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abb Automatic transfer switch 250 amps with 3 Poles
ABB OTM250E3WC8D230C automatic transfer switch with 250 A rated current, three-pole switching and motorised open transition operation for reliable power source transfer.
Why Choose the ABB OTM250E3WC8D230C Automatic Transfer Switch?
The ABB OTM250E3WC8D230C is a high-performance automatic transfer switch (ATS) designed for reliable automatic switching between two electrical power sources in industrial, commercial and standby power applications. As part of the ABB OTM automatic transfer switch series, it provides dependable motorised source transfer where continuity of electrical supply is essential.
This automatic change-over switch features I-O-II open transition operation, a three-pole configuration, extended phase distance terminals and an integrated OMD800 automatic controller with LCD display and keypad. The unit includes voltage sensing functionality, a manual operating handle, PCB connectors and terminal hardware for straightforward installation.
With a rated operational current of 250 A, a 3-pole switching configuration and a 220–240 V AC motor operator supply, the OTM250E3WC8D230C is suitable for automatic mains-to-generator transfer systems, industrial switchboards and commercial backup power installations.
Key Advantages
- Reliable automatic transfer switch for critical power applications.
- 250 A rated operational current for industrial and commercial installations.
- 3-pole switching configuration for three-phase applications.
- Reliable motorised automatic source transfer operation.
- Integrated OMD800 LCD controller with keypad.
- Wide phase distance terminals simplify cable installation and routing.
Key Features
- ABB OTM motorised automatic transfer switch series.
- 250 A rated operational current.
- Three-pole automatic transfer switching.
- 220–240 V AC motor operating voltage.
- Open transition I-O-II operation.
- Integrated OMD800 LCD controller with keypad.
- Voltage sensing kit mounted on the switch.
- Wide phase distance terminal arrangement.
- Manual emergency operating handle included.
Reliable Automatic Source Transfer for Critical Installations
Automatic transfer switches monitor available power sources and automatically transfer electrical loads during mains failures or generator startup events. The ABB OTM series provides dependable switching performance for applications requiring improved power continuity.
The OTM250E3WC8D230C combines robust switching capability, motorised operation, voltage sensing and intelligent controller functionality, making it suitable for generator systems, industrial switchboards and low-voltage power distribution applications.
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.
- Low-voltage power continuity applications.
Technical Specifications
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| Mounting Type | Base mounting | |
|---|---|---|
| Device Type | Automatic transfer switch | |
| Operation | Automatic | |
| Coil / Supply Voltage | 220–240 V AC | |
| Poles | 3-pole | |
| Manufacturer | ABB | |
| Series | OTM Motorised Automatic Transfer Switches | |
| Model | OTM250E3WC8D230C | |
| Product type | Automatic transfer switch | |
| Rated operational current | 250 A | |
| Number of poles | 3 | |
| Motor operator voltage | 220–240 V AC | |
| Controller type | OMD800 LCD with keypad | |
| Rated operational voltage | Up to 1000 V AC | |
| Rated insulation voltage | 1000 V | |
| Rated impulse withstand voltage | 12 kV | |
| Rated short-time withstand current | 8 kA rms for 1 s | |
| Rated operational power AC-23A | 75 kW at 220–240 V, 140 kW at 400 V, 170 kW at 500 V, 250 kW at 690 V | |
| Rated frequency | 50 / 60 Hz | |
| Mounting type | Base mounting | |
| Transition type | Open transition | |
| Terminal configuration | Extended phase distance | |
| Position of line terminals | Top in - Bottom out | |
| Protection rating | Front IP20 | |
| Dimensions (H × W × D) | approx. 300 × 339 × 197 mm | |
| Weight | approx. 10 kg |
Frequently Asked Questions
What is the ABB OTM250E3WC8D230C 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.
How many poles does the ABB OTM250E3WC8D230C have?
The unit has a three-pole configuration designed for switching three-phase conductors.
What voltage powers the motor mechanism?
The motor-operated mechanism requires a 220–240 V AC supply.
What does the WC designation indicate?
The WC version includes an extended phase distance terminal arrangement that improves cable routing and installation flexibility.
Trusted for Reliable Power Switching
ABB OTM automatic transfer switches are widely used in critical electrical installations to provide dependable source transfer, improved power availability and reliable operation.
