1SDA073529R1 ABB E2.2N/MS 1250 4p WMP Emax 2 Switch Disconnector 1250 A

Why Choose the ABB E2.2N/MS 1250 4p WMP Emax 2 Switch Disconnector?

The ABB E2.2N/MS 1250 4p WMP, order code 1SDA073529R1, is a high-performance four-pole air switch disconnector from the ABB SACE Emax 2 range, designed for switching and isolation duties in low-voltage electrical distribution systems. Built on the E2.2 frame, this withdrawable moving part provides a 1250 A rated uninterrupted current for industrial, commercial and infrastructure power distribution applications.

As part of the advanced ABB SACE Emax 2 family, the E2.2N/MS combines robust electrical performance with high mechanical and electrical endurance. Its N performance level provides a rated short-time withstand current of 66 kA for 1 s and 50 kA for 3 s, supporting dependable operation in installations where substantial fault-current withstand capability and secure electrical isolation are required.

The E2.2N/MS 1250 4p WMP is a withdrawable four-pole moving part with a rated operational voltage of up to 690 V AC. Its four-pole configuration provides a neutral pole rated at 100% of the uninterrupted current, while the withdrawable construction facilitates inspection, servicing and replacement within compatible ABB Emax 2 switchgear.

Key Advantages

• High-performance 1250 A four-pole switch disconnector for low-voltage power distribution.
• 66 kA short-time withstand current for 1 s for demanding electrical installations.
• 50 kA short-time withstand current for 3 s.
• Rated operational voltage up to 690 V AC.
• Four-pole configuration with 100% rated neutral pole.
• Withdrawable moving-part construction supports convenient inspection and maintenance.
• High electrical and mechanical durability for dependable long-term operation.
• Robust ABB Emax 2 construction for industrial and critical power distribution systems.

Key Features

• ABB SACE Emax 2 E2.2N/MS series.
• 1250 A rated uninterrupted current (Iu).
• Four-pole configuration.
• 100% neutral pole current rating.
• 690 V AC rated operational voltage (Ue).
• 1000 V AC rated insulation voltage (Ui).
• 12 kV rated impulse withstand voltage (Uimp).
• 66 kA for 1 s rated short-time withstand current (Icw).
• 50 kA for 3 s short-time withstand current.
• 15,000 electrical operating cycles at rated operational voltages up to 690 V.
• 25,000 mechanical operating cycles.
• Withdrawable moving-part construction for compatible Emax 2 switchgear.

Reliable Four-Pole Switching and Isolation

Switch disconnectors such as the ABB E2.2N/MS provide controlled switching and dependable isolation of electrical circuits in low-voltage distribution systems. The four-pole configuration allows all three phase conductors and the neutral to be incorporated into the switching device, with the neutral pole on this model rated at 100% of Iu.

The Emax 2 platform is designed for modern switchboards where high current capacity, strong short-time withstand performance and maintainability are important. The withdrawable E2.2N/MS moving part can be disconnected and removed from its compatible fixed section, helping simplify inspection, servicing and replacement in industrial and critical power distribution installations.

Typical Applications

• Industrial low-voltage switchboards.
• Four-pole power distribution systems.
• Main incoming and distribution switchboards.
• Commercial building electrical distribution.
• Manufacturing and process industry installations.
• Power isolation and switching applications.
• Infrastructure and critical-power distribution systems.
• Installations requiring four-pole switching with a full-rated neutral.