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abb Automatic transfer switch 250 amps with 4 Poles
ABB OTM250E4C3D230C automatic transfer switch with 250 A rated current and 4-pole configuration designed for reliable power source changeover applications.
Why Choose the ABB OTM250E4C3D230C Automatic Transfer Switch?
The ABB OTM250E4C3D230C is a high-performance automatic transfer switch (ATS) designed for reliable switching between two power sources in industrial, commercial and critical power applications. As part of the advanced ABB OTM automatic transfer switch series, it provides automatic changeover functionality to help maintain continuous power availability during supply interruptions.
This automatic change-over switch combines a robust switching mechanism with an integrated motor operator and dual power source capability, allowing automatic operation between mains and backup supplies. The compact design enables straightforward integration into electrical distribution systems where reliable power transfer is essential.
With a rated current of 250 A, a 4-pole configuration and a motor operator supply voltage of 220–240 V AC, the ABB OTM250E4C3D230C is suitable for automatic transfer applications in commercial buildings, industrial facilities, generators and emergency power systems.
Key Advantages
- Reliable automatic transfer switching between two power sources.
- 250 A rated current capacity for demanding electrical distribution applications.
- 4-pole switching design suitable for systems requiring neutral switching.
- Integrated motor operator with 220–240 V AC operating voltage.
- Fast and dependable changeover operation improves power continuity.
- Suitable for industrial, commercial and critical backup power systems.
Key Features
- ABB OTM automatic transfer switch series.
- 250 A rated operational current.
- 4-pole change-over switch configuration.
- Automatic I-O-II operation.
- 220–240 V AC motor operator supply.
- Integrated dual power source capability.
- Open transition switching operation.
- Suitable for generator and emergency power applications.
Reliable Power Transfer for Critical Electrical Systems
Automatic transfer switches such as the ABB OTM250E4C3D230C monitor available power sources and automatically transfer electrical loads between primary and backup supplies when required. This helps maintain continuous operation and reduces disruption caused by mains failures.
The ABB OTM series is designed for engineers and system integrators requiring dependable automatic switching solutions for industrial automation, commercial buildings and standby power installations. Its compact construction, high switching performance and integrated motor operation simplify modern electrical distribution designs.
Typical Applications
- Emergency generator changeover systems.
- Industrial power distribution panels.
- Commercial buildings and facilities.
- Data centres and critical infrastructure.
- Backup power and UPS systems.
- Automatic mains failure (AMF) applications.
Technical Specifications
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| Mounting Type | Panel / door | |
|---|---|---|
| Device Type | Automatic transfer switch | |
| Operation | Automatic | |
| Coil / Supply Voltage | 220–240 V AC | |
| Poles | 4-pole | |
| Manufacturer | ABB | |
| Series | OTM Automatic Transfer Switches | |
| Model | OTM250E4C3D230C | |
| Product type | Automatic transfer switch | |
| Rated current | 250 A | |
| Number of poles | 4 poles | |
| Motor operator voltage | 220–240 V AC | |
| Rated insulation voltage | 1000 V | |
| Rated impulse withstand voltage | 12 kV | |
| Rated operational voltage | Up to 1000 V | |
| AC-23A operational power | Up to 250 kW at 690 V | |
| Short-time withstand current | 8 kA for 1 s | |
| Mounting type | Panel mounting | |
| Weight | approx. 11 kg |
Frequently Asked Questions
What is the ABB OTM250E4C3D230C used for?
The ABB OTM250E4C3D230C is used for automatic switching between two power sources to maintain electrical supply continuity during power interruptions.
What current rating does the OTM250E4C3D230C support?
The switch supports a rated current of 250 A for industrial and commercial power transfer applications.
How many poles does this automatic transfer switch have?
The ABB OTM250E4C3D230C features a 4-pole switching configuration.
What motor operator voltage is required?
The automatic transfer switch uses a 220–240 V AC motor operator supply.
Where is this transfer switch typically installed?
The OTM250E4C3D230C is typically installed in electrical distribution panels for generator, standby power and critical power applications.
Trusted by Electrical Engineers Worldwide
ABB OTM automatic transfer switches are widely used in industrial and commercial power systems to provide reliable source transfer, improved power availability and dependable operation in critical electrical installations.
