1SDA059428R1 ABB E3S/MS 1000 1000A 4-Pole Withdrawable Switch-Disconnector

Why Choose the ABB E3S/MS 1000 4-Pole Withdrawable Switch-Disconnector?

The ABB E3S/MS 1000, order code 1SDA059428R1, is a heavy-duty 1000 A four-pole withdrawable switch-disconnector moving part from the ABB SACE Emax range. Designed for high-current low-voltage switching and isolation, it provides a robust means of making, carrying and isolating circuits in industrial, commercial and infrastructure power distribution systems.

Unlike an Emax circuit breaker fitted with a PR electronic trip unit, the E3S/MS is a switch-disconnector. Its primary function is switching and isolation rather than automatic overload and short-circuit protection, so appropriate external protective devices must be incorporated into the electrical system where overcurrent protection is required.

This model has a rated uninterrupted current of 1000 A, a four-pole configuration and the E3S performance class. It is supplied as the moving part (MP) of a withdrawable assembly, allowing removal from the corresponding fixed part for maintenance, inspection or replacement without the permanent main connections having to be dismantled.

Key Advantages

• Heavy-duty 1000 A switch-disconnector for high-current power distribution.
• Four-pole configuration supports simultaneous switching and isolation of three phases and neutral.
• Withdrawable moving-part construction supports efficient servicing and replacement.
• Designed specifically for switching and circuit isolation.
• E3S performance class provides substantial short-time withstand capability.
• 75 kA short-time withstand current for 1 s.
• Part of the established ABB SACE Emax low-voltage switching platform.
• Suitable for integration into compatible ABB Emax switchboards and power distribution assemblies.

Key Features

• ABB SACE Emax E3S/MS switch-disconnector.
• 1000 A rated uninterrupted current.
• Four-pole construction.
• Withdrawable version / moving part (W MP).
• Designed for high-current switching and isolation.
• No PR electronic overcurrent trip unit required for its switch-disconnector function.
• 75 kA rated short-time withstand current for 1 s.
• Moving part designed for use with the corresponding ABB SACE Emax fixed part.
• Service-friendly construction for switchboard maintenance.
• Suitable for industrial, commercial and infrastructure distribution systems.

Reliable Switching and Isolation for Power Distribution

Switch-disconnectors are used where a high-current circuit must be switched and positively isolated without requiring an integral electronic overcurrent trip unit. The ABB SACE Emax E3S/MS provides a robust switching platform for distribution systems where overload and short-circuit protection is provided separately by upstream or downstream protective equipment.

The withdrawable construction enables the E3S/MS moving part to be disconnected and removed from its compatible fixed assembly, supporting inspection, servicing and replacement in switchboard applications. Combined with its 1000 A current rating, four-pole configuration and 75 kA one-second short-time withstand capability, this makes the unit suitable for demanding high-current switching and isolation duties.

Typical Applications

• Low-voltage main distribution switchboards.
• Industrial power distribution systems.
• Three-phase four-wire distribution systems.
• Commercial building electrical distribution.
• Manufacturing and process plant switchgear.
• Main incoming and outgoing circuit isolation.
• Busbar and high-current feeder switching.
• Power distribution panels and switchgear assemblies.
• Infrastructure and utility installations.
• Systems using separate overcurrent protective devices.