1SDA073523R1 ABB E1.2B/MS 1600 4p WMP Switch-Disconnector 1600 A

Why Choose the ABB E1.2B/MS 1600 4p WMP Switch-Disconnector?

The ABB E1.2B/MS 1600 4p WMP, order code 1SDA073523R1, is a high-performance four-pole switch-disconnector from the ABB SACE Emax 2 range, designed for dependable switching and isolation in low-voltage electrical distribution systems. Supplied as the moving part of a withdrawable assembly, this E1.2 frame device provides a 1600 A rated uninterrupted current in a compact format suitable for demanding industrial, commercial and infrastructure switchboards.

As an Emax 2 /MS switch-disconnector, the E1.2B/MS is designed to satisfy isolation requirements while providing the mechanical and installation flexibility associated with ABB's Emax 2 platform. Its withdrawable configuration enables the moving part to be separated from the compatible fixed part, supporting efficient inspection, servicing and maintenance of electrical distribution equipment.

With a rated operational voltage of 690 V AC, a rated insulation voltage of 1000 V AC and a 42 kA short-time withstand current for 1 s, the E1.2B/MS 1600 is suitable for demanding low-voltage applications. Its four-pole configuration enables simultaneous switching and isolation of all four conductors in appropriate three-phase distribution systems.

Key Advantages

• Compact ABB SACE Emax 2 switch-disconnector for low-voltage power distribution.
• 1600 A rated uninterrupted current for high-current applications.
• Four-pole configuration for applications requiring four-pole switching and isolation.
• 42 kA short-time withstand current for 1 s.
• Withdrawable moving-part design supports efficient switchboard servicing and maintenance.
• Designed for operation at up to 690 V AC.

Key Features

• ABB SACE Emax 2 E1.2B/MS series.
• 1600 A rated uninterrupted current (Iu).
• Four-pole construction.
• 690 V AC rated operational voltage (Ue).
• 1000 V AC rated insulation voltage (Ui).
• 42 kA rated short-time withstand current (Icw) for 1 s.
• 24 kA rated short-time withstand current (Icw) for 3 s.
• AC-23A utilisation category.
• 50 / 60 Hz rated frequency.
• Withdrawable moving-part (WMP) configuration.

Reliable Four-Pole Switching and Isolation

Switch-disconnectors provide a dependable means of switching and electrically isolating circuits within low-voltage power distribution systems. The ABB E1.2B/MS 1600 is derived from the Emax 2 platform and is designed specifically for switching and isolation duties, providing the contact separation required for isolation when the device is in its open position.

The four-pole configuration is particularly useful in distribution systems where switching of the neutral conductor together with the three phase conductors is required. Combined with the withdrawable Emax 2 architecture, this provides a flexible solution for switchboards where reliable isolation, high current capacity and straightforward maintenance are important.

Typical Applications

• Main low-voltage power distribution switchboards.
• Three-phase and neutral electrical distribution systems.
• Industrial manufacturing and process facilities.
• Commercial and infrastructure electrical installations.
• Main switching and circuit isolation applications.
• Withdrawable switchgear and power distribution assemblies.