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Siemens 3RT2026-2AH00 — Contactors

Siemens 3RT2026-2AH00 SIRIUS Power Contactor, Size S0, 21 A

MPN3RT2026-2AH00
Active

Siemens SIRIUS power contactor, Size S0, 3RT2026-2AH00, spring-type terminals, 21 A at 480 V, screw and snap-on mounting onto 35 mm DIN rail.

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

Specifications

3RT2026-2AH00 — Identification
ParameterValue
Contactor frame sizeS0
3RT2026-2AH00 — 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
3RT2026-2AH00 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.25
Rated value @ 50 Hz48 V
3RT2026-2AH00 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2026-2AH00 — 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)
3RT2026-2AH00 — 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 standard mounting rail according to DIN EN 60715
Side-by-side mountingYes
3RT2026-2AH00 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2026-2AH00 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2026-2AH00 — Mechanical
ParameterValue
Width45 mm
Height102 mm
Depth97 mm
3RT2026-2AH00 — Specifications
ParameterValue
At AC4 ... 16 ms

Product details

It mounts via screw or snap-on onto 35 mm standard mounting rail per DIN EN 60715, with a ±180° rotation possible on a vertical surface and ±22.5° tilt forward/backward. The auxiliary contact block carries 10 A at 24 V, 2 A at 48/60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, 3 A at 400 V, and 0.6 A at 440 V — covering a wide control-voltage range for mixed-voltage panels.

The contactor body measures 45 mm wide, 102 mm high, and 97 mm deep. These clearances govern panel layout density — stacking contactors without the 6 mm side gap may cause thermal derating or arc-flash bridging. Wire range: solid or stranded 1–10 mm² for the main circuit, with 2x (0.5–2.5 mm²) for auxiliary connections. Spring-clamp terminals accept ferruled stranded; strip length and ferrule size follow the terminal manufacturer's spec for reliable pull-out force.

Operating Duty and Thermal Limits

Maximum switching frequency: 1,000 cycles/h at AC-1, 750 cycles/h at AC-2 and AC-3, 750 cycles/h at AC-3e, and 250 cycles/h at AC-4. Arcing time at AC is 4–16 ms, with a rated arcing time of 10 ms.

Frequently asked questions

What is 3RT2026-2AH00's listed depth?

The depth is 97 mm. Combined with the 45 mm width and 102 mm height, this defines the panel footprint.

What is the wire range for solid conductors?

Solid conductors: 1 to 10 mm² for the main circuit. Auxiliary connections accept 2x (0.5 to 2.5 mm²) solid or stranded.

MPN
3RT2026-2AH00