Siemens SIRIUS 3RA24 size S3-S3-S2 star-delta (wye-delta) contactor assemblies: line, star and delta contactors with timing function, fully wired and tested. For reduced-current starting of induction motors up to 90 kW at 400 V.
Technical data
| Series | 3RA24 |
|---|---|
| Product type | Star-delta (wye-delta) assembly |
| Contactor sizes | S3-S3-S2 |
| Rated current Ie (400 V) | 115–160 A |
| Motor rating (400 V) | up to 90 kW |
| Coil | AC (50/60 Hz) or AC/DC (20–33 V, integrated varistor) |
| Terminals | Screw |
| Condition | Fully wired and tested |
| Standard | IEC 60947-4-1 |
Article numbers
| Ie 400 V (A) | 230 V (kW) | 400 V (kW) | 690 V (kW) | Coil voltage | Screw | Spring-loaded |
|---|---|---|---|---|---|---|
| 115 | 30 | 55 | 90 | 24 V AC | 3RA2444-8XF32-1AC2 | – |
| 115 | 30 | 55 | 90 | 110 V AC | 3RA2444-8XF32-1AG2 | – |
| 115 | 30 | 55 | 90 | 230 V AC | 3RA2444-8XF32-1AL2 | – |
| 150 | 37 | 75 | 110 | 24 V AC | 3RA2445-8XF32-1AC2 | – |
| 150 | 37 | 75 | 110 | 110 V AC | 3RA2445-8XF32-1AG2 | – |
| 150 | 37 | 75 | 110 | 230 V AC | 3RA2445-8XF32-1AL2 | – |
| 160 | 45 | 90 | 132 | 24 V AC | 3RA2446-8XF32-1AC2 | – |
| 160 | 45 | 90 | 132 | 110 V AC | 3RA2446-8XF32-1AG2 | – |
| 160 | 45 | 90 | 132 | 230 V AC | 3RA2446-8XF32-1AL2 | – |
| 115 | 30 | 55 | 90 | 20–33 V AC/DC | 3RA2444-8XF32-1NB3 | – |
| 150 | 37 | 75 | 110 | 20–33 V AC/DC | 3RA2445-8XF32-1NB3 | – |
| 160 | 45 | 90 | 132 | 20–33 V AC/DC | 3RA2446-8XF32-1NB3 | – |
Technical data and article numbers are based on Siemens catalog IC 10 · 2026 (chapter 3, contactor assemblies) and are for information only. Image is representative.
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Tags: 3RA24 S3, siemens star delta, 3RA24, wye-delta combination, star-delta starter, 3RA2444-8XF32-1AC2, 3RA2444-8XF32-1AG2, 3RA2444-8XF32-1AL2, 3RA2445-8XF32-1AC2, 3RA2445-8XF32-1AG2, 3RA2445-8XF32-1AL2, 3RA2446-8XF32-1AC2, 3RA2446-8XF32-1AG2, 3RA2446-8XF32-1AL2, 3RA2444-8XF32-1NB3, 3RA2445-8XF32-1NB3, 3RA2446-8XF32-1NB3