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OXA400U3O3QT ABB TruONE 400 A 4-Pole Automatic Transfer Switch Level 3 Overlapping Neutral
ABB OXA400U3O3QT is a 400 A TruONE automatic transfer switch with Level 3 LCD controller, open-transition operation, 4-pole configuration and overlapping neutral for automatic power transfer applications.
£8,253.86
Why Choose the ABB OXA400U3O3QT TruONE Automatic Transfer Switch?
The ABB OXA400U3O3QT is a 400 A TruONE automatic transfer switch (ATS) designed for dependable automatic transfer of electrical loads between two power sources. Part of the ABB TruONE ATS range, it combines the transfer switch mechanism and controller into one integrated unit to simplify installation, improve reliability and support critical power applications.
This model features an integrated Level 3 controller with LCD interface, open-transition I-II operation and an overlapping neutral arrangement. The TruONE platform uses a self-contained design that reduces the number of secondary connections required while providing advanced monitoring and control functionality.
The OXA400U3O3QT is a 400 A, 4-pole automatic transfer switch with the fourth pole configured as a switched overlapping neutral. It uses a supplies-on-top and load-on-bottom connection arrangement, making it suitable for compatible electrical switchboards and automatic power transfer systems. :chatgpt-content-reference{index="0"}
Key Advantages
- 400 A TruONE automatic transfer switch for critical power and standby applications.
- Integrated Level 3 controller with LCD interface.
- Open-transition I-II operation for controlled transfer between two sources.
- Overlapping neutral maintains neutral continuity during transfer.
- All-in-one ATS design reduces wiring, installation time and connection points.
- Wide operating voltage range of 200–480 V AC supports flexible system integration. :chatgpt-content-reference{index="1"}
- Designed to comply with UL 1008 and IEC 60947-6-1 requirements. :chatgpt-content-reference{index="2"}
Key Features
- ABB TruONE ATS series.
- 400 A conventional free-air thermal current (Ith).
- 4-pole configuration.
- Level 3 controller (LCD).
- Open style ATS construction.
- Open-transition type I-II operation.
- Overlapping neutral fourth pole.
- Fourth pole positioned on the right side.
- Supplies on top and load on bottom terminal arrangement.
- Detachable HMI for convenient operation and commissioning.
- Compatible with ABB TruONE communication and accessory modules.
Integrated Automatic Transfer for Reliable Power Systems
Automatic transfer switches monitor available power sources and transfer connected loads when required. The ABB TruONE design integrates the switching mechanism and controller into a single ATS assembly, reducing installation complexity and helping improve reliability in critical power systems.
The OXA400U3O3QT combines open-transition switching with a Level 3 controller and overlapping neutral operation. Its switched fourth pole provides neutral management during source transfer, while the integrated design supports easier commissioning, monitoring and maintenance of automatic transfer installations. :chatgpt-content-reference{index="3"}
Typical Applications
- Automatic mains-to-generator transfer systems.
- Critical power distribution installations.
- Commercial and industrial switchboards.
- Emergency power supply systems.
- Infrastructure and building power applications.
- Industrial facilities requiring dependable automatic source transfer.
Technical Specifications
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| Coil / Supply Voltage | 200–480 V AC | |
|---|---|---|
| Operation | Automatic | |
| Device Type | Automatic transfer switch | |
| Series | TruONE ATS | |
| ABB order code | 1SCA150976R1001 | |
| Product group | OT Change over Switches | |
| Product type | Automatic transfer switch | |
| Rated current | 400 A | |
| Number of poles | 4 | |
| Fourth pole type | Switched late-break and early-make neutral | |
| Controller | Level 3 (LCD) | |
| Transition type | Open transition I-II | |
| Neutral configuration | Overlapping neutral | |
| Fourth pole position | Right side | |
| Operating voltage | 200–480 V AC | |
| Rated insulation voltage | 1000 V | |
| Rated impulse withstand voltage | 12 kV | |
| Terminal arrangement | Supplies top / load bottom | |
| Protection rating front | IP20 | |
| Dimensions (H × W × D) | approx. 313 × 512 × 183 mm | |
| Weight | approx. 20.39 kg |
Frequently Asked Questions
What is the ABB OXA400U3O3QT used for?
The ABB OXA400U3O3QT is a 400 A TruONE automatic transfer switch used to transfer electrical loads automatically between two power sources in critical and standby power systems.
What controller does the ABB OXA400U3O3QT use?
The OXA400U3O3QT includes an ABB Level 3 controller with LCD interface for transfer control, monitoring and configuration.
What does overlapping neutral mean on the OXA400U3O3QT?
The overlapping neutral arrangement uses a switched fourth pole designed to maintain neutral continuity during transfer between power sources.
How are the terminals arranged on the OXA400U3O3QT?
The OXA400U3O3QT uses a supplies-on-top and load-on-bottom connection arrangement.
What type of transfer operation does the OXA400U3O3QT provide?
The OXA400U3O3QT provides open-transition I-II operation for automatic transfer between two sources.
Trusted by Critical Power Professionals Worldwide
ABB TruONE automatic transfer switches provide integrated switching and control solutions for electrical engineers, panel builders and system integrators requiring dependable automatic power transfer in commercial, industrial and critical infrastructure applications.
