OXA800U3O3QT ABB TruONE 1000A 4-Pole Automatic Transfer Switch

Why Choose the ABB TruONE OXA800U3O3QT Automatic Transfer Switch?

The ABB TruONE OXA800U3O3QT is a high-capacity 1000 A 4-pole automatic transfer switch designed for dependable automatic transfer between two electrical power sources in critical power distribution systems. Supplied under ABB order code 1SCA153566R1001, it combines the switching mechanism and controller within ABB's integrated TruONE ATS platform. :chatgpt-content-reference{index="0"}

This model features a 4-pole switched-neutral configuration with open-transition I-II operation and a Level 3 controller with LCD interface. The fourth pole uses a switched late-break and early-make function to provide controlled neutral switching performance for advanced automatic transfer applications. :chatgpt-content-reference{index="1"}

The OXA800U3O3QT uses a top-entry connection arrangement with Source 1 and Source 2 connections at the top and load connections at the bottom. Its wide 200–480 V AC operating range and integrated controller make it suitable for industrial, commercial and critical standby power systems. :chatgpt-content-reference{index="2"}

Key Advantages

• 1000 A automatic transfer switch for high-current power applications.
• Integrated TruONE architecture combines the switch and controller into one unit.
• 4-pole switched-neutral design supports complete source transfer including neutral.
• Open-transition I-II operation transfers between sources without paralleling supplies.
• Level 3 LCD controller provides advanced ATS monitoring and control.
• 200–480 V AC voltage range supports a broad range of installations.
• Top-entry source arrangement simplifies integration into suitable switchboards.
• Direct-mounted handle provides local manual operating capability.

Key Features

• ABB TruONE ATS integrated automatic transfer switch.
• IEC rated current: 1250 A.
• UL/CSA rated current: 1000 A at 200–480 V AC.
• 4-pole configuration.
• Fourth pole: Switched late-break and early-make function.
• Open-transition I-II operation.
• Level 3 controller with LCD interface.
• Main circuit voltage: 200–480 V AC.
• Top entry: supply connections at top, load connections at bottom.
• Direct-mounted handle.
• Bolt terminal connection system.
• Front protection rating IP20.

Integrated Automatic Power Transfer for Critical Systems

ABB TruONE combines the automatic transfer switch and controller into a single purpose-built assembly, reducing external wiring and connection points compared with traditional ATS solutions. The OXA800U3O3QT provides automatic source transfer using open-transition I-II operation with Level 3 LCD-based control. :chatgpt-content-reference{index="3"}

Its switched-neutral 4-pole design allows the neutral conductor to be transferred with the phase conductors, while the late-break and early-make fourth pole arrangement provides controlled neutral switching characteristics. Combined with its 1250 A IEC rating, 1000 A UL rating, 200–480 V AC capability and top-entry connection layout, it provides a flexible solution for critical and standby power installations. :chatgpt-content-reference{index="4"}

Typical Applications

• Mains-to-generator automatic transfer systems.
• Industrial power distribution switchboards.
• Commercial building standby power systems.
• Critical manufacturing and process installations.
• Data centres and communications infrastructure.
• Healthcare and essential-services electrical systems.
• Large automatic source selection installations.
• 4-pole systems requiring switched-neutral transfer.