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Siemens 3RA1423-8XC21-1AL2 — Motor Starters

Siemens 3RA1423-8XC21-1AL2 SIRIUS Star-Delta Contactor

MPN3RA1423-8XC21-1AL2

Siemens SIRIUS 3RA1423-8XC21-1AL2 wye-delta contactor assembly, three S0 contactors, 25 A AC-3 at 400 V, 11 kW motor rating, screw and snap-on DIN rail mounting, IP20 front protection.

$159.82Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

3RA1423-8XC21-1AL2 — Identification
ParameterValue
Product designationcontactor assembly
Main circuit poles3
BrandSIRIUS
3RA1423-8XC21-1AL2 — Ratings & Performance
ParameterValue
Rated motor power at 400 V11 kW
Rated insulation voltage Ui (AC, pollution degree 3)690 V
3RA1423-8XC21-1AL2 — Contacts & Control
ParameterValue
Rated voltage range at 50 Hz230 V
Control supply voltage typeAC
Auxiliary switch extensionYes
3RA1423-8XC21-1AL2 — Mechanical & Connection
ParameterValue
Main circuit connection typescrew-type terminals
Mounting / fastening methodscrew and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022
Mounting positionwith vertical mounting surface +/-180° rotatable, with vertical mounting surface +/- 30° tiltable to the front and back
Width158 mm
Height88 mm
Depth135 mm
3RA1423-8XC21-1AL2 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Transport temperature range-55 ... +80 °C
Pollution degree3

Product details

The Siemens 3RA1423-8XC21-1AL2 is a SIRIUS wye-delta contactor assembly built from three S0-size contactors in a single unit. The assembly handles motors up to 11 kW at 400 V, 15.6 kW at 500 V, and 19 kW at 690 V.

The mounting position allows vertical surface orientation with ±180° rotation and ±30° tilt forward/back. Side-by-side mounting requires zero clearance at the sides — no additional spacing needed between assemblies. Dimensions are 158 mm wide, 88 mm tall, 135 mm deep. Front-side protection is IP20, suitable for enclosed panel installation.

For Type 2 coordination (contactor remains usable after a fault), the fuse requirement is gL/gG 25 A. The assembly ships without a built-in surge suppressor. It accepts an auxiliary switch extension — the product extension auxiliary switch is supported.

Frequently asked questions

Where can I buy 3RA1423-8XC21-1AL2?

The 3RA1423-8XC21-1AL2 is sourced to order against an RFQ through independent distribution channels. Submit a request for quote to confirm current availability and pricing.

Does 3RA1423-8XC21-1AL2 include a timing relay?

The 3RA1423-8XC21-1AL2 is a wye-delta contactor assembly. The evidence does not list an integrated timing relay as part of this order code. The assembly includes three S0 contactors and supports an auxiliary switch extension, but a separate timing relay would need to be added externally for the star-delta transition sequence.

What are the full specifications of 3RA1423-8XC21-1AL2?

Key specifications: wye-delta contactor assembly, three S0 contactors, 25 A AC-3 at 400 V, 11 kW at 400 V, 15.6 kW at 500 V, 19 kW at 690 V. Dimensions 158 x 88 x 135 mm. Screw and snap-on DIN rail mounting. IP20 front protection. Operating temperature -25 to +60 °C. Pollution degree 3. Type 1 fuse 63 A gL/gG, Type 2 fuse 25 A gL/gG. No built-in surge suppressor. Auxiliary switch extension supported.

What is the difference between 3RA1423 and 3RA2423?

The evidence does not contain specifications for a 3RA2423 order code. The 3RA1423-8XC21-1AL2 is a SIRIUS wye-delta contactor assembly with three S0 contactors. Without data on the 3RA2423, a direct comparison cannot be made from this record.

MPN
3RA1423-8XC21-1AL2