ABB OTM800E4C3D230C automatic change-over switch, an 800 A 4-pole motor-operated transfer switch with OMD300 controller designed for industrial and commercial backup power transfer systems.
£9,287.12
The ABB OTM800E4C3D230C is a heavy-duty automatic change-over switch designed for reliable transfer between utility and standby power supplies in demanding industrial and commercial applications. As part of the advanced ABB OTM motorised transfer switch range, it delivers dependable automatic source switching for installations where uninterrupted electrical continuity is critical.
This motor-operated transfer switch combines ABB’s proven switch-disconnector technology with integrated automatic transfer functionality, enabling secure switching between mains and generator supplies during supply interruptions, maintenance procedures or emergency conditions. Its robust construction ensures reliable long-term performance in harsh electrical environments.
With a rated operational current of 800 A, a 4-pole configuration, and a 230 V AC motor operating voltage, the OTM800E4C3D230C is ideal for industrial switchboards, commercial buildings, data centres and backup power systems requiring safe and efficient automatic transfer performance. Its open transition design ensures dependable separation between asynchronous power sources.
Automatic change-over switches such as the ABB OTM800E4C3D230C are designed to maintain uninterrupted electrical supply by automatically transferring loads between utility mains and standby power sources during outages or planned maintenance operations.
The ABB OTM range is trusted by electrical engineers, industrial operators and panel builders because of its dependable switching performance, robust construction and integrated motor-operated transfer mechanism. The open transition design ensures safe isolation between separate power supplies during transfer operations.
| Power | 450 kW |
|---|---|
| Current | 800 A |
| Phase | Three Phase |
| IP Rating | IP00 |
| Series | OTM Automatic Change-Over Switches |
| Product type | Automatic change-over switch |
| Rated operational current | 800 A |
| Number of poles | 4 |
| Rated operational voltage | 1000 V AC |
| Motor operating voltage | 230 V AC |
| Transition type | Open transition |
| Rated insulation voltage | 1000 V |
| Rated impulse withstand voltage | 12 kV |
| Rated short-time withstand current | 20 kA for 1 second |
| Rated operational power AC-23A | 450 kW at 400 V AC |
| Operating mechanism | Mechanism at the end of the switch |
| Position of line terminals | Top in - Bottom out |
| Mounting type | Base mounting |
| Protection rating | IP00 front protection |
| Pollution degree | 3 |
| Power loss | approx. 40 W |
| Dimensions (W × H × D) | approx. 476 × 357 × 299 mm |
| Weight | approx. 37 kg |
| Standards | IEC 60947-3 |
This automatic change-over switch transfers electrical loads between mains and standby power supplies such as generator systems.
The switch is rated for 800 A operation in industrial and commercial power distribution systems.
The OTM800E4C3D230C uses an open transition switching method for automatic source transfer.
Yes, the unit includes integrated automatic transfer functionality with an OMD300 controller system.
The switch is commonly installed in industrial switchboards, generator transfer panels and critical backup power systems.
ABB OTM automatic transfer switches are trusted by industrial engineers and electrical contractors for dependable automatic source transfer, robust construction and long-term operational reliability.
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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...