ABB OTM1250E3C8D230C automatic transfer switch with 1250A rating, 3-pole switching, integrated OMD800 controller and 230V motor operation for industrial standby power systems.
£7,942.66
The ABB OTM1250E3C8D230C is a high-capacity automatic transfer switch (ATS) engineered for dependable automatic switching between two electrical power sources in industrial, commercial and mission-critical infrastructure applications. As part of the advanced ABB OTM_C automatic transfer switch range, this motor-operated switch provides reliable standby power transfer for generator systems, emergency backup installations and high-current power distribution networks.
Featuring a 1250A operational current rating, 3-pole switching configuration and integrated OMD800 automatic transfer switch controller with LCD keypad, the OTM1250E3C8D230C is designed for demanding electrical systems requiring intelligent monitoring, dependable transfer logic and robust high-current switching capability. The integrated voltage sensing arrangement ensures accurate source supervision and secure automatic transfer operation during mains failure conditions.
Designed with an open transition I-0-II switching mechanism and powered by a 230V AC motor operating system, the ABB OTM1250E3C8D230C automatically transfers loads between utility and standby supplies while helping maintain continuity for critical industrial processes and infrastructure systems. Its industrial-grade construction and strong short-circuit withstand capability make it ideal for large electrical installations, data centres and critical power applications.
Automatic transfer switches such as the ABB OTM1250E3C8D230C continuously monitor electrical supply sources and automatically transfer loads between primary and standby power supplies during mains failure conditions. This ensures uninterrupted operation of critical systems while helping protect industrial processes, server infrastructure and essential electrical equipment from downtime.
The ABB OTM_C transfer switch range is engineered for demanding industrial environments requiring dependable high-current switching, strong short-circuit performance and intelligent automatic source management. Its integrated OMD800 controller with LCD interface simplifies commissioning and enables advanced transfer functionality for generator systems and dual-supply power networks.
| Current | 1250 A |
|---|---|
| Phase | Three Phase |
| IP Rating | IP20 |
| Series | OTM_C Automatic Transfer Switches |
| Product type | Automatic transfer switch |
| Operational current AC-21A | 1250A |
| Operational current AC-22A | 1250A |
| Operational current AC-23A | 1250A |
| Number of poles | 3P |
| Motor operating voltage | 230V AC |
| Rated operational voltage | Up to 1000V |
| Rated insulation voltage (Ui) | 1000V |
| Rated impulse withstand voltage (Uimp) | 12kV |
| Short-time withstand current | 50kA for 1 second |
| Transition type | Open transition I-0-II |
| Controller type | OMD800 with LCD keypad |
| Operating mechanism | Motor-operated |
| Mounting type | Panel mounting |
| Protection rating | Front IP20 |
| Terminal type | Screw terminals |
| Dimensions (W × H × D) | approx. 587 × 400 × 317 mm |
| Weight | approx. 66 kg |
| Standards | IEC 60947-3 |
The OTM1250E3C8D230C is used to automatically transfer electrical loads between two power sources, such as utility mains and standby generators.
The switch supports a 1250A operational current rating for high-power industrial and commercial applications.
The unit includes an integrated ABB OMD800 automatic transfer switch controller with LCD keypad for intelligent source monitoring and transfer management.
The device uses a 3-pole open transition I-0-II switching mechanism with motor-operated automatic transfer functionality.
The switch is suitable for industrial plants, data centres, standby generator systems, hospitals and high-current power continuity applications.
ABB OTM automatic transfer switches are trusted by electrical engineers and power system integrators for reliable automatic source transfer, robust high-current performance and dependable standby power continuity.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...