1SDA073486R1 ABB E2.2N/MS 800 3p WMP Switch Disconnector

Why Choose the ABB E2.2N/MS 800 3p WMP Switch Disconnector?

The ABB E2.2N/MS 800 3p WMP, order code 1SDA073486R1, is a high-performance three-pole withdrawable air switch disconnector from the ABB SACE Emax 2 range, designed for dependable switching and isolation in low-voltage power distribution systems. Built on the E2.2 frame, this /MS version provides an 800 A rated uninterrupted current and combines robust electrical performance with the serviceability of a withdrawable switchboard design.

The E2.2N/MS provides a rated short-time withstand current of 66 kA, enabling it to withstand demanding fault-current conditions while appropriately coordinated protective equipment provides automatic circuit protection. Emax 2 /MS switch disconnectors are derived from the corresponding air circuit breakers but omit the protection trip unit, providing dedicated switching and isolation functionality in accordance with IEC 60947-3.

This model is supplied as a withdrawable moving part (WMP) with a three-pole configuration. It supports a rated operational voltage of up to 690 V AC, while its withdrawable architecture makes it particularly suitable for switchboards where maintainability, service continuity and straightforward removal of the switching unit are important.

Key Advantages

• High-performance 800 A three-pole air switch disconnector.
• 66 kA rated short-time withstand current for demanding low-voltage distribution systems.
• Withdrawable moving-part design supports servicing and switchboard maintenance.
• 690 V AC maximum rated operational voltage for industrial power networks.
• 800 A AC-21 and AC-23 ratings at 400 V.
• Compact and robust E2.2 frame for modern low-voltage switchboards.
• Optional motor operator and voltage release functionality supported by the Emax 2 platform.

Key Features

• ABB SACE Emax 2 E2.2N/MS switch disconnector.
• 800 A rated uninterrupted current (Iu).
• Three-pole configuration.
• 66 kA rated short-time withstand current (Icw).
• 690 V AC maximum rated operational voltage (Ue).
• 1000 V rated insulation voltage (Ui).
• 12 kV rated impulse withstand voltage (Uimp).
• 50–60 Hz operating frequency.
• 800 A rated current for AC-21 duty at 400 V.
• 800 A rated current for AC-23 duty at 400 V.
• Withdrawable moving part (WMP) configuration.
• Bolt-connected main circuit interface.
• IP30 front-side protection.

Reliable Withdrawable Isolation for Power Distribution

ABB SACE Emax 2 /MS switch disconnectors are designed specifically for switching and electrical isolation duties. They are derived from the corresponding Emax 2 automatic circuit breakers and retain the same dimensional platform and accessory possibilities, but do not incorporate the protection trip units used for automatic overcurrent protection.

The withdrawable architecture allows the E2.2N/MS moving part to be separated from the corresponding fixed portion of the switchboard installation, supporting maintenance and equipment servicing. Combined with its 800 A continuous-current rating and 66 kA short-time withstand capability, the 1SDA073486R1 is well suited to industrial and commercial distribution systems requiring dependable isolation and a serviceable switchgear architecture.

Typical Applications

• Low-voltage main distribution switchboards.
• Industrial power distribution systems.
• Commercial building electrical distribution.
• Incoming and outgoing isolation duties.
• Transformer secondary distribution systems.
• Generator and standby power installations.
• Manufacturing and process plant switchgear.
• Withdrawable switchboard assemblies requiring serviceable switching devices.