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Siemens 3RT2026-2AL20-1AA0 — Contactors

Siemens SIRIUS 3RT2026-2AL20-1AA0 Power Contactor, Size S0,

MPN3RT2026-2AL20-1AA0
Active

Siemens SIRIUS, power contactor, size S0, 3RT2026-2AL20-1AA0, 24 VDC coil rated 10 A, spring-type terminals, 45 mm wide, screw and snap-on mounting onto 35 mm DIN rail.

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

Specifications

3RT2026-2AL20-1AA0 — Identification
ParameterValue
Contactor frame sizeS0
3RT2026-2AL20-1AA0 — 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
3RT2026-2AL20-1AA0 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.25
Rated value @ 50 Hz230 V
3RT2026-2AL20-1AA0 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2026-2AL20-1AA0 — 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)
3RT2026-2AL20-1AA0 — Connection & Mounting
ParameterValue
Main circuit connectionspring-loaded terminals
Aux. / control circuit connectionspring-loaded terminals
Conductor cross-section, solid1 ... 10 mm²
Conductor cross-section, solid or stranded2x (0.5 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715
Side-by-side mountingYes
3RT2026-2AL20-1AA0 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2026-2AL20-1AA0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2026-2AL20-1AA0 — Mechanical
ParameterValue
Width45 mm
Height102 mm
Depth97 mm
3RT2026-2AL20-1AA0 — Specifications
ParameterValue
At AC4 ... 16 ms

Product details

The contactor measures 45 mm wide, 102 mm high, and 97 mm deep, and mounts via screw or snap-on onto 35 mm DIN rail per DIN EN 60715. It is designed for standing installation on a horizontal surface.

The 24 VDC coil draws 0.25 A at 50 Hz and 0.28 A at 60 Hz — a tight range that keeps the control transformer sizing predictable across line frequencies. The contactor's switching frequency varies by duty: up to 1000 cycles/hour at AC-1 (resistive loads), 750 at AC-2 and AC-3 (motor starting/running), and 250 at AC-4 (plugging/inching). For AC-3e (enhanced motor starting) it's also 750 cycles/hour.

Integration notes

The spring-type terminals accept solid or stranded wire 1–10 mm², or 2x (0.5–2.5 mm²) for daisy-chaining. Arcing time is 10 ms, so coordination with upstream fuses or breakers should account for that let-through energy.

Frequently asked questions

Where can I buy 3RT2026-2AL20-1AA0?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What are the key dimensions of 3RT2026-2AL20-1AA0?

Width 45 mm, height 102 mm, depth 97 mm. It mounts on 35 mm DIN rail with 10 mm clearance above, below, and forward, and 6 mm at the sides.

What wire sizes does the spring terminal accept?

Solid or stranded 1–10 mm² on the main circuit, and 2x (0.5–2.5 mm²) for auxiliary wiring.

How does 3RT2026-2AL20-1AA0 compare to 3RT2015-2AP01?

Both are SIRIUS size S0 contactors, but 3RT2015-2AP01 is a smaller-frame variant with lower current ratings. The 3RT2026-2AL20-1AA0 carries a 24 VDC coil rated 10 A, while the 3RT2015-2AP01 typically serves lower-load circuits. Panel cutouts and DIN rail footprint are the same, so it drops in without rewiring if the load current is within its rating.

MPN
3RT2026-2AL20-1AA0