OT250ES03K ABB 250 A 3-Pole Side-Operated Switch-Disconnector with Direct-Mounted Handle

Why Choose the ABB OT250ES03K Switch-Disconnector?

The ABB OT250ES03K is a robust 250 A three-pole side-operated switch-disconnector designed for dependable switching and electrical isolation in industrial power distribution, machinery and switchboard applications. As part of the proven ABB OT switch-disconnector series, it combines high switching performance with a compact side-operated configuration.

This model features a left-side operating mechanism with a direct-mounted handle, making it suitable for installations where side access is preferred or required by the equipment layout. The OT250ES03K is base mounted and supplied with a black ON-OFF direct-mount handle as standard, with the handle padlockable in the OFF position for secure isolation.

With an open-air thermal current rating of 250 A, the OT250ES03K provides rated operational currents of 250 A AC-22A and 250 A AC-23A at 400–415 V. A terminal bolt kit is included as standard, providing a practical high-performance switching solution for industrial three-phase systems.

Key Advantages

• Heavy-duty 250 A switch-disconnector for industrial switching and isolation.
• Three-pole configuration for three-phase electrical systems.
• Side-operated design with mechanism on the left.
• Supplied with a black ON-OFF direct-mounted handle.
• Handle is padlockable in the OFF position for secure maintenance isolation.
• 250 A AC-22A and AC-23A performance at 400–415 V.

Key Features

• ABB OT switch-disconnector series.
• 250 A open-air thermal current.
• 3-pole switching configuration.
• Side operated.
• Operating mechanism positioned on the left.
• Direct-mounted ON-OFF handle included.
• Base-mounted construction for integration into electrical assemblies.
• 250 A AC-22A operational current at 400–415 V.
• 250 A AC-23A operational current at 400–415 V.
• M8 × 25 mm terminal bolt kit included as standard.

Side-Operated Switching and Secure Isolation

Side-operated switch-disconnectors provide a practical alternative to conventional front-operated arrangements where enclosure dimensions, busbar layouts or equipment accessibility favour operation from the side. The OT250ES03K combines this installation flexibility with simultaneous three-pole switching for dependable isolation of three-phase electrical systems.

The left-side mechanism and included direct-mounted handle allow local operation at the switch, while the ability to padlock the handle in the OFF position supports controlled isolation during maintenance. Its 250 A AC-22A and AC-23A ratings make it suitable for demanding industrial switching duties.

Typical Applications

• Industrial three-phase power distribution.
• Machine and equipment isolation.
• Side-operated electrical control panels.
• Industrial switchboards and distribution assemblies.
• Manufacturing and process equipment.
• OEM machinery requiring direct local isolation.