Siemens 3RA1445-8XB20-1AG2
MPN3RA1445-8XB20-1AG2
Contactor assembly Star-delta (wye-delta) (pre-assembled) with timing relay on the front AC-3, 75 kW/400 V, 3-pole Size S3, S3, S2 Electrically interlocked Screw terminal 110 V AC, 50/60 Hz!!! Phased-out product!!! Successor is SIRIUS 3RA2
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Product designation | contactor assembly |
| Main circuit poles | 3 |
| Brand | SIRIUS |
| Reference designation (IEC 81346-2) | Q |
| Parameter | Value |
|---|---|
| Rated motor power at 400 V | 75 kW |
| Rated insulation voltage Ui (AC, pollution degree 3) | 690 V |
| Parameter | Value |
|---|---|
| Rated voltage range at 50 Hz | 110 V |
| Control supply voltage type | AC |
| Auxiliary switch extension | Yes |
| Parameter | Value |
|---|---|
| Main circuit connection type | screw-type terminals |
| Mounting / fastening method | screw fixing |
| Mounting position | with vertical mounting surface +/-180° rotatable, with vertical mounting surface +/- 30° tiltable to the front and back |
| Width | 218 mm |
| Height | 180 mm |
| Depth | 194 mm |
| Parameter | Value |
|---|---|
| Operating temperature range | -25 ... +60 °C |
| Storage temperature range | -55 ... +80 °C |
| Transport temperature range | -55 ... +80 °C |
| Pollution degree | 3 |
MPN
3RA1445-8XB20-1AG2