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OTM250E3WCM230C ABB 250 A 3-Pole Motorised Changeover Switch 230 V AC
ABB OTM250E3WCM230C is a 250 A 3-pole motorised open-transition changeover switch with 230 V AC operation and extended phase distance for industrial and commercial three-phase power transfer applications.
£1,160.86
Why Choose the ABB OTM250E3WCM230C Motorised Changeover Switch?
The ABB OTM250E3WCM230C is a robust motorised changeover switch designed for reliable transfer between alternative electrical power sources in industrial and commercial low-voltage distribution systems. As part of the ABB OT motorised changeover switch range, it combines a 250 A current rating with electrically operated source changeover and an extended phase-distance configuration.
This three-pole switch provides open-transition I-0-II changeover operation, disconnecting one source before connecting the alternative supply. Its integrated motor operator enables remote electrical switching, while the supplied manual operating handle provides local control when required.
With a rated current of 250 A, a 3-pole configuration and a 220–240 V AC motor operating voltage, the OTM250E3WCM230C is suitable for mains and standby power systems, generator changeover arrangements and industrial distribution switchboards. The W version features extended phase distance, providing additional spacing between the main circuit connections.
Key Advantages
- Robust motorised changeover switch for three-phase power distribution.
- 250 A rated current for industrial and commercial installations.
- 3-pole configuration for three-phase source changeover.
- 220–240 V AC motor operating voltage for remote electrical operation.
- Open-transition I-0-II switching provides a defined OFF position between sources.
- Extended phase distance distinguishes the W configuration for increased terminal spacing.
- Manual operating handle and terminal hardware supplied for practical switchboard integration.
Key Features
- ABB OT motorised changeover switch range.
- 250 A rated current.
- 3-pole switching configuration.
- 220–240 V AC motor operating voltage.
- 170 kVA rated power at 400 V.
- 250 / 250 A AC-31B / AC-33B rating at 415 V.
- 140 kW AC-23A rated operational power at 400 V.
- 1000 V rated operational and insulation voltage.
- 12 kV rated impulse withstand voltage.
- 8 kA short-time withstand current for 1 s.
Reliable Motorised Power Changeover
Motorised changeover switches allow electrical loads to be transferred between alternative power sources through electrical control rather than requiring routine manual switching at the switchboard. The ABB OTM250E3WCM230C combines an integrated motor drive with open-transition I-0-II switching for controlled source selection in three-phase low-voltage distribution systems.
The W configuration incorporates extended phase distance, while the switch is supplied with a handle for manual operation, a bolt kit with nuts and washers for the terminals and male connectors for the control circuits. These features support straightforward integration into power distribution and source-transfer assemblies.
Typical Applications
- Main and standby power supply changeover systems.
- Generator and mains supply switching installations.
- Industrial low-voltage distribution switchboards.
- Commercial building electrical distribution systems.
- Manufacturing and process plant power systems.
- Remote source-selection and transfer systems.
- Three-phase installations benefiting from extended phase spacing.
Technical Specifications
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| Operation | Motorised | |
|---|---|---|
| Device Type | Motorised changeover switch | |
| Series | OT Motorised Changeover Switches | |
| ABB product ID | 1SCA022846R4770 | |
| Product type | Motorised changeover switch | |
| Rated current | 250 A | |
| Number of poles | 3 | |
| Motor operating voltage | 220–240 V AC | |
| Nominal motor voltage | 230 V AC | |
| Switching positions | I-0-II | |
| Transition type | Open transition | |
| Rated power at 400 V | 170 kVA | |
| Rated current AC-31B / AC-33B at 415 V | 250 / 250 A | |
| Rated operational power AC-23A at 400 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 | |
| Phase spacing | Extended phase distance | |
| Manual operating handle | OTV250ECMK | |
| Terminal bolt kit | M8 × 25 mm | |
| Dimensions (W × H × D) | 296 × 170 × 197 mm | |
| Weight | approx. 6.9 kg |
Frequently Asked Questions
What is the ABB OTM250E3WCM230C used for?
The OTM250E3WCM230C is a motorised changeover switch used to transfer three-phase electrical loads between alternative power sources in industrial and commercial low-voltage distribution systems.
What is the current rating of the OTM250E3WCM230C?
The ABB OTM250E3WCM230C has a rated current of 250 A.
How many poles does the OTM250E3WCM230C have?
The OTM250E3WCM230C has a 3-pole configuration designed for three-phase source changeover applications.
What motor operating voltage does the OTM250E3WCM230C use?
The integrated motor operator is designed for a 220–240 V AC supply, with a nominal operating voltage of 230 V AC.
What is different about the W version of the OTM250E3WCM230C?
The W version is equipped with extended phase distance, providing increased spacing between the main circuit phase connections.
Trusted ABB Power Switching Technology
ABB OT motorised changeover switches are engineered for dependable source transfer in industrial and commercial electrical distribution systems, combining robust switching performance with motorised control and practical manual operating capability.
