OXA160U3O3QT ABB TruONE 160A 4-Pole Automatic Transfer Switch

Why Choose the ABB TruONE OXA160U3O3QT Automatic Transfer Switch?

The ABB TruONE OXA160U3O3QT is a 160 A 4-pole automatic transfer switch designed for dependable automatic source transfer in critical power distribution systems. Supplied under ABB order code 1SCA153290R1001, it combines the transfer switch and controller within ABB's integrated TruONE ATS platform.

This model features an overlapping-neutral configuration with open-transition I-II operation without a stable OFF position between Source 1 and Source 2. The overlapping neutral remains connected to the load during the source-transfer sequence, with an overlap period below 100 ms and the overlapping-neutral pole positioned on the right-hand side.

The OXA160U3O3QT incorporates Level 3 controls with an LCD interface and uses a top-entry connection arrangement: Source 1 and Source 2 connect at the top, while the load connects at the bottom. The integrated TruONE design reduces external wiring and connection points while providing a compact solution for automatic standby and alternative-source switching.

Key Advantages

• 160 A rated current under both UL and IEC ratings.
• Integrated TruONE architecture combines the automatic transfer switch and controller in one unit.
• 4-pole overlapping-neutral configuration maintains neutral continuity during transfer.
• Open-transition I-II operation without a stable OFF position between sources.
• Level 3 LCD controls provide comprehensive ATS monitoring and control.
• Top-entry arrangement with Source 1 and Source 2 at the top and load at the bottom.
• Detachable HMI supports convenient commissioning, operation and maintenance.
• Purpose-built for critical, standby and alternative-source power systems.

Key Features

• ABB TruONE ATS integrated automatic transfer switch.
• Rated current: 160 A UL / 160 A IEC.
• 4-pole configuration.
• Overlapping neutral.
• Neutral overlap period below 100 ms.
• Open-transition I-II operation.
• Level 3 controller with LCD interface.
• Top entry: Source 1 and Source 2 connections at top, load connections at bottom.
• Manual operating handle included.
• Detachable HMI arrangement.
• 2 m HMI-to-ATS connection cable included.
• Terminal connection kits and mechanical lugs available separately.

Integrated Automatic Transfer with Overlapping Neutral

ABB TruONE integrates automatic transfer switching and control functions within a single purpose-built assembly, reducing the quantity of external wiring and separate components required in a conventional ATS installation. The OXA160U3O3QT automatically manages transfer between two sources using open-transition I-II operation and provides local control and monitoring through its Level 3 LCD interface.

Its overlapping-neutral arrangement maintains the neutral connection to the load during the source-transfer sequence, with the neutral contacts overlapping for less than 100 ms. Combined with its 160 A rating and top-entry source arrangement, the OXA160U3O3QT provides a compact automatic transfer solution for critical and standby power systems.

Typical Applications

• Mains-to-generator automatic transfer systems.
• Commercial building standby power systems.
• Industrial control and power distribution panels.
• Critical manufacturing and process equipment.
• Data and communications infrastructure.
• Healthcare and essential-services installations.
• 4-pole systems requiring overlapping-neutral transfer.
• Switchboards requiring top-entry source and bottom load connections.