Siemens 3RA2125-4BA26-0BB4
MPN3RA2125-4BA26-0BB4
FUSELESS MOTOR STARTER DIRECT START 600V AC SZ S0 14-20A 24V DC SCREW CONNECTION FOR SCREW MOUNTING OR 35 MM RAIL-MOUNTING TYPE OF COORDINATION 2 IQ = 50 KA ALSO FULFILLS TYPE OF COORDINATION 1 1NO+1NC (MSP) 1NO+1NC (CONTACTOR)
StockContact for availability
MOQ1 pcs
Sourced new & surplus through independent channelsListing updated Jun 2026
Specifications
Identification
| Parameter | Value |
|---|---|
| Product designation | non-fused motor starter 3RA2 |
| Main circuit poles | 3 |
| Brand | SIRIUS |
| Load feeder size | S0 |
| Product design / construction | direct starter |
| Circuit-breaker size | S0 |
| Included contactor (type) | 3RT2026-1BB40 |
| Included circuit-breaker (type) | 3RV2021-4BA15 |
| Included link module (type) | 3RA2921-1BA00 |
Ratings & Performance
| Parameter | Value |
|---|---|
| Rated motor power at 400 V | 7 500 W |
| Operational current Ie, AC-3 at 400 V | 15.5 A |
| Rated voltage at AC-3, max. | 690 V |
| Rated motor power at 460/480 V (hp) | 10 hp |
| Rated motor power at 575/600 V (hp) | 15 hp |
| Rated current at 480 V | 15.2 A |
| Rated current at 600 V | 17.8 A |
| Rated operating frequency | 50 ... 60 Hz |
| Rated impulse withstand voltage (Uimp) | 6 kV |
| Rated insulation voltage Ui (AC, pollution degree 3) | 690 V |
Protection & Tripping
| Parameter | Value |
|---|---|
| Trip class | CLASS 10 |
| Short-circuit protection | Yes |
| Rated short-circuit current at 400 V (IEC 60947-4-1) | 153 000 A |
| Overload release setting range (current) | 14 ... 20 A |
| Overload release type | thermal (bimetallic) |
| Short-circuit trip type | magnetic |
| Duty / utilization type (IEC 60947-6-2) | 2 |
Contacts & Control
| Parameter | Value |
|---|---|
| Rated value | 24 V |
| Auxiliary contacts, NO | 2 |
| Auxiliary contacts, NC | 2 |
| Auxiliary switch extension | Yes |
| Switching contact type | electromechanical |
Mechanical & Connection
| Parameter | Value |
|---|---|
| Main circuit connection type | screw-type terminals |
| Mounting / fastening method | Snap-mounted to DIN rail or screw-mounted with additional push-in lug |
| Mounting position | vertical |
| Width | 45 mm |
| Height | 193.1 mm |
| Depth | 107 mm |
Environmental
| Parameter | Value |
|---|---|
| Operating temperature range | -20 ... +60 °C |
| Storage temperature range | -50 ... +80 °C |
| Transport temperature range | -55 ... +80 °C |
| Pollution degree | 3 |
| Shock resistance (IEC 60068-2-27) | 6g / 11 ms |
MPN
3RA2125-4BA26-0BB4