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Siemens 3RA2328-8XB30-1AP6 — Motor Starters

Siemens SIRIUS 3RA2328-8XB30-1AP6 Reversing Contactor, 18.5

MPN3RA2328-8XB30-1AP6
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Siemens SIRIUS reversing contactor assembly, Size S0, 3RA2328-8XB30-1AP6, 18.5 kW at 400 V AC-3, screw-type terminals, 35 mm rail mount.

$186.06Ref. price · indicative, final on quote
Siemens 3RA2328-8XB30-1AP6 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RA2328-8XB30-1AP6 — Identification
ParameterValue
Product designationReversing contactor assembly
Main circuit poles3
BrandSIRIUS
Reference designation (IEC 81346-2)Q
3RA2328-8XB30-1AP6 — Ratings & Performance
ParameterValue
Rated motor power at 400 V18.5 kW
Rated motor power at 460/480 V (hp)25 hp
Rated motor power at 575/600 V (hp)25 hp
Rated current at 480 V34 A
Rated current at 600 V27 A
3RA2328-8XB30-1AP6 — Contacts & Control
ParameterValue
Rated voltage range at 50 Hz220 V
Control supply voltage typeAC
Auxiliary switch extensionYes
3RA2328-8XB30-1AP6 — Communication
ParameterValue
AS-Interface protocol supportNo
3RA2328-8XB30-1AP6 — Mechanical & Connection
ParameterValue
Main contact conductor range (AWG)2x (16 ... 12), 2x (14 ... 8)
Mounting / fastening methodscrew and snap-on mounting onto 35 mm standard mounting rail
Mounting position+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface
Width90 mm
Height101 mm
Depth97 mm
3RA2328-8XB30-1AP6 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C

Product details

The Siemens SIRIUS 3RA2328-8XB30-1AP6 is a reversing contactor assembly in the Size S0 frame, rated 18.5 kW at 400 V AC-3. It ships with two 3RT2028-1AP60 contactors pre-wired for direction reversal, saving panel space and wiring time compared to building the interlock yourself.

The 18.5 kW at 400 V AC-3 rating means this assembly handles reversing duty on a standard 3-phase induction motor up to that power — typical for conveyors, hoists, or pump stations where forward/reverse is needed. The AC-3 category covers starting and plugging of squirrel-cage motors, so the contactors are sized for the inrush without welding contacts. Size S0 frame (90 mm wide, 101 mm high, 97 mm deep) fits into the common 35 mm DIN-rail panel layout.

Main current circuit and coil both use screw-type terminals. Solid wire capacity: 2x (1... 2.5 mm²) and 2x (2.5... 10 mm²). Stranded: 2x (0.5... 1.5 mm²) and 2x (0.75... 2.5 mm²). This covers standard panel wiring from control to power circuits.

Frequently asked questions

What is the closest functional second-source or alternative?

The assembly contains two 3RT2028-1AP60 contactors. If you need a single contactor for a non-reversing application, the 3RT2028-1AP60 itself is the direct building block. For a reversing assembly with a different rating, the 3RT2027-1AP60-based variant (lower power) is a form-fit-function alternative within the same S0 frame.

Will 3RA2328-8XB30-1AP6 drop into a panel specified around 3RT2027-1AP60?

Yes, both use the Size S0 frame and mount on 35 mm DIN rail with the same footprint. The 3RA2328-8XB30-1AP6 is a higher-rated assembly (18.5 kW vs the 3RT2027-1AP60's lower rating), so it will physically fit but may require checking the upstream protection and cable sizing for the higher current.

What are the key dimensions for panel layout?

Width 90 mm, height 101 mm, depth 97 mm. Clearance: 6 mm upwards, forwards, downwards, and to the side; 0 mm backwards (flush to the rail).

MPN
3RA2328-8XB30-1AP6