1SDA073478R1 ABB E1.2B/MS 800 3p WMP Switch-Disconnector 800 A

Why Choose the ABB E1.2B/MS 800 3p WMP Switch-Disconnector?

The ABB E1.2B/MS 800 3p WMP, order code 1SDA073478R1, is a high-performance three-pole switch-disconnector from the ABB SACE Emax 2 range, designed for isolation and switching duties in low-voltage electrical distribution systems. This E1.2 frame device is supplied as the moving part of a withdrawable switch-disconnector, providing a practical solution for industrial switchboards and power distribution assemblies.

Designed for demanding electrical installations, the E1.2B/MS combines an 800 A rated uninterrupted current with the compact architecture of the Emax 2 platform. Its withdrawable construction supports efficient switchboard operation and maintenance by allowing the moving part to be disconnected from the associated fixed part.

The E1.2B/MS 800 is rated for operation at up to 690 V AC and provides a 42 kA short-time withstand current for 1 s. Its three-pole configuration makes it suitable for three-phase low-voltage distribution systems where dependable switching and circuit isolation are required.

Key Advantages

• Part of the proven ABB SACE Emax 2 low-voltage switching platform.
• 800 A rated uninterrupted current for high-current distribution applications.
• Three-pole configuration for three-phase electrical systems.
• Withdrawable moving-part design supports convenient switchboard operation and maintenance.
• 42 kA short-time withstand current for 1 s for demanding distribution environments.
• Suitable for electrical systems operating at up to 690 V AC.

Key Features

• ABB SACE Emax 2 E1.2B/MS series.
• 800 A rated uninterrupted current (Iu).
• Three-pole construction.
• 690 V AC rated operational voltage.
• 42 kA Icw for 1 s.
• 24 kA Icw for 3 s.
• 12 kV rated impulse withstand voltage (Uimp).
• 1000 V AC rated insulation voltage (Ui).
• Withdrawable moving-part (WMP) configuration.
• Designed for low-voltage power distribution, switching and isolation applications.

Reliable Switching and Isolation for Power Distribution

Switch-disconnectors provide a dependable means of switching and isolating electrical circuits, helping operators and maintenance personnel safely separate sections of a low-voltage distribution system when required. The ABB Emax 2 platform is engineered for use in modern electrical switchboards where reliability, compact dimensions and flexible system integration are important.

The withdrawable E1.2B/MS design is particularly well suited to installations where serviceability and operational flexibility are priorities. The moving part can be withdrawn from its associated fixed part, simplifying isolation and helping minimise disruption during inspection, maintenance and switchboard servicing.

Typical Applications

• Low-voltage power distribution switchboards.
• Industrial electrical distribution systems.
• Commercial and infrastructure power installations.
• Main and secondary electrical isolation duties.
• Motor control centres and industrial switchgear assemblies.
• Power distribution systems requiring withdrawable switching devices.