Siemens 3RK4320-3AR51-0BA0
MPN3RK4320-3AR51-0BA0
SIRIUS MCU motor starter Enclosure degree of protection IP55 plastic Communication AS-Interface electromechanically switching Short-circuit protection with circuit breaker DOL starter Brake without Performance class 0.63 A Motor circuit breaker with bi-metal thermal Manual operation without Connection power M screw connection Standard product
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Product designation | motor starter MCU for AS-Interface |
| Main circuit poles | 3 |
| Brand | SIRIUS |
| Product design / construction | direct starter |
| Reference designation (IEC 81346-2) | Q |
| Parameter | Value |
|---|---|
| Trip class | CLASS 10 |
| Overload release setting range (current) | 0.45 ... 0.63 A |
| Duty / utilization type (IEC 60947-6-2) | 1 |
| Parameter | Value |
|---|---|
| Switching contact type | electromechanical |
| Parameter | Value |
|---|---|
| AS-Interface protocol support | Yes |
| Parameter | Value |
|---|---|
| Main circuit connection type | screw-type terminals |
| Mounting position | +/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface |
| Width | 182 mm |
| Height | 220 mm |
| Depth | 145 mm |
MPN
3RK4320-3AR51-0BA0