1SDA073444R1 ABB E2.2H/MS 1000 4p FHR Switch Disconnector

Why Choose the ABB E2.2H/MS 1000 4p FHR Switch Disconnector?

The ABB E2.2H/MS 1000 4p FHR, order code 1SDA073444R1, is a high-performance four-pole air switch disconnector from the ABB SACE Emax 2 range, designed for dependable switching and isolation in demanding low-voltage power distribution systems. Based on the E2.2 frame, this /MS version combines a 1000 A rated uninterrupted current with the high short-time withstand capability required in industrial and infrastructure switchboards.

The E2.2H/MS performance level provides a rated short-time withstand current of 85 kA, making this switch disconnector particularly suitable for installations with high prospective fault currents. Its four-pole construction enables simultaneous switching of all four poles, while the robust Emax 2 architecture supports reliable operation in critical power distribution applications.

This model is supplied in a fixed configuration with rear horizontal terminals (FHR) and has a rated operational voltage of 690 V AC. The combination of high-current capacity, strong short-time withstand performance and fixed rear-connected construction makes the 1SDA073444R1 an effective solution for main distribution boards and high-power electrical installations.

Key Advantages

• High-capacity 1000 A four-pole air switch disconnector.
• High 85 kA rated short-time withstand current for demanding distribution systems.
• Four-pole switching for comprehensive circuit isolation.
• 690 V AC rated operational voltage for industrial low-voltage networks.
• Fixed E2.2 frame designed for permanent switchboard installations.
• Rear horizontal terminals provide an efficient connection arrangement for switchboard busbars.
• Part of the proven ABB SACE Emax 2 platform for low-voltage power distribution.

Key Features

• ABB SACE Emax 2 E2.2H/MS switch disconnector.
• 1000 A rated uninterrupted current (Iu).
• Four-pole configuration.
• 85 kA rated short-time withstand current (Icw).
• 690 V AC rated operational voltage (Ue).
• Suitable for AC-23 switching duties.
• Fixed installation design.
• Rear horizontal terminal configuration.
• Mechanical switching and isolation functionality for low-voltage circuits.
• Designed for integration into industrial and commercial power distribution switchboards.

Reliable High-Current Isolation for Power Distribution

Switch disconnectors such as the ABB E2.2H/MS are designed to provide controlled switching and secure electrical isolation rather than automatic overcurrent protection. This makes them suitable for applications where a dedicated switching and isolating device is required alongside appropriately coordinated protective equipment.

The E2.2H/MS 1000 combines a 1000 A continuous current rating with an 85 kA short-time withstand capability, enabling it to remain mechanically and electrically robust under the high fault-current conditions that can occur in major low-voltage distribution systems. Its fixed four-pole construction and rear horizontal connections make it particularly well suited to integration into high-current switchboard assemblies.

Typical Applications

• Main low-voltage distribution switchboards.
• Industrial power distribution systems.
• Commercial and infrastructure electrical installations.
• High-current switchgear assemblies.
• Main incoming and outgoing isolation duties.
• Transformer and generator distribution systems.
• Manufacturing and process plant electrical distribution.