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OTM250E4WCM110V ABB 250A 4-Pole Motorised Changeover Switch
ABB OTM250E4WCM110V is a 250 A four-pole motorised open-transition changeover switch with a 110–125 V AC/DC motor operator, direct manual operation and extended phase distance for electrical power source transfer applications.
£2,268.81
Why Choose the ABB OTM250E4WCM110V Motorised Changeover Switch?
The ABB OTM250E4WCM110V is a robust 250 A four-pole motorised changeover switch designed for controlled transfer between two electrical power sources. As part of the ABB OT motorised changeover switch range, this model combines motorised operation, direct manual handling capability and an extended phase-distance design for integration into industrial and commercial electrical distribution systems.
The OTM250E4WCM110V provides open-transition changeover operation, ensuring that one source is disconnected before the alternative source is connected. The wide phase-distance configuration provides increased spacing between phases, while the integrated motor operator enables remote electrical switching and the supplied handle supports manual operation when required.
With a rated current of 250 A, a four-pole configuration and a motor operating voltage of 110–125 V AC/DC, the OTM250E4WCM110V is suitable for mains/generator changeover, standby power systems and alternative supply selection. Its four-pole arrangement enables simultaneous switching of four conductors in applications where this configuration is required.
Key Advantages
- Reliable 250 A motorised changeover switching for power distribution systems.
- Four-pole configuration for applications requiring four switched conductors.
- 110–125 V AC/DC motor operator for remote electrical operation.
- Open-transition switching disconnects one source before connecting the alternative supply.
- Wide phase-distance design provides extended spacing between phases.
- Direct manual operating capability for local switching when required.
- Designed for integration into switchboards, distribution panels and power-transfer systems.
Key Features
- ABB OT motorised changeover switch range.
- 250 A rated current.
- 4-pole switching configuration.
- 110–125 V AC/DC motor operating voltage.
- Open-transition changeover operation.
- Wide phase-distance construction.
- 170 kVA rated power at 400 V.
- 250 A AC-21A and AC-22A rated current at up to 415 V.
- 250 A AC-31B / AC-33B rated current at 415 V.
- 1000 V maximum rated operational voltage.
- 8 kA rated short-time withstand current.
- Supplied with a handle for manual operation and terminal connection hardware.
Reliable Motorised Power Source Changeover
Motorised changeover switches such as the ABB OTM250E4WCM110V provide a controlled method of transferring an electrical load between two independent power sources. Its open-transition arrangement disconnects the active source before connection to the alternative source, providing a defined break between supplies during the transfer process.
The OTM250E4WCM110V combines remote motorised operation with direct manual control and a wide phase-distance construction. This makes it suitable for switchboard applications requiring dependable four-pole source selection, extended phase spacing and integration with external transfer or power-management control systems.
Typical Applications
- Mains and generator power source changeover systems.
- Standby and emergency power distribution.
- Industrial electrical switchboards.
- Commercial building power distribution systems.
- Alternative supply selection systems.
- Four-pole installations requiring extended phase distance.
Technical Specifications
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| Operation | Motorised | |
|---|---|---|
| Device Type | Motorised changeover switch | |
| Series | OT Motorised Changeover Switches | |
| ABB product ID | 1SCA022846R8170 | |
| Product type | Motorised changeover switch | |
| Rated current | 250 A | |
| Number of poles | 4 | |
| Motor operating voltage | 110–125 V AC/DC | |
| Transition type | Open transition | |
| Phase spacing | Wide / extended phase distance | |
| Rated current AC-21A / AC-22A at ≤415 V | 250 A | |
| Rated current AC-31B / AC-33B at 415 V | 250 A | |
| Rated power at 400 V | 170 kVA | |
| Maximum rated operational voltage | 1000 V AC | |
| Rated short-time withstand current | 8 kA | |
| Operating method | Motorised with direct manual operation | |
| Manual operation | Handle supplied | |
| Approximate weight | 7.9 kg |
Frequently Asked Questions
What is the ABB OTM250E4WCM110V used for?
The ABB OTM250E4WCM110V is used for motorised changeover between two electrical power sources in industrial, commercial and standby power distribution systems.
What is the rated current of the OTM250E4WCM110V?
The OTM250E4WCM110V has a rated current of 250 A.
How many poles does the ABB OTM250E4WCM110V have?
This model has a four-pole configuration, enabling four conductors to be switched as part of the changeover arrangement.
What motor operating voltage does the OTM250E4WCM110V use?
The motor operator is designed for a 110–125 V AC/DC supply.
What does the wide phase-distance design of the OTM250E4WCM110V mean?
The W designation identifies an ABB OTM160–250E configuration with extended phase distance, providing increased spacing between the switch phases.
Is the OTM250E4WCM110V an open-transition changeover switch?
Yes. The OTM250E4WCM110V provides open-transition switching, disconnecting the active source before the alternative source is connected.
Trusted by Electrical Distribution Professionals Worldwide
ABB OT motorised changeover switches are designed for dependable power source transfer, combining robust switching performance, motorised operation and manual control capability for industrial and commercial electrical distribution systems.
