ABB | OT
Product overview
The ABB OT125F3 is a 3-pole front-operated switch disconnector for base or DIN-rail mounting, with an AC-22A operational current of 125A at 400V. The exact ABB base-device ordering code is 1SCA105033R1001. Door handle, shaft and auxiliary contacts are separately ordered.
Key features
- Compact front-operated manual isolation
- Base or DIN-rail mounting with protected terminals
- Separately ordered door handles, shafts and snap-on auxiliary contacts
Technical selection summary
| Complete model | OT125F3 |
|---|---|
| ABB order code, base device | 1SCA105033R1001 |
| Number of poles | 3P |
| Rated operational current AC-22A, 400V | 125A |
| Rated operational current AC-23A, 400V | 90A, per referenced ABB technical catalogue |
| Rated thermal current Ith, open air | 125A |
| Operation | Front operated, manual switch-disconnector |
| Mounting | Base or DIN rail |
| Main terminals | Protected terminal clamps, IP20 |
| Cu cable cross section | 10-70mm² |
| Handle and shaft | Not included with base device; select separate operating accessories |
| Applicable standard | IEC 60947-3 |
| Dimensions | See model-specific original ABB dimensional drawing below |
Current ratings depend on voltage and utilization category; AC-22A and AC-23A are not interchangeable. This is a switch-disconnector, without overload or short-circuit tripping. Provide upstream protection. Door operation requires both a compatible handle and a shaft cut/selected for the enclosure depth.
Accessories and installation
The selected pistol handle uses a 6mm OXP shaft; choosing a handle automatically adds a valid shaft length. OHB is black, OHY red/yellow and OHG grey. OA1G10 (1NO, early break) mounts on the right and OA1G01 (1NC) on the left, up to two of each. Auxiliary quantities and separate ABB codes are recorded in the enquiry.
| Door Handle | OHB45J6 — 1SCA022380R8770; OHY45J6 — 1SCA022380R8930; OHG45J6 — 1SCA022380R8850 |
|---|---|
| Shaft Length | 150mm — 1SCA022295R5600; 170mm — 1SCA108224R1001; 265mm — 1SCA108225R1001; 400mm — 1SCA108226R1001 |
| Auxiliary Contacts | 1NO — 1SCA022353R4970; 1NC — 1SCA022353R4890; 1NO+1NC — 1SCA022353R4970, 1SCA022353R4890; 2NO+2NC — 2 × 1SCA022353R4970, 2 × 1SCA022353R4890 |
Typical applications
- Panel main isolation and maintenance switching
- Motor and distribution circuits with upstream protection
ABB OT complete reference catalogue PDF
Product reference images and drawings
Original ABB catalogue pages retain headings, illustrations and technical footnotes. The technical summary above applies to the exact product on this page; reference pages also include other sizes.
