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Siemens 3RA2327-8XB30-2FB4 — Motor Starters

Siemens 3RA2327-8XB30-2FB4 SIRIUS reversing contactor

MPN3RA2327-8XB30-2FB4
Active

Siemens SIRIUS 3RA2327-8XB30-2FB4 reversing contactor assembly, S0 size, 15 kW at 400 V AC-3, 27 A at 480/600 V, spring-loaded terminals, diode surge suppressor, screw and snap-on 35 mm DIN rail.

StockContact for availability
Lead timeIn Stock wk
MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Specifications

Identification

3RA2327-8XB30-2FB4 — Identification
ParameterValue
Product designationReversing contactor assembly
Main circuit poles3
BrandSIRIUS
Reference designation (IEC 81346-2)Q

Ratings & Performance

3RA2327-8XB30-2FB4 — Ratings & Performance
ParameterValue
Rated motor power at 400 V15 kW
Rated motor power at 460/480 V (hp)20 hp
Rated motor power at 575/600 V (hp)25 hp
Rated current at 480 V27 A
Rated current at 600 V27 A

Contacts & Control

3RA2327-8XB30-2FB4 — Contacts & Control
ParameterValue
Control supply voltage typeDC
Auxiliary switch extensionYes

Communication

3RA2327-8XB30-2FB4 — Communication
ParameterValue
AS-Interface protocol supportNo

Mechanical & Connection

3RA2327-8XB30-2FB4 — Mechanical & Connection
ParameterValue
Main contact conductor range (AWG)1x (18 ... 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
Height114 mm
Depth145 mm

Environmental

3RA2327-8XB30-2FB4 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C

Product details

Motor power and duty ratings

The 3RA2327-8XB30-2FB4: For heavy jogging or plugging duty, the AC-4 rating at 400 V is 11 kW — a real-world derating of about 27 % from the AC-3 figure, which is the number to use for reversing or inching applications where the contacts break full-load current.

Mounting and panel integration

The assembly mounts on a 35 mm standard DIN rail with either screws or the snap-on foot — the S0 contactor frame is 90 mm wide and 114 mm tall, with a depth of 145 mm including the arc chamber and terminals.

Termination and wiring

Main current circuit uses spring-loaded terminals — no screw torque to check, no vibration loosening. Accepts solid or stranded wire from 1 to 10 mm² (2x per clamp) and AWG 18 to 8 for the main contacts. The magnet coil also terminates with spring-type terminals, so the control wiring is tool-less as well. The coil is rated 24 V DC and includes a built-in diode combination surge suppressor — no external flyback diode needed on the PLC output.

Lifecycle and sourcing

No stock-holding claim — quoted per RFQ.

Frequently asked questions

What is the mechanical life of this reversing contactor assembly?

The typical mechanical life of the contactor is 10,000,000 operations — this is the figure for the contactor itself, not the full assembly under load.

What compliance documentation does Siemens provide for 3RA2327-8XB30-2FB4?

Standard Siemens documentation includes the CE declaration and the product drawing with mounting and wiring details.

MPN
3RA2327-8XB30-2FB4