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Siemens 3RT1026-1AN20 — Contactors

Siemens 3RT1026-1AN20 SIRIUS Power Contactor, S0, 11 kW AC-2

MPN3RT1026-1AN20

Siemens SIRIUS power contactor, size S0, 3RT1026-1AN20, screw-type terminals, 11 kW at AC-2 400 V, 24 VDC coil, IP20 front, snap-on DIN rail mounting.

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

3RT1026-1AN20 — Identification
ParameterValue
Contactor frame sizeS0
3RT1026-1AN20 — 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 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
3RT1026-1AN20 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz220 V
3RT1026-1AN20 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1026-1AN20 — 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
3RT1026-1AN20 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control 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, solid or stranded2x (1 ... 2,5 mm²), 2x (2,5 ... 6 mm²), max. 2x 10 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 standard mounting rail according to DIN EN 50022
Side-by-side mountingYes
3RT1026-1AN20 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1026-1AN20 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Installation altitude, max.2 000 m
3RT1026-1AN20 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth91 mm

Product details

SIRIUS S0 Power Contactor, 11 kW AC-2 — Current Production

The 3RT1026-1AN20: Rated at 11 kW in AC-2 duty at 400 V, this contactor handles slip-ring motor loads where starting current is moderate. For AC-4 reversing or inching duty at 400 V, the thermal current rating drops to 15.5 A — a figure that governs the real-world service life under frequent jogging. Verify the control transformer and free-wheel diode polarity before energizing inductive loads downstream.

Short-Circuit Coordination and Wiring

Type 1 coordination (welding allowed but no fire risk) permits a 100 A gL/gG fuse. This lets the panel designer balance protection level against selectivity with downstream motor starters. Main circuit screw terminals accept 2x (1 to 2.5 mm²) solid/stranded, up to 2x 10 mm² max. Auxiliary control terminals take 2x (0.5 to 1.5 mm²) solid, up to 2x 4 mm² max. AWG equivalents are 2x (16 to 12) for mains and 2x (20 to 16) for auxiliaries.

Substance prohibitance (RoHS) compliance date is 01.07.2006, indicating the design meets EU RoHS 1 requirements. Pollution degree 3 rating means the contactor withstands conductive pollution in industrial environments — no additional conformal coating needed for typical panel conditions.

Frequently asked questions

Where can I buy 3RT1026-1AN20?

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

What is the closest functional alternative to 3RT1026-1AN20?

The 3RT1026-1AB00 is a direct peer in the same S0 frame and AC-2 power rating, but with an AC coil instead of the 24 VDC coil on the -1AN20. If your control voltage is 24 VDC, the -1AN20 is the correct choice; swapping to the -1AB00 would require a different control transformer and wiring.

What are the key ratings of 3RT1026-1AN20?

Rated 11 kW at AC-2 400 V for slip-ring motor loads, 15.5 A at AC-4 400 V for reversing duty. The 24 VDC coil draws 10 A. Short-circuit coordination requires a 35 A gL/gG fuse for Type 2 or 100 A for Type 1.

What compliance documentation does Siemens provide for 3RT1026-1AN20?

RoHS compliance is confirmed with a substance prohibitance date of 01.07.2006. The contactor carries pollution degree 3 rating per IEC 60947, and the reference code per IEC 81346-2 is Q.

MPN
3RT1026-1AN20