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Siemens 3RK4320-3HQ51-1BA3 — Motor Starters

Siemens 3RK4320-3HQ51-1BA3

MPN3RK4320-3HQ51-1BA3

SIRIUS MCU motor starter Enclosure degree of protection IP54 metal Communication AS-Interface electromechanically switching Short-circuit protection with circuit breaker Reversing starter Brake 400 V AC (internal) Performance class 3.20 A Motor circuit breaker with bi-metal thermal Rotary operating mechanism gray/black Connection power M screw connection Standard product

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

3RK4320-3HQ51-1BA3 — Identification
ParameterValue
Product designationmotor starter MCU for AS-Interface
Main circuit poles3
BrandSIRIUS
Product design / constructionreversing starter
Reference designation (IEC 81346-2)Q
3RK4320-3HQ51-1BA3 — Protection & Tripping
ParameterValue
Trip classCLASS 10
Overload release setting range (current)2.2 ... 3.2 A
Duty / utilization type (IEC 60947-6-2)1
3RK4320-3HQ51-1BA3 — Contacts & Control
ParameterValue
Switching contact typeelectromechanical
3RK4320-3HQ51-1BA3 — Communication
ParameterValue
AS-Interface protocol supportYes
3RK4320-3HQ51-1BA3 — 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
MPN
3RK4320-3HQ51-1BA3