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OT250E13C ABB 250A 4-Pole Manual Change-Over Switch

OT250E13C ABB 250A 4-Pole Manual Change-Over Switch

ABB OT250E13C is a 250 A 4-pole manual I-O-II open-transition change-over switch designed for reliable power source selection in low-voltage electrical distribution systems.

SKU: OT250E13CAlt SKU: 1SCA022777R0920MPN: OT250E13C
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Why Choose the ABB OT250E13C Manual Change-Over Switch?

The ABB OT250E13C is a robust 250 A 4-pole manual change-over switch designed for reliable selection between two electrical power sources. As part of the ABB OT change-over switch range, it provides dependable I-O-II switching for industrial, commercial and infrastructure low-voltage distribution systems.

The OT250E13C uses an open-transition I-O-II operating sequence, providing a defined OFF position between source I and source II. This break-before-make arrangement disconnects one source before the alternative source is connected, supporting controlled manual source transfer and electrical isolation.

With a rated current of 250 A and a 4-pole configuration, the OT250E13C is suitable for applications requiring four conductors to be switched together. This E13 configuration is supplied without the operating handle and shaft, allowing the appropriate ABB operating accessories to be selected separately for the installation.

Key Advantages

  • Heavy-duty 250 A manual change-over switch for electrical distribution applications.
  • 4-pole configuration provides simultaneous switching across four conductors.
  • I-O-II open-transition operation provides a defined OFF position between sources.
  • Break-before-make switching supports controlled source transfer.
  • Front-operated design suitable for integration into electrical switchboards and distribution assemblies.
  • Handle and shaft are ordered separately, allowing the operating arrangement to be matched to the installation.

Key Features

  • ABB OT change-over switch series.
  • 250 A rated current.
  • 4-pole manual change-over configuration.
  • I-O-II switching sequence.
  • Open-transition, break-before-make operation.
  • Front-operated mechanism.
  • Suitable for mounting in electrical distribution assemblies.
  • Handle and shaft supplied separately.
  • Rated for demanding AC-21 and AC-23 switching applications.

Reliable Manual Power Source Change-Over

Manual change-over switches provide controlled selection between two electrical supplies. The ABB OT250E13C uses an open-transition I-O-II sequence so that the active source is disconnected before the alternative source is connected, with a defined OFF position available between the two source positions.

The OT250E13C is engineered for demanding low-voltage distribution applications. Its 250 A rating and four-pole construction make it suitable for switchboards and source-transfer installations where all four conductors need to be switched as part of the manual change-over operation.

Typical Applications

  • Mains and alternative power source selection.
  • Generator and mains manual change-over systems.
  • Industrial low-voltage distribution switchboards.
  • Commercial and infrastructure electrical distribution.
  • Four-pole power source transfer systems.
  • Manufacturing plants and industrial electrical installations.

Technical Specifications

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Operation Manual
Device Type Manual changeover switch
Series OT Change-Over Switches
ABB order code 1SCA022777R0920
Product type Manual change-over switch
Rated current 250 A
Number of poles 4
Operation Manual
Switch positions I-O-II
Transition type Open transition
Operating method Front operated
Handle and shaft Ordered separately
Rated operational voltage Up to 1000 V AC
AC-21 rated current at 400 V 250 A
AC-23 rated current at 400 V 250 A
AC-23 operational power at 400 V 140 kW
Rated short-time withstand current 8 kA
Connection type Screw connection
Front protection rating IP20
Dimensions (H × W × D) 150 × 205 × 160 mm

Frequently Asked Questions

What is the ABB OT250E13C used for?

The ABB OT250E13C is used for manual change-over between two electrical power sources in industrial, commercial and infrastructure power distribution systems.

What is the rated current of the OT250E13C?

The OT250E13C has a rated current of 250 A.

How many poles does the ABB OT250E13C have?

The OT250E13C is a 4-pole manual change-over switch, enabling four conductors to be switched together during source transfer.

What switching sequence does the OT250E13C use?

The switch uses an I-O-II open-transition sequence, providing a defined OFF position between source I and source II.

Are the handle and shaft included with the ABB OT250E13C?

No. The operating handle and shaft must be ordered separately, allowing suitable ABB operating accessories to be selected for the installation.

Trusted by Electrical Professionals Worldwide

ABB OT change-over switches are widely used in industrial and commercial electrical distribution systems where dependable manual source selection, controlled isolation and robust switching performance are required.