1SDA125949R1 ABB E4.3V/MS 2000 4p FHR Switch-Disconnector

Why Choose the ABB E4.3V/MS 2000 4p FHR Switch-Disconnector?

The ABB E4.3V/MS 2000 4p FHR (1SDA125949R1) is a high-current SACE Emax 3 switch-disconnector designed for switching and isolation duties in demanding low-voltage electrical distribution systems. Rated at 2000 A, this four-pole fixed device combines ABB's E4.3 frame with the V/MS switch-disconnector configuration.

Unlike an Emax 3 circuit breaker equipped with an Ekip electronic trip unit, the E4.3V/MS is an MS switch-disconnector intended primarily for circuit switching and isolation. Its fixed construction makes it suitable for permanent installation in main distribution switchboards where dependable high-current isolation is required.

This model features a four-pole fixed configuration with rear horizontal terminals. ABB specifies a rated current of 2000 A and a short-circuit capability of 150 kA at 415 V, providing a robust switching solution for industrial, commercial and infrastructure power distribution assemblies.

Key Advantages

• ABB SACE Emax 3 switch-disconnector for demanding low-voltage distribution systems.
• 2000 A rated current for high-current switching and isolation applications.
• Four-pole construction for applications requiring switching across all four poles.
• Fixed execution for permanent integration within low-voltage switchboards.
• Rear horizontal terminals for practical switchboard connection.
• 150 kA short-circuit capability at 415 V.

Key Features

• ABB SACE Emax 3 E4.3V/MS switch-disconnector.
• 2000 A rated current.
• Four-pole configuration.
• Fixed execution.
• E4.3 frame size.
• Dedicated MS switch-disconnector construction.
• Rear horizontal terminal arrangement.
• 150 kA short-circuit capability at 415 V.
• Designed for high-current switching and electrical isolation.
• Suitable for integration into low-voltage distribution switchboards.

Reliable High-Current Isolation and Switching

ABB SACE Emax 3 provides switching and protection solutions for modern low-voltage power infrastructure. The E4.3 platform accommodates substantial current levels while providing a practical format for integration into industrial and infrastructure distribution switchboards.

The E4.3V/MS 2000 is configured as a switch-disconnector rather than an overcurrent-protection circuit breaker. It is therefore suited to installations requiring a dedicated high-current switching and isolation device, with overcurrent and fault protection provided by appropriately coordinated protective equipment elsewhere in the electrical system.

Typical Applications

• Industrial low-voltage power distribution systems.
• Main switchboard switching and isolation.
• Data centres and critical power infrastructure.
• Manufacturing and process industry switchboards.
• Large commercial building electrical distribution.
• Utility and infrastructure power installations.