1SDA073475R1 ABB E1.2N/MS 250 3p WMP Switch-Disconnector

Why Choose the ABB E1.2N/MS 250 3p WMP Switch-Disconnector?

The ABB E1.2N/MS 250 3p WMP, order code 1SDA073475R1, is a three-pole withdrawable air switch-disconnector moving part designed for switching and isolation duties in low-voltage power distribution systems. As part of the ABB SACE Emax 2 E1.2 series, it combines a rated uninterrupted current of 250 A with a compact withdrawable architecture for industrial, commercial and infrastructure switchboards.

This E1.2N/MS configuration is the moving part of a withdrawable switch-disconnector, allowing the device to be inserted into and removed from the corresponding Emax 2 fixed part. The withdrawable arrangement simplifies inspection, maintenance and replacement while supporting dependable circuit isolation within modern low-voltage switchgear assemblies.

With a rated operational voltage of up to 690 V AC and a rated short-time withstand current of 50 kA for 1 s, the E1.2N/MS 250 provides robust electrical performance for distribution applications requiring a compact three-pole switch-disconnector with withdrawable functionality.

Key Advantages

• Compact 250 A air switch-disconnector for low-voltage distribution systems.
• Three-pole configuration for three-phase switching and isolation.
• Withdrawable moving-part design supports convenient maintenance and replacement.
• Rated operational voltage up to 690 V AC.
• Rated short-time withstand current of 50 kA for 1 s.
• Interlockable construction for integration into switchgear assemblies.
• Optional motor operator and voltage release capabilities support flexible system configuration.
• Part of ABB's established SACE Emax 2 low-voltage distribution platform.

Key Features

• ABB SACE Emax 2 E1.2N/MS series.
• 250 A rated uninterrupted current.
• Three-pole switching configuration.
• 690 V AC maximum rated operational voltage.
• 50 kA rated short-time withstand current for 1 s.
• Withdrawable moving part for use with the corresponding Emax 2 fixed part.
• Main-circuit bolt connection arrangement.
• IP30 front-side protection.
• Motor operator and voltage release available as optional accessories.

Reliable Withdrawable Switching and Isolation

Air switch-disconnectors provide a dependable means of switching and electrically isolating sections of low-voltage power distribution systems. The withdrawable construction of the ABB E1.2N/MS allows the moving part to be separated from its fixed switchboard section, supporting maintenance and servicing while retaining the robust switching architecture of the Emax 2 platform.

The E1.2N/MS 250 combines a 250 A current rating with 50 kA for 1 s short-time withstand capability. Its three-pole configuration makes it suitable for three-phase distribution systems where dependable switching, isolation and maintainable switchgear construction are required.

Typical Applications

• Low-voltage main and sub-distribution switchboards.
• Industrial three-phase power distribution systems.
• Commercial and infrastructure electrical installations.
• Switchboards requiring withdrawable isolation devices.
• Manufacturing and process plant distribution systems.
• Electrical assemblies where maintainability and device replacement are important.