1SDA058884R1 ABB E3V/MS 1250 4P W MP Switch Disconnector 1250 A

Why Choose the ABB E3V/MS 1250 4P W MP Switch Disconnector?

The ABB E3V/MS 1250 4P W MP, order code 1SDA058884R1, is a heavy-duty SACE Emax air switch disconnector designed for high-current switching and isolation in low-voltage electrical distribution systems. Part of the proven ABB New Emax E3 series, this four-pole unit provides a rated uninterrupted current of 1250 A and is supplied as the moving part for a withdrawable switch-disconnector installation.

The E3V/MS 1250 combines ABB's withdrawable Emax construction with the high short-time withstand capability required in demanding industrial distribution systems. Its V performance level provides a rated short-time withstand current of 85 kA for 1 s and 65 kA for 3 s, supporting dependable operation in installations with substantial prospective fault currents.

With a rated operational voltage of up to 690 V AC, a rated insulation voltage of 1000 V and a rated impulse withstand voltage of 12 kV, the E3V/MS 1250 is engineered for robust industrial power distribution. Its four-pole withdrawable configuration allows the switching unit to be removed from its fixed cradle, simplifying inspection, servicing and replacement within suitably designed switchboards.

Key Advantages

• Heavy-duty 1250 A SACE Emax switch disconnector for industrial power distribution.
• Four-pole configuration provides simultaneous switching across four conductors.
• Withdrawable moving-part design supports efficient maintenance and switchboard servicing.
• Rated operational voltage up to 690 V AC.
• 85 kA short-time withstand current for 1 s for demanding electrical installations.
• High mechanical and electrical endurance for reliable long-term service.

Key Features

• ABB SACE Emax E3V/MS series.
• 1250 A rated uninterrupted current.
• Four-pole (4P) construction.
• Withdrawable (W) moving part (MP) configuration.
• 690 V AC rated operational voltage.
• 1000 V rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• V short-circuit performance level.
• Designed for integration with the corresponding SACE Emax fixed part.
• Designed in accordance with applicable IEC standards.

Reliable High-Current Isolation for Power Distribution

Switch disconnectors provide controlled switching and isolation of electrical circuits without incorporating the overcurrent protection functions of a conventional circuit breaker. The ABB E3V/MS is therefore suited to installations where protection is provided separately and a robust high-current device is required for operational switching, system segregation and maintenance isolation.

The withdrawable SACE Emax design is particularly valuable in critical distribution switchboards because the moving part can be withdrawn from its corresponding fixed section for inspection or maintenance. Combined with its four-pole configuration and high short-time withstand capability, the E3V/MS 1250 provides a practical solution for demanding industrial and infrastructure power systems.

Typical Applications

• Industrial low-voltage power distribution switchboards.
• Main incoming and distribution isolation.
• Withdrawable switchgear assemblies.
• Industrial plants and manufacturing facilities.
• Infrastructure and commercial power distribution systems.
• High-current feeder and busbar isolation.