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OT250E12CP ABB 250A 3-Pole Manual Change-Over Switch
ABB OT250E12CP is a 250 A 3-pole manual I-O-II open-transition change-over switch with the operating mechanism between the poles for reliable three-phase power source selection.
£729.77
Why Choose the ABB OT250E12CP Manual Change-Over Switch?
The ABB OT250E12CP is a robust 250 A 3-pole manual change-over switch designed for reliable transfer between two electrical power sources. As part of the ABB OT change-over switch range, it provides dependable I-O-II source selection for industrial, commercial and infrastructure power distribution systems.
The OT250E12CP uses an open-transition I-O-II switching sequence, providing a defined OFF position between the two source positions. This break-before-make arrangement ensures that one source is disconnected before the alternative source is connected, while the operating mechanism is positioned between the poles for this specific configuration.
With a rated current of 250 A and a 3-pole configuration, the OT250E12CP is suitable for three-phase source-transfer applications. It is supplied with a black plastic IP65 I-O-II pistol-type handle, operating shaft and terminal bolt kit, providing the principal operating components required for integration into an electrical distribution assembly.
Key Advantages
- Heavy-duty 250 A manual change-over switch for electrical power distribution.
- 3-pole configuration suitable for three-phase source switching.
- I-O-II open-transition operation provides a defined OFF position between sources.
- Operating mechanism positioned between the poles.
- Supplied with a black plastic IP65 pistol-type handle and operating shaft.
- Handle is padlockable in the O position to support secure isolation.
Key Features
- ABB OT change-over switch series.
- 250 A rated current.
- 3-pole manual change-over configuration.
- I-O-II switching operation.
- Open-transition, break-before-make source transfer.
- Mechanism located between the poles.
- Black plastic IP65 I-O-II pistol-type handle included.
- Handle padlockable in the O position.
- Door interlocking in the I and II positions and when padlocked.
- Operating shaft and terminal bolt kit included.
Reliable Manual Power Source Change-Over
Manual change-over switches provide controlled selection between two electrical supplies. The ABB OT250E12CP uses an open-transition I-O-II sequence, disconnecting the active source before connecting the alternative source and providing a stable OFF position for controlled source selection and isolation.
The OT250E12CP is engineered for demanding low-voltage distribution applications. Its 250 A current rating, three-pole construction and mechanism-between-poles arrangement make it suitable for switchboards, generator change-over systems and other installations requiring dependable manual control of three-phase power sources.
Typical Applications
- Mains and alternative power source selection.
- Generator and mains change-over systems.
- Industrial low-voltage distribution switchboards.
- Commercial and infrastructure electrical distribution.
- Three-phase source-transfer systems.
- Manufacturing plants and industrial electrical installations.
Technical Specifications
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| Operation | Manual | |
|---|---|---|
| Device Type | Manual changeover switch | |
| Series | OT Change-Over Switches | |
| ABB product ID | 1SCA022776R9320 | |
| Product type | Manual change-over switch | |
| Rated current | 250 A | |
| Number of poles | 3 | |
| Operation | Manual | |
| Switch positions | I-O-II | |
| Transition type | Open transition | |
| Mechanism position | Between the poles | |
| AC-21A / AC-22A rated current up to 415 V | 250 A | |
| Rated apparent power at 400 V | 170 kVA | |
| AC-23A rated current at 400–415 V | 250 A | |
| Handle | Black plastic IP65 I-O-II pistol-type handle | |
| Operating shaft | OXP6X161, 161 mm | |
| Terminal bolt kit | M8 × 25 | |
| Handle padlocking | Padlockable in O position | |
| Weight | 3.3 kg |
Frequently Asked Questions
What is the ABB OT250E12CP used for?
The ABB OT250E12CP is used to manually transfer a three-phase electrical load between two power sources in industrial and commercial distribution systems.
What is the rated current of the OT250E12CP?
The OT250E12CP has a rated current of 250 A.
How many poles does the ABB OT250E12CP have?
The OT250E12CP is a 3-pole manual change-over switch intended for three-phase source-switching applications.
What switching sequence does the OT250E12CP use?
The switch uses an I-O-II open-transition sequence, providing a defined OFF position between source I and source II.
Does the ABB OT250E12CP include a handle and shaft?
Yes. The OT250E12CP is supplied with a black plastic IP65 I-O-II pistol-type handle and a 161 mm operating shaft, together with the terminal bolt kit.
Trusted by Electrical Professionals Worldwide
ABB OT change-over switches are widely used in industrial and commercial electrical distribution systems where dependable manual source selection, secure isolation and robust switching performance are required.
