Why Choose the ABB OT2500E12CP 2500 A Manual Changeover Switch?
The ABB OT2500E12CP is a heavy-duty 2500 A, 3-pole manual changeover switch designed for controlled transfer between two electrical power sources in industrial and commercial low-voltage distribution systems. As part of the ABB OT manual changeover switch series, it provides a robust solution for source selection, power distribution and manually operated transfer switching applications.
This switch features a three-position I-0-II operating mechanism, allowing operators to select between two power sources with an intermediate OFF position. Its open-transition, break-before-make switching principle disconnects the active source before connecting the alternative source, helping prevent simultaneous connection of the two supplies during normal changeover operation.
With a rated current of 2500 A, a 3-pole configuration and a rated operational voltage of up to 1000 V AC, the OT2500E12CP is suitable for high-current electrical distribution applications. The switch features a front-operated mechanism positioned between the poles and is supplied with a black plastic IP65 pistol-type operating handle and shaft, providing convenient manual operation from an electrical enclosure.
Key Advantages
- Heavy-duty 2500 A manual changeover switch for high-current power distribution.
- 3-pole configuration suitable for three-phase electrical switching applications.
- I-0-II operating positions provide clear selection between two power sources and an OFF position.
- Open-transition switching disconnects one source before connecting the other.
- Manual front operation provides direct operator control without a motorised actuator.
- IP65-rated pistol-type operating handle suitable for compatible enclosure installations.
- Padlockable OFF position helps prevent unauthorised switch operation.
- Integrated door interlocking functionality supports controlled access to electrical enclosures.
- Operating mechanism positioned between the poles for the E12 configuration.
- Suitable for industrial mains selection, generator changeover and alternative supply switching.
- Designed for integration into high-current switchboards and electrical distribution assemblies.
- Part of the established ABB OT changeover switch range.
Key Features
- ABB OT manual changeover switch series.
- 2500 A rated operational current for applicable utilisation categories.
- 3-pole switching arrangement.
- I-0-II manual changeover operation.
- Open-transition, break-before-make switching.
- Front-operated mechanism positioned between the poles.
- Black plastic pistol-type operating handle included.
- IP65 protection rating for the operating handle when correctly installed.
- Operating shaft included for enclosure door operation.
- Padlockable in the OFF position.
- Door interlocking in the I and II positions and when padlocked.
- Base-mounted installation for electrical switchboards.
- Designed for high-current electrical distribution and manual source transfer.
- Compatible with suitable ABB OT changeover switch accessories.
- Designed in accordance with applicable IEC 60947 switchgear standards.
Technical Specifications
- Manufacturer: ABB
- Series: OT Manual Changeover Switches
- Model: OT2500E12CP
- ABB order code: OT2500E12CP
- ABB manufacturer product ID: 1SCA103891R1001
- Product group: OT Change over Switches
- Product type: Manual changeover switch
- Rated operational current: 2500 A (AC-21A / AC-22A, up to 415 V)
- Number of poles: 3
- Switching configuration: Three-phase, 3-pole
- Operating positions: I-0-II
- Transition type: Open transition
- Operating method: Manual front operation
- Operating mechanism position: Between the poles
- Rated operational voltage: Up to 1000 V AC
- Rated short-time withstand current: 55 kA
- Operating handle: Black plastic pistol-type handle
- Handle protection rating: IP65
- Switch body protection rating: IP20
- Handle and shaft: Included
- Padlocking: Padlockable in OFF position
- Door interlocking: In positions I and II and when padlocked
- Mounting type: Base mounting
- Terminal arrangement: Top/bottom connection arrangement
- Dimensions (H × W × D): Approximately 377 × 538 × 335 mm
- Weight: Approximately 54.3 kg
- Applicable standards: IEC 60947-1, IEC 60947-3 and IEC 60947-6-1
- Switching technology: Mechanical manual changeover
Reliable Manual Power Source Changeover for Industrial Distribution Systems
Manual changeover switches such as the ABB OT2500E12CP allow electrical installations to select between two alternative power sources using a mechanically operated switching mechanism. In a typical mains and generator arrangement, position I connects the first source, position 0 disconnects both sources and position II connects the alternative source. The open-transition mechanism ensures that the original source is disconnected before the second source is connected.
The ABB OT2500E12CP is designed for high-current electrical distribution applications requiring dependable manual transfer operation. Its three-pole construction enables simultaneous switching of three phase conductors, while its interlocked I-0-II operating arrangement provides a defined sequence for source selection. The included pistol-type handle and shaft enable convenient operation from a compatible switchboard enclosure.
The switch can be incorporated into industrial switchboards, generator changeover panels and alternative power supply installations. As a manually operated changeover device, it requires an operator to perform the transfer and does not provide automatic mains failure detection or automatic transfer functionality. Appropriate upstream protection, conductor sizing and installation arrangements must be selected according to the electrical system requirements.
Typical Applications
- Manual mains-to-generator changeover in industrial electrical installations.
- High-current electrical distribution switchboards.
- Alternative power source selection for industrial facilities.
- Commercial building electrical distribution systems.
- Industrial manufacturing plants and production facilities.
- Manual transfer between two compatible three-phase supplies.
- Backup power distribution and generator connection panels.
- Industrial infrastructure and utility distribution assemblies.
- Power source selection in large electrical control installations.
- OEM switchgear assemblies and custom-built power distribution panels.
