OXA60U3O3QB ABB TruONE UL 60 A Automatic Transfer Switch with Overlapping Neutral

Why Choose the ABB OXA60U3O3QB TruONE Automatic Transfer Switch?

The ABB OXA60U3O3QB is a 60 A UL TruONE automatic transfer switch (ATS) with overlapping neutral, designed to provide automatic transfer between two power sources in critical and standby power applications. As part of the advanced ABB TruONE ATS series, it integrates the transfer switch and controller into a single purpose-built assembly for streamlined installation, operation and maintenance.

This configuration features open-transition I-II operation without a stable OFF position between source positions and incorporates an overlapping neutral. During transfer between sources, the overlapping-neutral arrangement prevents the neutral conductor from being disconnected from the load, supporting applications where continuity of the neutral connection is required.

With a 60 A UL rated current and four-pole configuration, the OXA60U3O3QB is an open-style ATS designed for integration into electrical panels and switchboards. This bottom-entry configuration places Source 1 and Source 2 connections at the bottom with the load connections at the top, and the unit is supplied with a manual operating handle and a 2 m HMI connection cable.

Key Advantages

• Purpose-built ABB TruONE automatic transfer switch combining switching and control in one assembly.
• 60 A UL rated current for compatible critical and standby power systems.
• Four-pole configuration with overlapping-neutral functionality.
• Open-transition I-II operation without a stable OFF position between sources.
• Overlapping neutral maintains the neutral connection to the load during source transfer.
• Integrated ATS architecture reduces external wiring and simplifies panel integration.
• Manual operating capability remains available when required.

Key Features

• ABB TruONE ATS series.
• 60 A UL rated current.
• Four-pole automatic transfer switch.
• Overlapping neutral (OLN) configuration.
• Open-transition transfer.
• I-II operation without a stable OFF position between I and II.
• Bottom-entry arrangement with Source 1 and Source 2 connections at the bottom.
• Load connections positioned at the top.
• Manual operating handle included.
• 2 m connection cable supplied between the detachable HMI and ATS frame.
• Open-style construction for integration into compatible enclosures and panels.
• ABB order code 1SCA153353R1001.

Reliable Automatic Transfer for Critical Power Systems

Automatic transfer switches monitor and control the connection of loads between available power sources, allowing critical electrical systems to transfer to an alternative supply when required. ABB TruONE integrates the switching mechanism and ATS controller into one coordinated unit, reducing the amount of external wiring and simplifying installation compared with systems assembled from separate switching and control components.

The OXA60U3O3QB combines automatic source transfer with an overlapping-neutral four-pole arrangement. Its neutral pole remains connected to the load during the transition from one source to the other, while the main source contacts perform open-transition I-II switching. This makes the configuration suitable for critical-power installations requiring controlled source transfer and neutral continuity.

Typical Applications

• Standby generator and utility power transfer systems.
• Critical-power distribution panels.
• Commercial and industrial buildings.
• Data centres and communications infrastructure.
• Healthcare and essential-services electrical systems.
• OEM generator and power-control panels.
• Facilities requiring automatic transfer between primary and alternative power sources.