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abb Automatic transfer switch 1250 amps with 4 Poles
ABB OTM1250E4C3D230C automatic transfer switch with 1250 A rating, 4 pole switching and 230 V AC motor operation for industrial and critical power systems.
Why Choose the ABB OTM1250E4C3D230C Automatic Transfer Switch?
The ABB OTM1250E4C3D230C is a high-performance automatic transfer switch (ATS) designed for dependable power source changeover in industrial, commercial and critical power distribution systems. As part of the ABB OTM motorised change-over switch series, it provides reliable automatic switching between two power sources to support continuity of electrical supply.
This motorised change-over switch combines high current switching capability with automatic operation, making it suitable for generator backup systems, mains-to-mains transfer applications and large electrical distribution installations. The C3D configuration includes automatic operation with voltage sensing and a motor operator supply designed for professional power management systems.
With a rated current of 1250 A, a 4-pole configuration and a 230 V AC motor operator supply, the ABB OTM1250E4C3D230C is designed for high-capacity electrical installations requiring reliable automatic transfer performance.
Key Advantages
- Heavy-duty automatic transfer switch for critical power applications.
- 1250 A rated current capacity for large electrical systems.
- 4-pole switching for complete source changeover including neutral.
- Automatic motorised operation with integrated control functionality.
- Suitable for generator backup and dual power source systems.
- Designed for industrial switchboards and power distribution assemblies.
Key Features
- ABB OTM automatic transfer switch series.
- Model: OTM1250E4C3D230C.
- 1250 A rated operational current.
- 4-pole automatic change-over switching.
- 220–240 V AC motor operator supply.
- Automatic operation with voltage sensing capability.
- Open transition switching design.
- Manual emergency operation capability.
- Base-mounted installation for electrical switchboards.
Reliable Automatic Power Transfer for Critical Systems
Automatic transfer switches such as the ABB OTM1250E4C3D230C help maintain electrical supply by transferring loads between available power sources when required. This makes them essential components in systems where power continuity and operational reliability are critical.
The ABB OTM range is widely used by electrical engineers, panel builders and system integrators requiring robust switching performance, high current capability and dependable automatic source transfer.
Typical Applications
- Generator backup power systems.
- Industrial power distribution networks.
- Critical infrastructure installations.
- Manufacturing and processing facilities.
- Commercial electrical switchboards.
- Automatic mains changeover panels.
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 | OTM1250E4C3D230C | |
| Manufacturer part number | 1SCA112851R1001 | |
| Product type | Automatic change-over switch | |
| Rated operational current | 1250 A | |
| Number of poles | 4P | |
| 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 | |
| Frequency | 50 / 60 Hz | |
| Short-time withstand current | 50 kA for 1 s | |
| Rated operational power AC-23A | Up to 1200 kW at 690 V | |
| Mounting type | Base mounting | |
| Protection rating | IP20 | |
| Dimensions (H × W × D) | approx. 400 × 586 × 317 mm | |
| Weight | approx. 66 kg |
Frequently Asked Questions
What is the ABB OTM1250E4C3D230C used for?
The ABB OTM1250E4C3D230C is an automatic transfer switch used to transfer electrical loads between two power sources such as mains supplies and generators.
What current rating does this automatic transfer switch support?
The switch supports a rated operational current of 1250 A for high-power electrical installations.
How many poles does the ABB OTM1250E4C3D230C have?
The unit features a 4-pole configuration for complete source switching applications.
What motor supply voltage is required?
The motor operator requires a 220–240 V AC supply.
Where is this automatic transfer switch installed?
The ABB OTM1250E4C3D230C is typically installed in industrial switchboards, generator panels and commercial power distribution systems.
Trusted for Critical Power Applications
ABB OTM automatic transfer switches are used by electrical engineers and system integrators worldwide to provide reliable power source transfer and continuity for demanding installations.
