Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
OXA100U3S3QB ABB TruONE 100 A 4-Pole Automatic Transfer Switch Level 3
ABB OXA100U3S3QB is a 100 A 4-pole TruONE automatic transfer switch with a Level 3 LCD controller, open-transition operation, bottom source connections and top load connections for automatic power transfer applications.
£6,859.52
Why Choose the ABB OXA100U3S3QB TruONE Automatic Transfer Switch?
The ABB OXA100U3S3QB is a 100 A, 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 switch and controller into a single purpose-built unit, helping simplify installation while providing dependable transfer of critical power.
This model features a Level 3 controller with LCD interface and uses open-transition I-II operation without a stable OFF position between positions I and II. The integrated design reduces the number of separate components, wires and connections required compared with conventional transfer-switch arrangements.
The OXA100U3S3QB has a 100 A UL rated current and 4-pole configuration. Its connection arrangement places Source 1 and Source 2 connections at the bottom and the load connections at the top, making it suitable for switchboards designed around a bottom-source/top-load cable layout.
Key Advantages
- 100 A UL automatic transfer switch for critical and standby power systems.
- 4-pole configuration suitable for three-phase systems with switched neutral.
- Integrated Level 3 controller with LCD interface.
- Open-transition I-II operation without a stable OFF position.
- Source connections at the bottom and load connections at the top.
- Integrated TruONE architecture reduces separate wiring and connection points.
- Wide 200–480 V AC operating voltage range supports diverse power-system applications.
Key Features
- ABB TruONE ATS series.
- 100 A UL rated current.
- 4-pole automatic transfer switch.
- Level 3 controller with LCD user interface.
- Open-transition transfer operation.
- I-II operation without stable OFF position between sources.
- Bottom entry for Source 1 and Source 2 connections.
- Top load connections.
- Detachable HMI with connection cable to the ATS frame.
- Manual operating handle included for manual switch operation.
Integrated Automatic Power Transfer for Critical Loads
Automatic transfer switches monitor and transfer electrical loads between normal and alternative power sources when required. The ABB TruONE design integrates the switching mechanism and controller into a unified assembly, reducing external wiring and helping simplify the construction, commissioning and servicing of automatic transfer systems.
The OXA100U3S3QB uses open-transition I-II switching and a Level 3 controller to manage transfer operation. Its 100 A, 4-pole configuration and bottom-source/top-load connection layout make it suitable for commercial and industrial power distribution systems requiring automatic transfer between two available supplies.
Typical Applications
- Automatic mains-to-generator transfer systems.
- Commercial and industrial switchboards.
- Critical and standby power distribution.
- Emergency power supply systems.
- Building services and infrastructure installations.
- Industrial facilities requiring automatic transfer between two power sources.
Technical Specifications
Tick the specs you need, then view products that match.
| Operation | Automatic | |
|---|---|---|
| Device Type | Automatic transfer switch | |
| Series | TruONE ATS | |
| ABB order code | 1SCA153253R1001 | |
| Product group | OT Change over Switches | |
| Product type | Automatic transfer switch | |
| Rated current (UL) | 100 A | |
| Number of poles | 4 | |
| Controller | Level 3 | |
| Controller interface | LCD | |
| Transition type | Open transition | |
| Operating sequence | I-II without stable OFF position | |
| Operating voltage range | 200–480 V AC | |
| Source connection position | Bottom | |
| Load connection position | Top | |
| Rated insulation voltage | 1000 V | |
| Rated impulse withstand voltage | 8 kV | |
| Standard | UL 1008 | |
| Dimensions (H × W × D) | approx. 305 × 375 × 183 mm | |
| Weight | approx. 15.94 kg |
Frequently Asked Questions
What is the ABB OXA100U3S3QB used for?
The ABB OXA100U3S3QB is a 100 A automatic transfer switch used to transfer electrical loads between two power sources in standby, emergency and critical power applications.
How many poles does the OXA100U3S3QB have?
The OXA100U3S3QB has a 4-pole configuration, allowing all four conductors, including the neutral where applicable, to be switched.
Which controller is fitted to the ABB OXA100U3S3QB?
This TruONE ATS is equipped with a Level 3 controller with an LCD interface for transfer control, monitoring and configuration.
Where are the source and load connections on the OXA100U3S3QB?
The OXA100U3S3QB has Source 1 and Source 2 connections at the bottom of the switch, while the load connections are at the top.
What type of transfer operation does the OXA100U3S3QB use?
The switch uses open-transition I-II operation without a stable OFF position between positions I and II.
Trusted by Critical Power Professionals Worldwide
ABB TruONE automatic transfer switches integrate switching and control functions into a purpose-built ATS platform, providing electrical engineers, panel builders and system integrators with a dependable solution for automatic power-source transfer in critical and industrial installations.
