1SDA073541R1 ABB E4.2N/MS 3200 4p WMP Emax 2 Switch Disconnector 3200 A

Why Choose the ABB E4.2N/MS 3200 4p WMP Emax 2 Switch Disconnector?

The ABB E4.2N/MS 3200 4p WMP, order code 1SDA073541R1, is a high-performance four-pole air switch disconnector from the ABB SACE Emax 2 range, designed for switching and isolation duties in demanding low-voltage electrical distribution systems. Built on the E4.2 frame, this withdrawable moving part provides a 3200 A rated uninterrupted current for industrial, commercial, infrastructure and critical-power installations.

As part of the advanced ABB SACE Emax 2 family, the E4.2N/MS combines substantial current capacity with robust short-time withstand performance. Its N performance level provides a rated short-time withstand current of 66 kA for 1 s and 50 kA for 3 s, making it suitable for installations where high prospective fault currents and dependable electrical isolation must be accommodated.

The E4.2N/MS 3200 4p WMP is a withdrawable four-pole moving part with a rated operational voltage of up to 690 V AC. Its neutral pole is rated at 100% of Iu, supporting four-pole distribution systems where the neutral must be switched alongside the three phase conductors, while its withdrawable construction facilitates inspection, servicing and replacement within compatible ABB Emax 2 switchgear.

Key Advantages

• High-capacity 3200 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.
• Optional motor drive and voltage release provide flexibility for automated switching systems.
• Robust ABB Emax 2 construction for industrial and critical power distribution applications.

Key Features

• ABB SACE Emax 2 E4.2N/MS series.
• 3200 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.
• 7000 electrical operating cycles.
• 20,000 mechanical operating cycles.
• Withdrawable moving-part construction with bolt-connected main circuit.
• IP30 front-side protection.

Reliable High-Current Four-Pole Switching and Isolation

Switch disconnectors such as the ABB E4.2N/MS provide controlled switching and dependable isolation of electrical circuits in low-voltage distribution systems. With a rated uninterrupted current of 3200 A and a four-pole configuration, this model is well suited to substantial three-phase distribution systems where switching of the neutral conductor is also required.

The Emax 2 platform is designed for modern switchboards where high current capacity, robust short-time withstand performance and maintainability are important. The withdrawable E4.2N/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.
• High-current four-pole power distribution systems.
• Main incoming and distribution switchboards.
• Large 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.