1SDA059254R1 ABB E1N/MS 1000 A 3-Pole Withdrawable Switch Disconnector

Why Choose the ABB 1SDA059254R1 E1N/MS 1000 Switch Disconnector?

The ABB 1SDA059254R1 is a robust SACE Emax E1N/MS 1000 switch disconnector designed for high-current switching and isolation in low-voltage power distribution systems. Identified as E1N/MS 1000 3p W MP new, it combines a 1000 A rated current, three-pole construction and withdrawable moving-part configuration for demanding industrial and commercial switchgear.

As part of the ABB SACE Emax range, the E1N/MS provides dependable circuit switching and isolation without the electronic overcurrent protection release fitted to automatic Emax circuit breakers. The E1N performance level provides a rated short-time withstand current of 50 kA for 1 s, making this switch disconnector suitable for high-current distribution assemblies where robust short-time withstand capability is required.

The 1SDA059254R1 is supplied as a three-pole withdrawable moving part (W/MP) for use with the corresponding Emax fixed part. It has a rated uninterrupted current of 1000 A, a rated operational voltage of up to 690 V AC and a rated insulation voltage of 1000 V, providing a flexible isolation solution for industrial switchboards and power distribution systems.

Key Advantages

• Heavy-duty 1000 A E1N/MS switch disconnector for low-voltage distribution.
• Three-pole configuration suitable for three-phase electrical systems.
• Withdrawable moving-part construction supports convenient switchboard servicing and maintenance.
• Rated operational voltage up to 690 V AC.
• 50 kA short-time withstand current for 1 s for demanding distribution applications.
• Provides reliable switching and electrical isolation of high-current circuits.
• Part of the proven ABB SACE Emax low-voltage switching platform.

Key Features

• ABB SACE Emax E1N/MS switch disconnector.
• 1000 A rated current.
• Three-pole construction.
• Withdrawable (W) execution.
• Moving part (MP) configuration.
• 690 V AC rated operational voltage.
• 1000 V rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 50 kA rated short-time withstand current for 1 s.
• 36 kA rated short-time withstand current for 3 s.
• Designed for switching and isolation in industrial low-voltage distribution equipment.

Reliable Isolation for Low-Voltage Power Distribution

Switch disconnectors are used to switch and isolate electrical circuits so that sections of a low-voltage installation can be safely separated from the supply when required. The ABB SACE Emax E1N/MS combines a high continuous current rating with substantial short-time withstand capability, making it suitable for demanding distribution systems where dependable high-current isolation is essential.

The withdrawable moving-part design of the 1SDA059254R1 provides additional flexibility for switchboard operation and maintenance. When installed with the corresponding Emax fixed part, the moving assembly can be withdrawn from its service position, supporting inspection, servicing and replacement while retaining the permanent switchboard connections.

Typical Applications

• Low-voltage main distribution switchboards.
• Industrial power distribution systems.
• Commercial and infrastructure electrical distribution.
• Manufacturing and process plant switchgear.
• High-current feeder switching and isolation.
• Withdrawable switchgear requiring maintainable isolation devices.