1SDA059212R1 ABB E1B/MS 1000A 4-Pole Withdrawable Switch Disconnector Moving Part

Why Choose the ABB 1SDA059212R1 E1B/MS 1000 Switch Disconnector?

The ABB 1SDA059212R1 is a SACE Emax E1B/MS 1000 switch-disconnector moving part designed for high-current switching and isolation in low-voltage electrical distribution systems. Rated at 1000 A, this four-pole unit combines ABB's E1 frame with a withdrawable configuration for integration into compatible SACE Emax switchgear.

As part of the ABB SACE Emax platform, the E1B/MS is a switch-disconnector rather than a conventional overcurrent-protection circuit breaker. The 1SDA059212R1 is supplied as the withdrawable moving part (W MP), allowing it to be inserted into and removed from the corresponding compatible fixed part for servicing, inspection and switchboard maintenance.

With a rated uninterrupted current of 1000 A, rated operational voltage up to 690 V AC and 250 V DC, and a four-pole configuration, the 1SDA059212R1 provides a robust isolation solution for substantial industrial and commercial low-voltage distribution systems.

Key Advantages

• 1000 A rated current for high-current low-voltage distribution systems.
• Four-pole configuration for applications requiring switching and isolation across four conductors.
• Withdrawable moving-part construction supports inspection, servicing and switchboard maintenance.
• Purpose-designed switch-disconnector for switching and electrical isolation applications.
• 690 V AC and 250 V DC rated operational voltage provides application flexibility.
• 42 kA short-time withstand current for 1 s for demanding switchgear installations.
• Part of the established ABB SACE Emax E1B/MS platform.
• Designed for integration with the corresponding ABB SACE Emax withdrawable switchgear assembly.

Key Features

• ABB SACE Emax E1B/MS 1000 switch disconnector.
• 1000 A rated current (In).
• Four-pole construction.
• Withdrawable version.
• Supplied as the moving part (MP).
• 690 V AC rated operational voltage.
• 250 V DC rated operational voltage.
• 1000 V rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 42 kA rated short-time withstand current for 1 s.
• Mechanical durability of 25,000 cycles.
• Designed in accordance with applicable IEC requirements.

High-Current Switching and Isolation with SACE Emax

Switch disconnectors provide switching and isolation functions within electrical distribution systems, allowing circuits or sections of an installation to be disconnected when required. Unlike an air circuit breaker fitted with an electronic overcurrent release, the E1B/MS configuration is intended primarily as a switch-disconnector and should be applied with the appropriate upstream or system protection required by the installation.

The ABB SACE Emax E1B/MS platform combines this isolation function with a high-current withdrawable design. The 1000 A rating, four-pole construction and short-time withstand capability of the 1SDA059212R1 make it suitable for demanding distribution switchboards, while the removable moving-part arrangement supports maintainability within compatible SACE Emax assemblies.

Typical Applications

• Main low-voltage distribution switchboards.
• High-current electrical isolation applications.
• Industrial power distribution systems.
• Manufacturing and process plant switchgear.
• Commercial and infrastructure electrical distribution.
• Busbar and distribution section isolation.
• Withdrawable low-voltage switchgear installations.
• OEM switchboard and power distribution assemblies.