT2026-1AF04 — Specifications
ParameterValue
At AC4 ... 16 ms

Product details

SIRIUS Size S0 power contactor — 21 A at 480 V AC-3

The Siemens SIRIUS 3RT2026-1AF04 is a Size S0 power contactor rated 21 A at 480 V in AC-3 duty — that's the motor-switching current, not the resistive-heater current. AC-3 is the standard motor-load rating (starting and disconnecting running motors), so this contactor handles a 3-phase motor pulling up to 21 A under full load at 480 V. No auxiliary switch block included — the main contacts are the only switching path.

Wire range: solid or stranded 1–10 mm² for the main circuit; auxiliary wiring accepts 2x (0.5–1.5 mm²) or 2x (0.75–2.5 mm²) solid/stranded. Arcing time 10 ms at AC. Mechanical life typical 10 million operations.

Frequently asked questions

Where can I buy the 3RT2026-1AF04 and get a price?

This part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing.

What are the key ratings for this contactor?

Size S0 frame, 21 A at 480 V AC-3 motor-switching duty, screw terminals, snap-on 35 mm DIN rail mount, operating temperature -25 to +60 °C, mechanical life 10 million operations.

Will the 3RT2026-1AF04 drop into a panel specified around the 3RT2016-1AG62?

Both are Size S0 contactors with the same 45 mm width, 85 mm height, 141 mm depth, and DIN rail mounting. The 3RT2026-1AF04 carries a higher AC-3 current rating (21 A vs the peer's rating), so verify the load current matches. The mounting hole pattern and DIN rail clip are identical — no rewiring of the panel footprint needed.

MPN
3RT2026-1AF04