1SDA059344R1 ABB E2S/MS 1000 A 4-Pole Withdrawable Switch-Disconnector Moving Part

Why Choose the ABB 1SDA059344R1 E2S/MS 1000 Switch-Disconnector?

The ABB 1SDA059344R1 is a robust SACE Emax E2S/MS air switch-disconnector designed for switching and isolation duties in low-voltage electrical distribution systems. Identified by ABB as E2S/MS 1000 4p W MP new, this product is the moving part of a four-pole withdrawable switch-disconnector with a 1000 A rated current.

As part of the ABB New Emax product family, the E2S/MS is intended for demanding industrial and commercial power distribution applications where dependable switching, isolation and maintainability are required. Unlike an automatic circuit breaker equipped with an electronic protection release, the E2S/MS is a switch-disconnector intended primarily for circuit switching and isolation, with system overcurrent protection provided by appropriately coordinated protective devices.

The four-pole withdrawable configuration allows switching of the three phase conductors together with the neutral and enables the moving part to be withdrawn from a compatible fixed part. This construction is particularly useful in switchboards where maintainability, isolation and convenient replacement of switching equipment are important.

Key Advantages

• Heavy-duty ABB SACE Emax switch-disconnector for low-voltage power distribution.
• 1000 A rated current for high-current electrical installations.
• Four-pole configuration for three-phase systems requiring neutral switching.
• Withdrawable moving-part design for convenient isolation and switchgear maintenance.
• E2S/MS construction designed specifically for switching and disconnection duties.
• Suitable for use as an isolating device within coordinated low-voltage distribution systems.
• Part of the established ABB SACE New Emax range.

Key Features

• ABB SACE New Emax E2S/MS series.
• 1000 A rated current.
• Four-pole construction.
• Withdrawable version.
• Supplied as the moving part (MP) of the withdrawable switch-disconnector.
• Designed for low-voltage circuit switching and isolation.
• Suitable for integration into compatible ABB SACE Emax switchgear assemblies.
• Withdrawable construction supports servicing and maintenance without a permanently fixed switching unit.

Reliable Switching and Isolation for Power Distribution

Air switch-disconnectors such as the ABB SACE Emax E2S/MS provide a dependable means of switching and isolating high-current circuits within low-voltage distribution systems. Their primary role is to establish a reliable disconnection point so that downstream circuits or equipment can be isolated as part of an appropriately designed electrical installation.

The withdrawable E2S/MS configuration provides additional flexibility for switchboard operation and maintenance. The moving part can be withdrawn from its compatible fixed section, supporting clear isolation and easier servicing. Its four-pole construction allows the neutral conductor to be switched together with all three phase conductors where the electrical system design requires four-pole disconnection.

Typical Applications

• Main low-voltage electrical distribution switchboards.
• Industrial power distribution systems.
• Commercial building electrical infrastructure.
• Manufacturing and process plants.
• Switchboard isolation applications.
• High-current feeder switching.
• Withdrawable low-voltage switchgear assemblies.
• Four-pole distribution systems requiring neutral switching.