Why Choose the ABB OTM2000E4CM230C 2000A Motorised Changeover Switch?
The ABB OTM2000E4CM230C (ABB product ID 1SCA112712R1001) is a heavy-duty 2000 A, 4-pole motorised changeover switch designed for reliable power source selection in industrial and commercial low-voltage electrical distribution systems. As part of the ABB OTM2000_CM motorised changeover switch series, it provides controlled switching between two independent electrical supplies, making it suitable for high-current mains and generator changeover installations, industrial switchgear and critical power distribution applications.
The OTM2000E4CM230C features a 220–240 V AC motor operating supply and a four-pole I-0-II switching arrangement. Its open-transition mechanism disconnects the existing supply before connecting the alternative source, providing break-before-make operation that prevents intentional paralleling of the two supplies during changeover. The motorised mechanism enables remote electrical operation through a compatible control system.
With a 2000 A rated operational current, 1000 V rated insulation voltage and 55 kA short-time withstand current for 1 s, the ABB OTM2000E4CM230C is engineered for demanding high-current electrical installations. Its robust base-mounted construction, included manual operating handle and comprehensive terminal connection accessories support dependable integration into industrial distribution boards and transfer switching assemblies.
Key Advantages
- Heavy-duty 2000 A motorised changeover switching for industrial power distribution.
- 4-pole construction enables simultaneous switching of four electrical conductors.
- I-0-II operating positions provide selection between two power sources and a central OFF position.
- 220–240 V AC motor operating voltage supports remote electrical switching.
- Open-transition, break-before-make operation keeps independent power sources separated during transfer.
- 55 kA short-time withstand current for 1 s supports demanding high-current installations.
- 1000 V rated insulation voltage provides robust electrical insulation performance.
- 12 kV rated impulse withstand voltage supports industrial electrical insulation coordination.
- Supplied with a manual operating handle for local operation when required.
- Includes terminal bolt kits, control circuit connectors, handle storage clip and spare fuses.
- Suitable for mains and generator changeover systems with appropriate external control equipment.
- Robust base-mounted construction for integration into industrial switchgear and electrical distribution enclosures.
Key Features
- ABB OTM2000_CM motorised changeover switch series.
- 2000 A rated operational current.
- 4-pole switching configuration.
- I-0-II source selection.
- Open-transition switching mechanism.
- 220–240 V AC motor operating supply.
- 2000 A AC-21B operational current rating at 380–415 V AC.
- 2000 A AC-21B operational current rating at 500 V AC.
- 1350 kVA rated power at 400 V AC.
- 1000 V rated operational voltage.
- 1000 V rated insulation voltage.
- 12 kV rated impulse withstand voltage.
- 55 kA rated short-time withstand current for 1 s.
- 2000 A conventional free-air thermal current at 40 °C.
- 55 W power loss.
- Integrated motor operating mechanism for electrically controlled changeover.
- Front-operated mechanism with manual operating facility.
- Black manual operating handle included.
- M12 × 60 terminal bolt kit with nuts and washers.
- Male connectors supplied for control circuit connections.
- Handle storage clip and spare fuses included.
- IP20 front protection rating.
- Base mounting for switchgear installation.
Technical Specifications
- Manufacturer: ABB
- Series: OTM2000_CM Motorised Changeover Switches
- Model: OTM2000E4CM230C
- ABB order code: OTM2000E4CM230C
- ABB product ID: 1SCA112712R1001
- Product group: OT Change over Switches
- Product type: Motorised changeover switch
- Rated operational current (Ie): 2000 A
- Number of poles: 4
- Switching positions: I-0-II
- Transition type: Open transition
- Motor operating voltage: 220–240 V AC
- Rated operational voltage: 1000 V
- Rated operational current AC-21B at 380–415 V AC: 2000 A
- Rated operational current AC-21B at 500 V AC: 2000 A
- Rated power at 400 V AC: 1350 kVA
- Conventional free-air thermal current (Ith): 2000 A at 40 °C
- Rated insulation voltage (Ui): 1000 V
- Rated impulse withstand voltage (Uimp): 12 kV
- Rated short-time withstand current (Icw): 55 kA RMS for 1 s
- Power loss: 55 W
- Operating mechanism: Motorised, with manual operating facility
- Operating mode: Front operated
- Mechanism location: End of switch
- Manual operating handle: Included
- Handle colour: Black
- Handle reference: OTV1000ECMK
- Terminal bolt kit: M12 × 60
- Terminal arrangement: Top-in/bottom-out or bottom-in/top-out
- Phase spacing: Standard
- Mounting type: Base mounting
- Protection rating: IP20 front
- Pollution degree: 3
- Product dimensions (W × H × D): 771 × 377 × 372 mm
- Net weight: 95 kg
- Included accessories: Manual handle, terminal bolt kit, control circuit connectors, handle storage clip and spare fuses
- Country of origin: Finland
- GTIN / EAN: 6417019454085
- Product classification: Low-voltage switch-disconnector / changeover switch
Reliable High-Current Power Source Changeover for Industrial Electrical Systems
Motorised changeover switches such as the ABB OTM2000E4CM230C provide controlled switching between two independent electrical power sources. In a typical mains and standby generator installation, the switch allows an electrical load to be connected to either supply while maintaining separation between the sources. The I-0-II switching arrangement provides three defined positions: source I connected, both sources disconnected and source II connected.
The open-transition switching mechanism follows a break-before-make sequence. During transfer, the active supply is disconnected before the alternative supply is connected. This prevents intentional simultaneous connection of independent sources and provides a controlled transfer arrangement for electrical installations where supply separation is essential.
The OTM2000E4CM230C uses an integrated 220–240 V AC motor operator to perform electrically controlled changeover operations. When connected to a suitable external transfer controller, the switch can form part of an automatic mains failure or standby generator transfer system. The external controller provides supply monitoring and transfer commands, while the motorised switch performs the physical power circuit changeover.
Its four-pole construction enables the simultaneous transfer of four conductors, making it suitable for three-phase electrical installations where a switched neutral is required by the system design. The substantial current rating, high short-time withstand capability and robust mechanical assembly make the OTM2000E4CM230C suitable for large industrial distribution systems. The supplied manual handle provides a local operating facility, while the terminal bolt kit and control connectors simplify integration into purpose-built switchgear.
Typical Applications
- High-current mains and standby generator changeover systems.
- Industrial power distribution boards and switchgear assemblies.
- Automatic transfer switching systems with external controllers.
- Large commercial and industrial electrical installations.
- Manufacturing plants and production facilities.
- Critical infrastructure electrical distribution systems.
- Data centre power distribution and source selection.
- Hospital and healthcare facility electrical infrastructure.
- Industrial generator installations and standby power systems.
- Large building services electrical distribution.
- Four-pole source switching in three-phase electrical systems.
- OEM switchboard manufacturing and high-current transfer panel assembly.
