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abb Automatic transfer switch 250 amps with 4 Poles
ABB OTM250E4C2D230C automatic transfer switch with 250 A rated current, four-pole switching and motorised open transition operation for reliable power source transfer.
Why Choose the ABB OTM250E4C2D230C Automatic Transfer Switch?
The ABB OTM250E4C2D230C is a robust automatic transfer switch (ATS) designed to provide 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 delivers dependable motorised source transfer for systems where continuous power availability is essential.
This automatic change-over switch features I-O-II open transition operation, a four-pole configuration and a motorised operating mechanism with a 220–240 V AC control supply. The unit includes voltage sensing capability on the top of the switch and is supplied with a manual operating handle, PCB connectors and terminal hardware for straightforward installation.
With a rated operational current of 250 A, 4-pole switching and reliable automatic transfer functionality, the OTM250E4C2D230C is suitable for 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.
- 4-pole switching configuration for three-phase plus neutral applications.
- Motorised automatic source transfer operation.
- Open transition I-O-II change-over functionality.
- Suitable for generator backup and emergency power systems.
Key Features
- ABB OTM automatic transfer switch series.
- 250 A rated operational current.
- Four-pole automatic change-over switching.
- 220–240 V AC motor operator voltage.
- Open transition I-O-II operation.
- 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 OTM250E4C2D230C combines robust switching capability, motorised operation and flexible installation options, making it suitable for generator systems, industrial switchboards and commercial power distribution applications.
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 | |
|---|---|---|
| Operation | Automatic | |
| Coil / Supply Voltage | 220–240 V AC | |
| Device Type | Automatic transfer switch | |
| Poles | 4-pole | |
| Manufacturer | ABB | |
| Series | OTM Automatic Transfer Switches | |
| Model | OTM250E4C2D230C | |
| Product type | Automatic transfer switch | |
| Rated operational current | 250 A | |
| Number of poles | 4 | |
| Motor operator voltage | 220–240 V AC | |
| 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-23A | 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 × 307 × 197 mm | |
| Weight | approx. 11 kg |
Frequently Asked Questions
What is the ABB OTM250E4C2D230C used for?
The ABB OTM250E4C2D230C 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 OTM250E4C2D230C have?
The unit has a four-pole configuration suitable for three-phase plus neutral switching applications.
What type of switching operation does this ATS provide?
The OTM250E4C2D230C provides automatic open transition I-O-II change-over operation.
What voltage is required for the motor operator?
The motor-operated mechanism requires a 220–240 V AC supply.
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.
