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OT250E04C ABB 250 A 4-Pole Manual Change-over Switch
ABB OT250E04C is a 250 A 4-pole open-transition manual change-over switch with a left-side operating mechanism, supplied without a handle and shaft for flexible switchboard integration.
£947.52
Why Choose the ABB OT250E04C Manual Change-over Switch?
The ABB OT250E04C is a robust 250 A 4-pole manual change-over switch designed for dependable transfer between two electrical power sources. Supplied under ABB product ID 1SCA022775R4560 and forming part of the ABB OT Change-over Switches range, it provides open-transition switching for industrial and commercial low-voltage power distribution applications.
The OT250E04C features a left-side operating mechanism positioned at the end of the switch and is designed for front operation and base mounting. Its four poles switch simultaneously, while the open-transition arrangement provides break-before-make transfer between power sources for controlled source selection.
With a rated operational current of 250 A, the OT250E04C provides AC-21A, AC-22A and AC-23A ratings of 250 A at 380–415 V, together with an AC-23A operational power rating of 140 kW. This version is supplied without a handle and operating shaft, allowing compatible ABB operating accessories to be selected separately for the switchboard or enclosure design.
Key Advantages
- Heavy-duty 250 A manual change-over switch for power distribution applications.
- 4-pole configuration with simultaneous pole switching.
- Open-transition operation for break-before-make source transfer.
- Left-side operating mechanism located at the end of the switch.
- 250 A AC-23A rating at 380–415 V with 140 kW operational power.
- Supplied without handle and shaft for flexible selection of compatible ABB operating accessories.
Key Features
- ABB OT Change-over Switches series.
- 250 A rated operational current.
- 4-pole manual change-over configuration.
- Open-transition / break-before-make switching.
- 1000 V rated operational and insulation voltage.
- 12 kV rated impulse withstand voltage.
- 8 kA rms for 1 s short-time withstand current.
- Front-operated, base-mounted construction with handle and shaft ordered separately.
Reliable Four-pole Manual Power Source Change-over
Manual change-over switches provide a controlled method of transferring electrical loads between alternative power sources. The ABB OT250E04C uses an open-transition arrangement so the existing connection is broken before the alternative connection is made, supporting controlled source transfer and electrical isolation within suitable distribution systems.
The four poles operate simultaneously, while the left-side mechanism and front-operated, base-mounted construction support practical integration into electrical switchboards. Because the OT250E04C is supplied without a handle and shaft, the operating arrangement can be configured using compatible ABB accessories selected to suit the enclosure and installation requirements.
Typical Applications
- Four-pole mains-to-generator manual change-over systems.
- Industrial electrical distribution switchboards.
- Three-phase and neutral source-transfer applications.
- Commercial power distribution panels.
- Backup and alternative power source selection.
- OEM switchboards and industrial electrical assemblies.
Technical Specifications
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| Mounting Type | Base mounting | |
|---|---|---|
| Operation | Manual | |
| Device Type | Manual changeover switch | |
| Series | OT Change-over Switches | |
| ABB product ID | 1SCA022775R4560 | |
| ABB order code | OT250E04C | |
| Product type | Manual change-over switch | |
| Rated current | 250 A | |
| Number of poles | 4 | |
| Fourth-pole function | Switched simultaneously | |
| Transition type | Open transition / break-before-make | |
| AC-21A rated current at 380–415 V | 250 A | |
| AC-22A rated current at 380–415 V | 250 A | |
| AC-23A rated current at 380–415 V | 250 A | |
| AC-23A operational power at 380–415 V | 140 kW | |
| Rated operational voltage | 1000 V | |
| Rated insulation voltage | 1000 V | |
| Rated impulse withstand voltage | 12 kV | |
| Rated short-time withstand current | 8 kA rms for 1 s | |
| Operating mechanism | Mechanism at end of switch, left side | |
| Operating mode | Front operated | |
| Mounting type | Base mounting | |
| Line terminal arrangement | Top in / bottom out or bottom in / top out | |
| Front degree of protection | IP20 | |
| Operating handle | Not included | |
| Operating shaft | Not included | |
| Dimensions (W × H × D) | 205 × 150 × 160 mm | |
| Product net weight | 4.1 kg | |
| EAN | 6417019252377 |
Frequently Asked Questions
What is the ABB OT250E04C used for?
The ABB OT250E04C is a 250 A 4-pole manual change-over switch designed for controlled transfer between alternative electrical power sources in industrial and commercial distribution systems.
What is the rated current of the ABB OT250E04C?
The OT250E04C has a rated operational current of 250 A, including AC-21A, AC-22A and AC-23A ratings of 250 A at 380–415 V.
How many poles does the OT250E04C have?
The ABB OT250E04C is a 4-pole change-over switch, with the fourth pole switched simultaneously with the other poles.
Where is the operating mechanism on the ABB OT250E04C?
The OT250E04C has its operating mechanism at the end of the switch on the left side and is designed for front operation.
Does the ABB OT250E04C include a handle and operating shaft?
No. The OT250E04C is supplied without a handle and operating shaft, allowing compatible ABB operating accessories to be ordered separately to suit the installation.
Trusted ABB Change-over Switching
ABB OT manual change-over switches provide dependable source-transfer switching for industrial and commercial electrical distribution systems, with the OT250E04C combining 250 A capacity, four-pole simultaneous switching and a left-side operating mechanism for flexible switchboard integration.
