1SDA058864R1 ABB E1N/MS 1600 4-Pole Withdrawable Switch Disconnector Moving Part

Why Choose the ABB E1N/MS 1600 4-Pole Switch Disconnector?

The ABB E1N/MS 1600, order code 1SDA058864R1, is a SACE Emax switch disconnector moving part designed for dependable isolation and switching in low-voltage power-distribution systems. This model has a 1600 A rated current, four-pole configuration and an E1 frame with ABB's N short-circuit performance level.

The W MP designation identifies the 1SDA058864R1 as the moving part of a withdrawable SACE Emax switch-disconnector installation. It is intended for use with the appropriate compatible fixed part, providing a practical solution for switchboards where circuit isolation, servicing and equipment replacement are important operational requirements.

Rated for operation up to 690 V AC, the E1N/MS 1600 provides a 50 kA short-time withstand current for 1 s and 36 kA for 3 s. Its switch-disconnector construction is intended for switching and isolation rather than overcurrent protection, making it suitable for applications where circuit protection is provided separately within the electrical system.

Key Advantages

• 1600 A rated current for high-current low-voltage distribution applications.
• Four-pole construction enables simultaneous switching of three phases and neutral.
• Withdrawable moving-part design supports maintainable and serviceable switchboard installations.
• 690 V AC rated operational voltage suits a broad range of industrial distribution systems.
• 50 kA short-time withstand current for 1 s provides substantial fault-current withstand capability.
• 36 kA short-time withstand current for 3 s supports coordinated low-voltage distribution designs.
• 1000 V insulation voltage and 12 kV impulse withstand voltage support robust electrical insulation performance.
• ABB SACE Emax construction provides compatibility with the established E1 switchboard platform.

Key Features

• ABB SACE Emax E1N/MS switch disconnector.
• 1600 A rated current.
• Four-pole configuration.
• Withdrawable moving part (W MP) execution.
• N short-circuit performance level.
• 690 V AC / 250 V DC rated operational voltage.
• 1000 V rated insulation voltage (Ui).
• 12 kV rated impulse withstand voltage (Uimp).
• 50 kA short-time withstand current for 1 s.
• 36 kA short-time withstand current for 3 s.
• 25,000-cycle mechanical durability.
• 10,000-cycle electrical durability.
• Designed for IEC applications.

Reliable High-Current Switching and Isolation

Unlike an Emax circuit breaker equipped with an electronic protection release, the E1N/MS is configured as a switch disconnector. Its primary role is circuit switching and isolation, so any required overload, short-circuit or earth-fault protection must be provided by appropriately selected protective devices elsewhere in the installation.

The 1SDA058864R1 combines its 1600 A continuous-current capability with substantial short-time withstand performance and a withdrawable moving-part format. This makes it particularly suitable for high-current switchboards where positive circuit isolation, four-pole switching and straightforward maintenance access are required within the SACE Emax architecture.

Typical Applications

• Withdrawable low-voltage main distribution switchboards.
• High-current industrial circuit isolation.
• Main and feeder switching applications.
• Manufacturing and process plant electrical systems.
• Commercial building power distribution.
• Infrastructure and utility distribution installations.
• Four-pole systems requiring neutral switching.
• Applications where overcurrent protection is provided separately from the switch disconnector.