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abb Automatic transfer switch 250 amps with 4 Poles
ABB OTM250E4WC8D230C automatic transfer switch with 250 A rated current, 4-pole configuration, wide phase distance terminals and OMD800 controller designed for reliable power source changeover applications.
Why Choose the ABB OTM250E4WC8D230C Automatic Transfer Switch?
The ABB OTM250E4WC8D230C is a high-performance automatic transfer switch (ATS) designed for reliable automatic switching between two power sources in industrial, commercial and critical power applications. As part of the advanced ABB OTM motorised change-over switch series, it provides dependable source transfer operation to maintain electrical supply continuity during mains failures or power interruptions.
This automatic change-over switch combines a robust switching mechanism with an integrated motor operator and an OMD800 LCD controller with keypad for advanced automatic transfer management. The wide phase distance terminal arrangement improves installation flexibility by providing increased clearance between phases, making it suitable for demanding electrical distribution environments.
With a rated operational current of 250 A, a 4-pole configuration, wide phase distance terminals and a motor operator supply voltage of 220–240 V AC, the ABB OTM250E4WC8D230C is ideal for automatic mains-to-generator transfer systems, industrial switchboards and commercial backup power installations.
Key Advantages
- Reliable automatic transfer switching between two independent power sources.
- 250 A rated operational current for industrial and commercial installations.
- 4-pole switching configuration including neutral switching capability.
- Wide phase distance terminals simplify cable installation and improve electrical clearance.
- Integrated 220–240 V AC motor operator enables automatic source transfer.
- Integrated OMD800 LCD controller with keypad provides advanced monitoring and control.
Key Features
- ABB OTM motorised change-over switch series.
- 250 A rated operational current.
- 4-pole automatic transfer switching.
- 220–240 V AC motor operating voltage.
- OMD800 LCD controller with keypad.
- Integrated voltage sensing kit.
- Wide phase distance terminal arrangement.
- Open transition I-O-II switching operation.
- Manual emergency operating handle included.
Reliable Automatic Source Transfer for Critical Installations
Automatic transfer switches such as the ABB OTM250E4WC8D230C continuously monitor available power sources and automatically transfer electrical loads between primary and backup supplies when required. This helps minimise downtime while maintaining continuity for essential systems and infrastructure.
The ABB OTM range is designed for electrical engineers, panel builders and system integrators requiring dependable automatic switching solutions for industrial automation, generator installations and low-voltage power distribution systems. Its integrated motorised mechanism, voltage sensing functionality and OMD800 controller simplify installation while improving operational reliability.
Typical Applications
- Automatic mains and standby generator transfer systems.
- Industrial switchboards and power distribution panels.
- Commercial buildings and facilities.
- Backup power and emergency supply systems.
- Manufacturing and process control installations.
- Critical power continuity applications.
Technical Specifications
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| Mounting Type | Base mounting | |
|---|---|---|
| Device Type | Automatic transfer switch | |
| Operation | Automatic | |
| Poles | 4-pole | |
| Manufacturer | ABB | |
| Series | OTM Motorised Change-over Switches | |
| Model | OTM250E4WC8D230C | |
| Product type | Automatic transfer switch | |
| Rated operational current | 250 A | |
| Number of poles | 4 poles | |
| Motor operating voltage | 220–240 V AC | |
| Controller type | OMD800 LCD controller with keypad | |
| Rated insulation voltage | 1000 V | |
| Rated impulse withstand voltage | 12 kV | |
| Rated operational voltage | Up to 1000 V AC | |
| Frequency | 50 / 60 Hz | |
| Short-time withstand current | 8 kA for 1 second | |
| Rated operational power AC-23A | 75 kW at 230 V, 132 kW at 400 V, 160 kW at 500 V, 250 kW at 690 V | |
| Mounting type | Base mounting | |
| Protection rating | IP20 front protection | |
| Transition type | Open transition | |
| Terminal configuration | Wide phase distance | |
| Dimensions (H × W × D) | approx. 300 × 339 × 197 mm | |
| Weight | approx. 11 kg |
Frequently Asked Questions
What is the ABB OTM250E4WC8D230C used for?
This automatic transfer switch is used to automatically transfer electrical loads between mains and backup power supplies such as generators.
What current rating does this transfer switch support?
The switch supports a rated operational current of 250 A for industrial and commercial low-voltage systems.
What controller is included with the OTM250E4WC8D230C?
The switch includes an OMD800 LCD controller with keypad for automatic transfer management and monitoring.
Does the ABB OTM250E4WC8D230C include neutral switching?
Yes. The 4-pole configuration allows simultaneous switching of all conductors including the neutral connection.
What does the WC designation mean?
The WC version includes a wide phase distance terminal arrangement that improves cable routing and provides increased clearance between phases.
Trusted by Electrical Engineers Worldwide
ABB OTM automatic transfer switches are trusted worldwide for dependable source transfer performance, compact construction and reliable operation in critical power systems.
