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OXA200U3S3QT ABB TruONE 250A 4-Pole Automatic Transfer Switch
ABB TruONE OXA200U3S3QT is a 250 A IEC / 200 A UL 4-pole open-transition automatic transfer switch with simultaneous switched neutral, Level 3 LCD controls, 200–480 V AC operation and top-entry source connections.
£7,288.17
Why Choose the ABB TruONE OXA200U3S3QT Automatic Transfer Switch?
The ABB TruONE OXA200U3S3QT is a 250 A IEC / 200 A UL 4-pole automatic transfer switch designed for dependable automatic transfer between two power sources. Supplied under ABB order code 1SCA152038R1001, it combines the switching mechanism and controller within ABB's integrated TruONE ATS platform.
This model features a 4-pole simultaneous switched-neutral configuration and open-transition I-II operation without a stable OFF position between Source 1 and Source 2. The fourth pole switches simultaneously with the phase poles, providing full 4-pole source transfer for installations requiring the neutral conductor to be switched.
The OXA200U3S3QT incorporates a Level 3 controller with LCD interface and operates across a 200–480 V AC main-circuit range. Its top-entry source arrangement places Source 1 and Source 2 connections at the top and the load connections at the bottom, providing a practical configuration for compatible power distribution switchboards.
Key Advantages
- 250 A IEC / 200 A UL rating for commercial and industrial automatic transfer applications.
- Integrated TruONE architecture combines the transfer switch and controller within one purpose-built assembly.
- 4-pole simultaneous switched-neutral configuration provides complete phase and neutral switching.
- Open-transition I-II operation provides controlled transfer between two power sources.
- Level 3 LCD controller supports comprehensive ATS monitoring, configuration and control.
- Wide 200–480 V AC main-circuit operating range.
- Top-entry source connections with load connections at the bottom.
- Integrated construction helps reduce external wiring and connection points.
Key Features
- ABB TruONE ATS integrated automatic transfer switch.
- IEC rated current: 250 A.
- UL rated current: 200 A.
- 4-pole configuration.
- Fourth pole: Simultaneous switched function.
- Open-transition I-II operation.
- Level 3 controller with LCD interface.
- Main-circuit voltage: 200–480 V AC.
- Top entry: Source 1 and Source 2 connections at top, load connections at bottom.
- Manual operating handle included.
- Detachable HMI arrangement.
- 2 m RJ45 HMI-to-ATS connection cable included.
- Terminal connection kits and mechanical lugs available separately.
Integrated 4-Pole Automatic Power Transfer
ABB TruONE integrates the automatic transfer switching mechanism and controller into one purpose-built assembly, reducing the separate wiring and connections associated with conventional ATS designs. The OXA200U3S3QT manages transfer between two sources using open-transition I-II operation while its Level 3 LCD controller provides local monitoring, configuration and control.
The 4-pole simultaneous switched-neutral arrangement switches the neutral together with the three phase conductors during source transfer. Combined with its 250 A IEC rating, 200–480 V AC capability and top-entry source connections, the OXA200U3S3QT provides a versatile automatic transfer solution for standby and critical-power installations.
Typical Applications
- Mains-to-generator automatic transfer systems.
- Commercial building standby power systems.
- Industrial power distribution switchboards.
- Critical manufacturing and process installations.
- Data and communications infrastructure.
- Healthcare and essential-services power systems.
- 4-pole systems requiring simultaneous switched-neutral transfer.
- Switchboards requiring top-entry source and bottom load connections.
Technical Specifications
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| Operation | Automatic | |
|---|---|---|
| Device Type | Automatic transfer switch | |
| Product family | TruONE ATS | |
| ABB order code | 1SCA152038R1001 | |
| Product type | Automatic transfer switch | |
| Product group | OT Change over Switches | |
| IEC rated current | 250 A | |
| UL rated current | 200 A | |
| Number of poles | 4 | |
| Fourth pole type | Switched – simultaneous function | |
| Transfer type | Open transition | |
| Operating sequence | I-II without stable OFF position | |
| Controller | Level 3 | |
| User interface | LCD | |
| Rated operational voltage | 200–480 V AC | |
| Rated frequency | 50–60 Hz | |
| Rated insulation voltage (Ui) | 1000 V | |
| Rated impulse withstand voltage (Uimp) | 8 kV | |
| Rated short-time withstand current (Icw) | 18 kA rms for 0.3 s | |
| Power loss | 5.8 W per pole at rated operating conditions | |
| Construction | Open style | |
| Front degree of protection | IP20 | |
| Cabling direction | Top entry | |
| Source 1 connection | Top | |
| Source 2 connection | Top | |
| Load connection | Bottom | |
| Terminal type | Bolt | |
| HMI | Detachable | |
| HMI connection cable | 2 m RJ45 cable, included | |
| Manual operating handle | Included | |
| Dimensions (H × W × D) | 305 × 375 × 183 mm | |
| Product net weight | 15.27 kg | |
| Standards | UL 1008 / IEC 60947-6-1 |
Frequently Asked Questions
What is the current rating of the ABB OXA200U3S3QT?
The OXA200U3S3QT is rated at 250 A under IEC ratings and 200 A under UL ratings.
Is the ABB OXA200U3S3QT a 4-pole automatic transfer switch?
Yes. The OXA200U3S3QT is a 4-pole ABB TruONE automatic transfer switch with a simultaneous switched fourth pole.
What type of transfer does the OXA200U3S3QT use?
The OXA200U3S3QT uses open-transition I-II operation without a stable OFF position between Source 1 and Source 2.
Where are the source and load connections on the OXA200U3S3QT?
This model uses a top-entry source arrangement, with Source 1 and Source 2 connections at the top and the load connections at the bottom.
What is included with the ABB OXA200U3S3QT?
The OXA200U3S3QT includes a manual operating handle and a 2 m RJ45 connection cable between the detachable HMI and ATS frame. Terminal connection kits and mechanical lugs are available separately.
Trusted ABB Automatic Transfer Switching
ABB TruONE automatic transfer switches combine switching and control functions within an integrated ATS platform designed for dependable source transfer, simplified installation and efficient operation in critical power systems.
