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OTM125F3C20D400C ABB 125A Compact Automatic Transfer Switch
ABB OTM125F3C20D400C compact automatic transfer switch with 125 A rating, 3 pole open transition operation and motorised control for reliable power source transfer.
£830.25
Why Choose the ABB OTM125F3C20D400C Compact ATS?
The ABB OTM125F3C20D400C is a compact automatic transfer switch (ATS) designed for reliable automatic switching between two power sources in industrial, commercial and critical power applications. As part of the advanced ABB Compact ATS series, it provides motor-operated open transition transfer switching with fixed operating parameters for dependable power continuity. :chatgpt-content-reference{index="0"}
This automatic transfer switch combines a compact motor-operated switching mechanism with an integrated controller, enabling automatic transfer operation without requiring external control equipment. The unit features a self-powered design, direct mounted handle and DIN-rail or base mounting flexibility for straightforward installation in electrical systems. :chatgpt-content-reference{index="1"}
With a conventional thermal current rating of 125 A and a 3-pole configuration, the OTM125F3C20D400C is suitable for automatic transfer applications in low-voltage power distribution systems. Its open transition 1-0-2 switching sequence provides controlled transfer between normal and alternative supplies. :chatgpt-content-reference{index="2"}
Key Advantages
- Compact automatic transfer switch for reliable power source transfer.
- 125 A thermal current rating for low-voltage distribution applications.
- 3-pole switching configuration with switched simultaneous fourth pole function.
- Motor-operated design with integrated 20D controller.
- 380–415 V AC motor operational voltage for automatic operation.
- Flexible installation with base mounting or DIN-rail mounting capability. :chatgpt-content-reference{index="3"}
Key Features
- ABB Compact ATS series.
- OTM125F3C20D400C model.
- 125 A conventional free-air thermal current.
- 3-pole automatic transfer switch.
- Open transition 1-0-2 switching type.
- 20D controller type.
- 380–415 V AC motor supply.
- Self-supplied unit with fixed operating parameters.
- Direct mounted handle for manual operation.
- Supplies on top and load connections on bottom.
Reliable Automatic Power Transfer Control
Automatic transfer switches such as the ABB OTM125F3C20D400C provide a dependable method of transferring electrical loads between normal and alternative power supplies. They are commonly used where automatic source changeover and reliable electrical continuity are required.
The ABB Compact ATS range combines integrated control, motorised switching and compact construction to simplify installation in modern electrical distribution systems. Its fixed operating parameters provide straightforward configuration for automatic transfer applications. :chatgpt-content-reference{index="4"}
Typical Applications
- Automatic mains failure systems.
- Generator and utility power transfer.
- Commercial building power systems.
- Industrial distribution panels.
- Emergency power applications.
- Energy management and automation systems.
Technical Specifications
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| Mounting Type | DIN rail | |
|---|---|---|
| Device Type | Automatic transfer switch | |
| Operation | Automatic | |
| Series | Compact ATS | |
| Product type | Automatic transfer switch | |
| Rated thermal current | 125 A | |
| Number of poles | 3 poles | |
| Controller type | 20D | |
| Transition type | Open | |
| Switching sequence | 1-0-2 | |
| Motor operational voltage | 380–415 V AC | |
| Rated operational voltage | 380–415 V AC | |
| Rated insulation voltage | 800 V | |
| Rated impulse withstand voltage | 8 kV | |
| Rated short-time withstand current | 2.5 kA rms for 1 s | |
| Rated operational current AC-21A | 125 A at 380–415 V AC | |
| Rated operational current AC-22A | 125 A at 380–415 V AC | |
| Rated operational current AC-23A | 90 A at 380–415 V AC | |
| Rated operational power AC-23A | 45 kW at 380–415 V AC | |
| Mounting type | Base mounting or DIN-rail mounting | |
| Handle type | Direct mounted handle | |
| Fourth pole type | Switched - simultaneous function | |
| Protection rating | Front IP20 | |
| Terminal type | Screw terminals | |
| Pollution degree | 3 | |
| Power loss | 6.3 W per pole | |
| Dimensions (H × W × D) | approx. 103 × 233 × 131 mm | |
| Weight | approx. 1.75 kg |
Frequently Asked Questions
What is the ABB OTM125F3C20D400C used for?
The ABB OTM125F3C20D400C is an automatic transfer switch used to transfer electrical loads between two power sources automatically.
What is the current rating of this Compact ATS?
The OTM125F3C20D400C has a conventional free-air thermal current rating of 125 A.
How many poles does the ABB OTM125F3C20D400C have?
The ABB OTM125F3C20D400C is a 3-pole automatic transfer switch with a switched simultaneous fourth pole function.
What type of transfer operation does this ATS provide?
The OTM125F3C20D400C provides an open transition 1-0-2 transfer operation.
Where can this Compact ATS be installed?
The OTM125F3C20D400C can be installed using base mounting or DIN-rail mounting in suitable electrical distribution equipment.
Trusted by Electrical Engineers Worldwide
ABB Compact ATS automatic transfer switches are widely used by electrical professionals to provide reliable source transfer, automated control and dependable power continuity in modern installations.
