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Siemens 3RT1026-1AM20-0UA0 — Contactors

Siemens 3RT1026-1AM20-0UA0 SIRIUS Power Contactor, S0, 11 kW

MPN3RT1026-1AM20-0UA0

Siemens SIRIUS 3RT1026-1AM20-0UA0 power contactor, size S0, 11 kW at 400 V AC-2, 15.5 A AC-4, screw terminals, 45 mm width, current production.

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

3RT1026-1AM20-0UA0 — Identification
ParameterValue
Contactor frame sizeS0
3RT1026-1AM20-0UA0 — Ratings & Performance
ParameterValue
Rated operational current, AC-4 @ 400 V15.5 A
Rated value @ 400 V3 A
Rated value @ 500 V11 kW
Rated value @ 690 V11 kW
Rated value @ 230 V6 A
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT1026-1AM20-0UA0 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz208 V
3RT1026-1AM20-0UA0 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1026-1AM20-0UA0 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusefuse gL/gG: 100 A
Short-circuit coordination type 2, fusefuse gL/gG: 35 A
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RT1026-1AM20-0UA0 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Conductor cross-section, solid2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Side-by-side mountingYes
3RT1026-1AM20-0UA0 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1026-1AM20-0UA0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
3RT1026-1AM20-0UA0 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth91 mm

Product details

It delivers 11 kW at 400 V in AC-2 use (slip-ring motors, moderate overloads) and carries a 15.5 A continuous rating in AC-4 (plugging, inching, reversing). At 45 mm wide and 85 mm tall, it fits a standard S0 footprint — same slot as other SIRIUS S0 contactors, so swapping one in doesn't force a panel layout change.

The AC-2 motor rating of 11 kW at 400 V covers most medium-duty pump and fan loads. For type 2 coordination (fault withstand without welding), the spec calls for a 35 A gL/gG fuse upstream. If you're running type 1 coordination (replace contactor after fault), a 100 A fuse is allowed — that's a wide window for selectivity with upstream breakers. The auxiliary circuit (if fitted) uses the smaller 0.5–4 mm² range. That's enough for a 35 A feeder on the mains and standard 1.5 mm² control wiring.

Frequently asked questions

What is the depth of this contactor?

The depth is 91 mm. That's the dimension from the DIN rail mounting surface to the front of the terminals — important for enclosure depth clearance.

What wire sizes fit the main terminals?

The screw terminals accept 2x (0.5–1.5 mm²), 2x (0.75–2.5 mm²), or max 2x (0.75–4 mm²) for the auxiliary circuit. For the main circuit, they take 2x (1–2.5 mm²), 2x (2.5–6 mm²), or max 2x 10 mm², plus 1x AWG 8.

Will this drop into a panel built for 3RT1017-1AP01?

Both are SIRIUS S0 contactors with the same 45 mm width and DIN-rail mounting, so the footprint and panel cutout are identical. The difference is in the coil voltage and rating — verify your control voltage and load current against the 3RT1026's AC-2/AC-4 ratings before swapping.

MPN
3RT1026-1AM20-0UA0