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Siemens 3RK4320-3CQ51-0BA2 — Motor Starters

Siemens 3RK4320-3CQ51-0BA2 Motor Starter, 1 A AC-3, CLASS 10

MPN3RK4320-3CQ51-0BA2

Siemens SIRIUS 3RK4320-3CQ51-0BA2 motor starter, AS-Interface, direct starter, 1 A AC-3 at 400 V, CLASS 10, IP54, 205 x 245 x 215 mm.

Siemens 3RK4320-3CQ51-0BA2 datasheet (PDF)
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

3RK4320-3CQ51-0BA2 — Identification
ParameterValue
Product designationmotor starter MCU for AS-Interface
Main circuit poles3
BrandSIRIUS
Product design / constructiondirect starter
Reference designation (IEC 81346-2)Q
3RK4320-3CQ51-0BA2 — Protection & Tripping
ParameterValue
Trip classCLASS 10
Overload release setting range (current)0.7 ... 1 A
Duty / utilization type (IEC 60947-6-2)1
3RK4320-3CQ51-0BA2 — Contacts & Control
ParameterValue
Switching contact typeelectromechanical
3RK4320-3CQ51-0BA2 — Communication
ParameterValue
AS-Interface protocol supportYes
3RK4320-3CQ51-0BA2 — 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

AS-Interface motor starter, CLASS 10, 1 A

The 3RK4320-3CQ51-0BA2: It carries a CLASS 10 trip curve for bimetal motor protection, meaning it trips within 10 seconds at 600% of the set current — a standard fit for protecting general-purpose motors against overload without nuisance tripping during start-up.

Ratings and panel fit

The control supply is 20.4... 26.4 V DC. The enclosure measures 205 mm deep, 245 mm wide, and 215 mm tall, with an IP54 rating that keeps dust and splash out in cabinet or standalone mounting. Ambient operating range is -25 to +50 °C.

Frequently asked questions

What is the rated current for 3RK4320-3CQ51-0BA2 in AC-3 duty?

The AC-3 rated current at 400 V is 1 A. This is the value for switching motor loads under typical starting conditions.

MPN
3RK4320-3CQ51-0BA2