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Siemens 3RT1026-1AP05 — Contactors

Siemens 3RT1026-1AP05 SIRIUS S0 Power Contactor, 3 NO, 10A A

MPN3RT1026-1AP05

Siemens SIRIUS S0 power contactor, 3RT1026-1AP05, 3 NO main contacts, screw terminals, 55 x 85 x 91 mm, DIN rail mount, AC-12 10 A at 400 V.

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

3RT1026-1AP05 — Identification
ParameterValue
Contactor frame sizeS0
3RT1026-1AP05 — 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
3RT1026-1AP05 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz230 V
3RT1026-1AP05 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1026-1AP05 — 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
3RT1026-1AP05 — 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
3RT1026-1AP05 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1026-1AP05 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
3RT1026-1AP05 — Mechanical
ParameterValue
Width55 mm
Height85 mm
Depth91 mm

Product details

Integrator note — SIRIUS S0 power contactor

The Siemens 3RT1026-1AP05 is a SIRIUS S0-frame power contactor with three normally-open main contacts and zero NC main contacts. It is rated for AC-12 duty at 10 A (resistive loads on control circuits) and can switch motor loads in AC-2 at 11 kW at 400 V or handle AC-4 reversing duty at 15.5 A at 400 V. The contactor mounts via screw or snap-on onto 35 mm DIN rail per DIN EN 50022, and the S0 footprint — 55 mm wide, 85 mm tall, 91 mm deep — fits standard panel layouts. Side-by-side mounting is permitted, so multiple units pack tightly on the rail.

Main current circuit connections use screw-type terminals. The solid/stranded wire range for main contacts accepts 2x (1 to 2.5 mm²), 2x (2.5 to 6 mm²), or max 2x 10 mm²; AWG equivalents are 2x (16 to 12), 2x (14 to 10), or 1x 8. Auxiliary/control circuit terminals accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or max 2x (0.75 to 4 mm²).

For type 2 coordination (contactor remains operational after a fault), use a gL/gG 35 A fuse. These ratings apply to the main circuit and let you size the branch protection correctly.

Frequently asked questions

What is the closest functional alternative to 3RT1026-1AP05?

The 3RT1023-1AL20 is a smaller S0-frame contactor (lower current rating) and will not drop into the same panel position without checking the coil voltage and load current. The 3RT1026-1AP05 has a higher AC-12 rating (10 A vs the 3RT1023-1AL20's lower rating) and different terminal wire ranges. Verify your load before substituting.

Where can I buy 3RT1026-1AP05 and how is it quoted?

This part is sourced to order through independent distribution. Submit an RFQ for current pricing and availability — both are confirmed at quote time. Volume and scheduled orders are handled on request.

What compliance documentation does Siemens provide for 3RT1026-1AP05?

The contactor carries a reference code per DIN EN 81346-2 (Q for power switching equipment). Standard Siemens documentation includes the declaration of conformity for the Low Voltage Directive; specific RoHS and REACH declarations are available from Siemens support. The part is designed for pollution degree 3 environments.

MPN
3RT1026-1AP05