OXB250E3X4QB ABB TruONE Automatic Transfer Switch 250 A 3P

OXB250E3X4QB ABB TruONE Automatic Transfer Switch 250 A 3P

ABB OXB250E3X4QB TruONE automatic transfer switch, a 250 A 3 pole ATS with Level 4 Touch controller designed for reliable automatic power transfer in low voltage distribution systems.

SKU: OXB250E3X4QBAlt SKU: 1SCA153463R1001MPN: OXB250E3X4QB
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Why Choose the ABB OXB250E3X4QB TruONE Automatic Transfer Switch?

The ABB OXB250E3X4QB is a high-performance automatic transfer switch (ATS) designed to provide reliable source transfer for critical low-voltage power 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 4 (Touch) controller, open style construction and delayed transition I-O-II operation. The self-contained design reduces wiring requirements and connection points, helping speed installation while minimising potential connection failures and reducing service downtime. :chatgpt-content-reference{index="1"}

With a 250 A rated current, 3-pole configuration, 200–480 V AC main circuit voltage and a Supplies on Bottom – Load on Top terminal arrangement, the OXB250E3X4QB is suitable for demanding automatic transfer applications requiring dependable switching between power sources. :chatgpt-content-reference{index="2"}

Key Advantages

  • ABB TruONE automatic transfer switch technology with integrated switch and controller design.
  • 250 A rated current suitable for high-capacity low-voltage power transfer applications.
  • 3-pole switched configuration for reliable source transfer.
  • Level 4 (Touch) controller for advanced ATS configuration and monitoring.
  • Delayed transition I-O-II operation for controlled source transfer sequences.
  • Self-contained construction reduces installation complexity.
  • Modular components support easier maintenance and reduced downtime.

Key Features

  • ABB TruONE ATS series.
  • Automatic transfer switch with integrated controller.
  • 250 A conventional free-air thermal current.
  • 3-pole switched configuration.
  • Level 4 (Touch) 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 OXB250E3X4QB help maintain continuity of electrical supply by automatically transferring connected loads between available power sources when required. The integrated switching and control architecture improves operational reliability while reducing installation complexity.

The TruONE platform is engineered for modern electrical distribution environments requiring dependable transfer performance, advanced monitoring and simplified maintenance. Its Level 4 Touch controller provides enhanced configuration options for standby power and critical power applications.

Typical Applications

  • Critical power distribution systems.
  • Generator backup and standby power systems.
  • Industrial electrical installations.
  • Commercial building power systems.
  • Healthcare and essential service facilities.
  • 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 1SCA153463R1001
Rated current 250 A
Number of poles 3P
Controller type Level 4 (Touch)
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
Rated short-time withstand current 18 kA rms for 0.3 s
Terminal type Bolt
Line terminal position Supplies on bottom, load on top
Standards IEC60947-6-1
Protection rating Front IP20
Mounting style Open style ATS
Dimensions (H × W × D) 305 × 330 × 183 mm
Weight 14.12 kg

Frequently Asked Questions

What is the ABB OXB250E3X4QB used for?

The ABB OXB250E3X4QB 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 OXB250E3X4QB has a rated current of 250 A.

What controller is included with the OXB250E3X4QB?

The ATS includes an integrated Level 4 (Touch) controller for advanced monitoring and configuration.

How many poles does the ABB OXB250E3X4QB have?

The OXB250E3X4QB features a 3-pole switched configuration.

What voltage range does the ABB TruONE ATS support?

The OXB250E3X4QB 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.