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abb Automatic transfer switch 250 amps with 3 Poles
ABB OTM250E3C8D230C 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 OTM250E3C8D230C Automatic Transfer Switch?
The ABB OTM250E3C8D230C is a high-performance automatic transfer switch (ATS) designed for dependable 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 reliable motorised source transfer for installations where continuous electrical supply is essential.
This automatic change-over switch features I-O-II open transition operation, a three-pole configuration and an integrated OMD800 automatic controller with advanced transfer management functionality. It is supplied with voltage sensing capability, manual operating handle, PCB connectors and terminal hardware for straightforward installation.
With a rated operational current of 250 A, a 3-pole configuration and a 220–240 V AC motor operator supply, the OTM250E3C8D230C is suitable for automatic mains-to-generator transfer systems, industrial switchboards and critical low-voltage power distribution applications.
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.
- Motorised automatic source transfer operation.
- Open transition I-O-II change-over functionality.
- Integrated controller provides intelligent automatic transfer management.
Key Features
- ABB OTM automatic transfer switch series.
- 250 A rated operational current.
- Three-pole automatic change-over switching.
- 220–240 V AC motor operator voltage.
- Open transition I-O-II operation.
- OMD800 automatic controller.
- Voltage sensing kit included on the top of the switch.
- Manual operating handle included.
- PCB connectors and terminal hardware supplied.
- Top in - bottom out line terminal arrangement.
Reliable Automatic Power Transfer for Critical Systems
Automatic transfer switches monitor the availability of electrical supplies and automatically transfer loads between a primary source and a backup source when required. The ABB OTM series provides dependable switching performance for applications where power continuity is important.
The OTM250E3C8D230C combines robust switching capability, motorised operation and intelligent controller functionality, making it suitable for generator systems, industrial distribution panels and commercial power infrastructure.
Typical Applications
- Automatic mains failure (AMF) systems.
- Generator backup power installations.
- Industrial electrical distribution panels.
- Commercial buildings and facilities.
- Manufacturing and process control systems.
- Critical 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 Automatic Transfer Switches | |
| Model | OTM250E3C8D230C | |
| Product type | Automatic transfer switch | |
| Rated operational current | 250 A | |
| Number of poles | 3 | |
| Motor operator voltage | 220–240 V AC | |
| Controller type | OMD800 | |
| 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 current AC-21A / AC-22A | 250 A | |
| 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 | |
| Protection rating | Front IP20 | |
| Dimensions (H × W × D) | approx. 287 × 272 × 197 mm | |
| Weight | approx. 10 kg |
Frequently Asked Questions
What is the ABB OTM250E3C8D230C used for?
The ABB OTM250E3C8D230C is an automatic transfer switch used to transfer electrical loads between two power sources such as mains and generator supplies.
What current rating does this transfer switch support?
The switch supports a rated operational current of 250 A.
How many poles does the ABB OTM250E3C8D230C have?
The unit has a three-pole configuration suitable for three-phase switching applications.
What type of switching operation does this ATS provide?
The OTM250E3C8D230C provides automatic open transition I-O-II change-over operation.
What controller is included with this automatic transfer switch?
The unit includes an integrated OMD800 automatic transfer controller for advanced monitoring and control functions.
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.
