OXB125U3S2QB ABB TruONE Automatic Transfer Switch 125 A 4P

OXB125U3S2QB ABB TruONE Automatic Transfer Switch 125 A 4P

ABB OXB125U3S2QB TruONE automatic transfer switch, a 125 A 4 pole ATS with Level 2 DIP controller designed for reliable automatic power transfer in low voltage distribution systems.

SKU: OXB125U3S2QBAlt SKU: 1SCA153395R1001MPN: OXB125U3S2QB
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Why Choose the ABB OXB125U3S2QB TruONE Automatic Transfer Switch?

The ABB OXB125U3S2QB is a compact and reliable automatic transfer switch (ATS) designed to provide dependable power source transfer for low-voltage electrical distribution systems. As part of the advanced ABB TruONE automatic transfer switch series, it combines the switching mechanism and controller into a single integrated unit to simplify installation, improve reliability and support continuous power availability. :chatgpt-content-reference{index="0"}

This TruONE ATS features an integrated Level 2 (DIP) controller and an open style construction with delayed transition operation. The self-contained design reduces wiring requirements and connection points, helping speed up installation while reducing potential connection failures and maintenance requirements. :chatgpt-content-reference{index="1"}

With a rated current of 125 A, a 4-pole switched configuration, 200–480 V AC main circuit voltage and a Supplies on Bottom – Load on Top terminal arrangement, the OXB125U3S2QB is suitable for automatic transfer applications where dependable source switching is required. :chatgpt-content-reference{index="2"}

Key Advantages

  • ABB TruONE automatic transfer switch technology with integrated switch and controller design.
  • 125 A rated current suitable for low-voltage power transfer applications.
  • 4-pole switched configuration with simultaneous neutral switching function.
  • Level 2 (DIP) controller for straightforward ATS configuration.
  • Delayed transition I-O-II operation for controlled transfer sequences.
  • Self-contained construction reduces installation complexity.
  • Modular design supports efficient maintenance and reduced downtime.

Key Features

  • ABB TruONE ATS series.
  • Automatic transfer switch with integrated controller.
  • 125 A conventional free-air thermal current.
  • 4-pole switched simultaneous function.
  • Level 2 (DIP) controller.
  • Open style ATS design.
  • Supplies on bottom, load on top terminal arrangement.
  • Delayed transition type I-O-II operation.
  • Direct mounted handle for manual operation.
  • Bolt terminal connection.

Reliable Automatic Power Transfer for Critical Systems

Automatic transfer switches such as the ABB TruONE OXB125U3S2QB maintain continuity of electrical supply by automatically transferring connected loads between available power sources when required. The integrated switching and control architecture helps improve reliability while reducing installation effort.

The TruONE platform is designed for modern electrical distribution systems requiring dependable transfer performance, simplified maintenance and flexible configuration. Its Level 2 DIP controller provides practical control functions for standby power and critical power applications.

Typical Applications

  • Commercial power distribution systems.
  • Generator backup and standby power systems.
  • Industrial electrical installations.
  • Building management power systems.
  • Critical infrastructure applications.
  • Low-voltage switchboards and distribution assemblies.

Technical Specifications

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Operation Automatic
Device Type Automatic transfer switch
Series TruONE Automatic Transfer Switches
Product type Automatic transfer switch (ATS)
Order code 1SCA153395R1001
Rated current 125 A
Number of poles 4P
Controller type Level 2 (DIP)
ATS style Open style
Transition type Delayed transition I-O-II
Main circuit voltage 200–480 V AC
Rated frequency 50–60 Hz
Rated insulation voltage 1000 V
Rated impulse withstand voltage 8 kV
Terminal type Bolt
Line terminal position Supplies on bottom, load on top
Standards UL1008
Protection rating Front IP20
Mounting style Open style ATS
Dimensions (H × W × D) approx. 305 × 375 × 183 mm
Weight approx. 15.54 kg

Frequently Asked Questions

What is the ABB OXB125U3S2QB used for?

The ABB OXB125U3S2QB is an automatic transfer switch designed to transfer electrical loads between available power sources in low-voltage distribution systems.

What is the rated current of this TruONE ATS?

The OXB125U3S2QB has a rated current of 125 A.

What controller is included with the OXB125U3S2QB?

The ATS includes an integrated Level 2 (DIP) controller for automatic transfer configuration and operation.

How many poles does the ABB OXB125U3S2QB have?

The OXB125U3S2QB features a 4-pole switched configuration with simultaneous function.

What voltage range does the ABB TruONE ATS support?

The OXB125U3S2QB supports a main circuit voltage range of 200–480 V AC.

Trusted by Power Distribution Professionals Worldwide

ABB TruONE automatic transfer switches are used by electrical engineers and system integrators worldwide to provide reliable automatic source transfer, simplified installation and dependable operation in critical power environments.