OT250E03C ABB 250 A 3-Pole Manual Changeover Switch

Why Choose the ABB OT250E03C 250 A 3-Pole Changeover Switch?

The ABB OT250E03C is a robust 250 A 3-pole manual changeover switch-disconnector designed for reliable switching and isolation between electrical supplies in low-voltage power distribution systems. As part of the ABB OT Changeover Switches range, it is suitable for industrial switchboards, distribution panels, generator systems and other applications requiring dependable manual source selection.

This model provides I-O-II open-transition operation with a stable OFF position, ensuring that the circuit passes through isolation when changing between the two source positions. Its three-pole configuration is designed for three-phase systems, while the operating mechanism is positioned on the left-hand side of the switch.

Rated at 250 A, the OT250E03C provides reliable switching for AC applications and has a 1000 V rated insulation voltage. This version is supplied without an operating handle and shaft, allowing suitable ABB operating accessories to be selected separately according to the panel or enclosure design.

Key Advantages

• Heavy-duty 250 A manual changeover switch-disconnector for industrial power distribution.
• 3-pole configuration suitable for three-phase electrical systems.
• I-O-II open-transition operation with a stable OFF position.
• Left-hand operating mechanism for the specified installation arrangement.
• Provides both switching and isolation functionality.
• 250 A AC-22A and AC-23A switching capability at 415 V.
• Handle and shaft can be selected separately to suit the installation.

Key Features

• ABB OT Changeover Switches range.
• 250 A rated current.
• 3-pole switching configuration.
• Manual I-O-II source selection.
• Open-transition switching with stable OFF position.
• Left-hand operating mechanism.
• 1000 V rated insulation voltage.
• 250 A AC-22A rating at 415 V.
• 250 A AC-23A rating at 415 V.
• 20 mm terminal width.

Reliable Switching and Isolation for Three-Phase Systems

The ABB OT250E03C combines changeover switching and isolation in a single robust device. Its I-O-II operating arrangement passes through a stable OFF position during source transfer, providing controlled manual selection between two electrical supplies while supporting safe circuit isolation.

The OT250E03C is designed for demanding three-phase power distribution applications. Its 250 A rating, three-pole construction and separately selected handle and shaft make it a flexible solution for panel builders, machine builders and electrical distribution installations.

Typical Applications

• Main and alternative power supply changeover systems.
• Generator and mains source-selection systems.
• Industrial low-voltage distribution switchboards.
• Three-phase electrical distribution panels.
• Industrial machinery and plant power systems.
• Commercial and infrastructure electrical installations.