Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
1SCA022280R2520 ABB 250A 3-Pole IP54 Steel Enclosed Change-Over Switch
ABB OT250KLAA3C is a 250 A three-pole IP54 steel enclosed I-O-II change-over switch with open top and bottom cable entries for reliable manual source selection in industrial and commercial power systems.
£2,862.67
Why Choose the ABB OT250KLAA3C 250A 3-Pole IP54 Enclosed Change-Over Switch?
The ABB OT250KLAA3C is a heavy-duty 250 A three-pole steel enclosed change-over switch designed for dependable switching between two electrical supplies or circuits. Part of the ABB OT enclosed switching range, it combines a robust change-over mechanism with a steel sheet enclosure for industrial power distribution, standby supply and manual source-selection applications.
The OT250KLAA3C uses a front-operated I-O-II change-over mechanism, providing clearly defined source 1, OFF and source 2 positions. A black pistol-type operating handle provides straightforward local control, while neutral and PE terminals are included to simplify integration into suitable three-phase electrical installations.
Rated at 250 A, the OT250KLAA3C provides 250 A AC-22A duty and 250 A AC-23A duty at up to 415 V. Its IP54 steel enclosure has open top and bottom cable-entry positions, allowing suitable C-flange or ring-flange cable-entry components to be selected separately according to installation requirements.
Key Advantages
- Heavy-duty 250 A three-pole enclosed change-over switch.
- I-O-II operation provides clear source 1, OFF and source 2 selection.
- Rated for 250 A AC-23A duty at up to 415 V.
- Robust IP54 steel sheet enclosure for industrial installations.
- Open top and bottom cable entries allow the cable-entry arrangement to be configured for the installation.
- Compatible with separately ordered C-flange and ring-flange cable-entry systems.
- Neutral and PE terminals are included.
Key Features
- ABB OT enclosed change-over switch range.
- 250 A rated operational current.
- Three-pole change-over configuration.
- Front-operated I-O-II switching.
- 250 A AC-22A rated operational current.
- 250 A AC-23A at up to 415 V.
- IP54 protection rating.
- Steel sheet enclosed construction.
- Black pistol-type operating handle.
- Neutral terminal included.
- PE terminal included.
- Open cable-entry positions at both top and bottom.
- C-flange or ring-flange cable-entry components available separately.
- Suitable for manual transfer and source-selection applications.
Reliable Manual Change-Over and Source Selection
Enclosed change-over switches such as the ABB OT250KLAA3C provide a manual means of selecting between two electrical sources or circuits while incorporating a defined OFF position between them. The I-O-II operating sequence makes the switch suitable for applications such as mains-to-generator transfer, alternative feeder selection and industrial supply change-over arrangements.
The OT250KLAA3C combines a 250 A three-pole change-over mechanism with an IP54 steel enclosure and flexible open cable-entry arrangement. Its high AC-22A and AC-23A ratings make it suitable for substantial industrial loads, while separately selected cable-entry flanges allow the enclosure to be configured around the cabling requirements of the installation.
Typical Applications
- Manual mains-to-generator change-over systems.
- Alternative power-source selection.
- Industrial feeder and supply change-over.
- Three-phase machinery and equipment supply selection.
- Commercial and industrial power distribution systems.
- Backup and standby power installations.
- Manual transfer arrangements requiring an I-O-II switching sequence.
Technical Specifications
Tick the specs you need, then view products that match.
| Material | Steel | |
|---|---|---|
| Device Type | Enclosed changeover switch | |
| Series | OT Enclosed Change-Over Switches | |
| Product group | 311019-Metal Enclosed (Loadbreak) | |
| ABB order code | OT250KLAA3C | |
| ABB order number | 1SCA022280R2520 | |
| Product type | Steel enclosed change-over switch | |
| Rated operational current | 250 A | |
| Number of poles | 3 | |
| Operating positions | I-O-II | |
| AC-22A rated operational current | 250 A | |
| AC-23A rated operational current at ≤415 V | 250 A | |
| Protection rating | IP54 | |
| Enclosure material | Steel sheet | |
| Handle | Black pistol type, I-O-II indication | |
| Neutral terminal | Included | |
| PE terminal | Included | |
| Top cable entry | Open | |
| Bottom cable entry | Open | |
| Cable-entry options | C-flange or ring-flange entries ordered separately | |
| Enclosure dimensions (H × W × D) | 600 × 400 × 230 mm | |
| Weight | approx. 36 kg |
Frequently Asked Questions
What is the ABB OT250KLAA3C used for?
The ABB OT250KLAA3C is a 250 A three-pole enclosed change-over switch designed for manual selection between two electrical supplies or circuits, with an OFF position between the two sources.
What is the current rating of the ABB OT250KLAA3C?
The OT250KLAA3C has a rated operational current of 250 A, including a 250 A AC-23A rating at up to 415 V.
What does I-O-II mean on the OT250KLAA3C?
The I-O-II operating sequence provides three positions: source or circuit I, OFF, and source or circuit II. This makes the switch suitable for manual source-selection and change-over applications.
What protection rating does the OT250KLAA3C provide?
The ABB OT250KLAA3C is supplied in a steel sheet enclosure rated IP54.
What cable-entry arrangement does the OT250KLAA3C use?
The OT250KLAA3C is supplied with open top and bottom cable-entry positions. Suitable C-flange or ring-flange cable-entry components are selected and ordered separately according to installation requirements.
Trusted ABB Switching Technology
ABB OT enclosed change-over switches combine dependable manual source selection with robust metal enclosure construction and high-capacity switching performance for industrial, commercial and standby power applications.
