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Siemens 3RK4320-3GQ51-1BA2 — Motor Starters

Siemens 3RK4320-3GQ51-1BA2 Motor Starter, AS-Interface

MPN3RK4320-3GQ51-1BA2

Siemens SIRIUS 3RK4320-3GQ51-1BA2 reversing motor starter, AS-Interface, 2.5 A at 400 V AC-3, CLASS 10, IP54, 205 x 245 x 215 mm.

Siemens 3RK4320-3GQ51-1BA2 datasheet (PDF)
StockContact for availability
Lead time3-5 Days wk
MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Specifications

Identification

3RK4320-3GQ51-1BA2 — Identification
ParameterValue
Product designationmotor starter MCU for AS-Interface
Main circuit poles3
BrandSIRIUS
Product design / constructionreversing starter
Reference designation (IEC 81346-2)Q

Protection & Tripping

3RK4320-3GQ51-1BA2 — Protection & Tripping
ParameterValue
Trip classCLASS 10
Overload release setting range (current)1.8 ... 2.5 A
Duty / utilization type (IEC 60947-6-2)1

Contacts & Control

3RK4320-3GQ51-1BA2 — Contacts & Control
ParameterValue
Switching contact typeelectromechanical

Communication

3RK4320-3GQ51-1BA2 — Communication
ParameterValue
AS-Interface protocol supportYes

Mechanical & Connection

3RK4320-3GQ51-1BA2 — Mechanical & Connection
ParameterValue
Main circuit connection typescrew-type terminals
Mounting position+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface
Width245 mm
Height215 mm
Depth205 mm

Product details

Active production, AS-Interface reversing starter

The Siemens 3RK4320-3GQ51-1BA2 is a SIRIUS reversing motor starter with integrated AS-Interface communication — it bundles a reversing contactor, bimetal overload relay (CLASS 10), and AS-i slave into a single IP54 enclosure.

Panel fit and control wiring

Dimensions are 205 mm deep, 245 mm wide, 215 mm high — occupies a compact footprint for a reversing starter with integrated comms. Control supply is 20.4–26.4 V DC (nominal 24 V DC), with 2 digital inputs for local control signals. The AS-Interface protocol is supported on board — no separate gateway needed for AS-i networks. Ambient temperature range -25 to +50 °C covers most indoor cabinet environments; IP54 means it's protected against dust and splashing water but not washdown.

Sourcing and compliance

Substance prohibition date 05/01/2012 aligns with RoHS compliance. The product carries a reference code per IEC 81346-2 (letter Q).

Frequently asked questions

How can I order 3RK4320-3GQ51-1BA2 and check availability?

Submit a quote request for current pricing and lead time.

MPN
3RK4320-3GQ51-1BA2