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OXA200U3O3QT ABB TruONE 250 A IEC 4-Pole Automatic Transfer Switch Level 3 Overlapping Neutral
ABB OXA200U3O3QT is a 250 A IEC and 200 A UL 4-pole TruONE automatic transfer switch with a Level 3 LCD controller, open-transition operation, overlapping neutral, top source connections and bottom load connections.
£6,139.76
Why Choose the ABB OXA200U3O3QT TruONE Automatic Transfer Switch?
The ABB OXA200U3O3QT is a 250 A IEC, 4-pole TruONE automatic transfer switch (ATS) designed for automatic transfer of electrical loads between two power sources. Part of ABB's TruONE ATS range, it integrates the transfer switching mechanism and controller into a single purpose-built assembly for critical, standby and industrial power distribution systems.
This model features a Level 3 controller with LCD interface, open-transition I-II operation and an overlapping neutral. The overlapping neutral arrangement maintains the neutral connection to the load during the transfer sequence, supporting installations where continuity of the neutral conductor during source changeover is required.
The OXA200U3O3QT has a 200 A UL rating and 250 A IEC rating with a 4-pole configuration. It uses a top-entry arrangement, with Source 1 and Source 2 connections at the top and the load connections at the bottom, providing the specified source-top/load-bottom configuration for compatible switchboards.
Key Advantages
- 250 A IEC rated automatic transfer switch for critical and standby power systems.
- 200 A UL rated current for UL-based applications.
- 4-pole configuration with overlapping neutral functionality.
- Integrated Level 3 controller with LCD interface for automatic transfer control and monitoring.
- Open-transition I-II operation for controlled transfer between two sources.
- Overlapping neutral maintains neutral continuity during the transfer sequence.
- Top source connections and bottom load connections suit the specified switchboard arrangement.
Key Features
- ABB TruONE ATS series.
- 250 A IEC rated current.
- 200 A UL rated current.
- 4-pole automatic transfer switch.
- Level 3 controller with LCD interface.
- Open-transition I-II operation.
- Overlapping neutral configuration.
- Source 1 and Source 2 connections at the top.
- Load connections at the bottom.
- Wide operating voltage capability for industrial and commercial power systems.
- Integrated switch and controller architecture reduces separate wiring and connection points.
- Open-style ATS construction for integration into electrical switchboards.
Integrated Automatic Transfer with Overlapping Neutral
The ABB TruONE platform combines the transfer switching mechanism, sensing and automatic control functions into an integrated ATS assembly. This architecture reduces the number of separate components and electrical connections required in conventional automatic transfer systems while supporting dependable transfer between normal and alternative power sources.
The OXA200U3O3QT combines open-transition operation with an overlapping neutral and a Level 3 controller. Its 4-pole design, 250 A IEC rating and top-source/bottom-load connection arrangement make it suitable for commercial, infrastructure and industrial installations requiring automatic source transfer while maintaining neutral continuity during the transfer sequence.
Typical Applications
- Automatic mains-to-generator transfer systems.
- Critical and standby power distribution systems.
- Commercial and industrial electrical switchboards.
- Emergency and alternative power supply systems.
- Building services and infrastructure power distribution.
- Industrial installations requiring automatic source transfer with overlapping neutral.
Technical Specifications
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| Operation | Automatic | |
|---|---|---|
| Device Type | Automatic transfer switch | |
| Series | TruONE ATS | |
| ABB order code | 1SCA152430R1001 | |
| Product group | OT Change over Switches | |
| Product type | Automatic transfer switch | |
| Rated current (IEC) | 250 A | |
| Rated current (UL) | 200 A | |
| Number of poles | 4 | |
| Controller | Level 3 | |
| Controller interface | LCD | |
| Transition type | Open transition | |
| Operating sequence | I-II | |
| Neutral configuration | Overlapping neutral | |
| Source connection position | Top | |
| Load connection position | Bottom | |
| Operating voltage range | 200–480 V AC | |
| Rated insulation voltage | 1000 V | |
| Rated impulse withstand voltage | 8 kV | |
| Standards | UL 1008 / IEC 60947-6-1 | |
| Weight | approx. 15.77 kg |
Frequently Asked Questions
What is the ABB OXA200U3O3QT used for?
The ABB OXA200U3O3QT is a 4-pole TruONE automatic transfer switch designed to transfer electrical loads automatically between two power sources in critical, standby and industrial power systems.
What is the current rating of the OXA200U3O3QT?
The OXA200U3O3QT has a rated current of 250 A under IEC ratings and 200 A under UL ratings.
What does overlapping neutral mean on the OXA200U3O3QT?
The overlapping neutral arrangement maintains the neutral connection to the load during source transfer, making it suitable for systems where neutral continuity during changeover is required.
Where are the source and load connections on the OXA200U3O3QT?
The OXA200U3O3QT uses a top-entry configuration, with Source 1 and Source 2 connections at the top and the load connections at the bottom.
Which controller is fitted to the ABB OXA200U3O3QT?
The OXA200U3O3QT is equipped with a Level 3 controller with LCD interface for automatic transfer control, monitoring and configuration.
Trusted by Critical Power Professionals Worldwide
ABB TruONE automatic transfer switches integrate switching and control functions into a purpose-built ATS platform, helping electrical engineers, panel builders and system integrators implement dependable automatic power-source transfer in commercial, infrastructure and industrial electrical systems.
