1SDA100546R1 ABB XT5D 400 400 A 3-Pole Switch-Disconnector

Why Choose the ABB XT5D 400 1SDA100546R1 Switch-Disconnector?

The ABB XT5D 400 1SDA100546R1 is a 400 A three-pole switch-disconnector designed for dependable switching and isolation in low-voltage electrical distribution systems. Part of the ABB SACE Tmax XT series, it uses the compact XT5 platform and provides a fixed installation format with front terminals for integration into industrial and commercial switchboards.

Unlike an MCCB equipped with an overcurrent protection release, the XT5D is primarily designed for switching and circuit isolation. Its switch-disconnector construction provides a clear means of disconnecting electrical circuits and is suitable for applications where isolation is required alongside separately coordinated circuit protection.

The 1SDA100546R1 is rated at 400 A and supports AC-22A and AC-23A utilisation at up to 690 V AC. It is a three-pole, fixed-mounted device with front terminals and has a rated short-time withstand current of 5 kA for 1 second, making it a robust isolation solution for modern low-voltage distribution equipment.

Key Advantages

• 400 A switch-disconnector for reliable low-voltage circuit switching and isolation.
• ABB SACE Tmax XT5 platform provides a compact solution for switchboard integration.
• Suitable for AC-22A and AC-23A applications up to 690 V AC.
• 5 kA short-time withstand current for 1 second.
• Three-pole fixed construction for three-phase electrical systems.
• Front terminals simplify integration into conventional distribution-board layouts.

Key Features

• ABB SACE Tmax XT series.
• XT5D 400 switch-disconnector configuration.
• 400 A rated current.
• Three-pole construction.
• Fixed mounting with front terminals.
• Rated for switching and isolation rather than conventional overcurrent protection.
• AC-22A: 400 A at 415/440 V AC and 690 V AC.
• AC-23A: 400 A at 415/440 V AC and 690 V AC.
• Suitable for selected DC switching applications with poles connected in series.
• Optional motor operating mechanism and shunt-opening accessories can be incorporated into compatible assemblies.

Reliable Switching and Isolation for Low-Voltage Systems

A switch-disconnector provides controlled switching together with an isolation function, allowing sections of an electrical installation to be disconnected when required for operation, servicing or maintenance. The ABB XT5D is based on the Tmax XT moulded-case platform, providing a compact device that integrates naturally with compatible ABB switchboard components and accessories.

The XT5D 400 is specifically a switch-disconnector rather than an overcurrent-protective MCCB. Consequently, applications requiring automatic overload or short-circuit protection should use appropriately coordinated protective devices elsewhere in the installation. This makes the 1SDA100546R1 particularly useful as a main isolator, feeder isolator or switching device where dependable circuit separation is the primary requirement.

Typical Applications

• Main switch and isolation duties in low-voltage switchboards.
• Industrial electrical distribution systems.
• Feeder and distribution-circuit isolation.
• Machinery and process-system isolation.
• Commercial and infrastructure distribution panels.
• AC and compatible DC switching applications requiring a 400 A switch-disconnector.