1SDA073485R1 ABB E1.2N/MS 1600 3p WMP Switch Disconnector

Why Choose the ABB E1.2N/MS 1600 3p WMP Switch Disconnector?

The ABB E1.2N/MS 1600 3p WMP, order code 1SDA073485R1, 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 compact E1.2 frame, this /MS version provides a substantial 1600 A rated uninterrupted current for industrial, commercial and infrastructure switchboards.

The E1.2N/MS combines its high continuous-current capacity with a rated short-time withstand current of 50 kA. Its switch-disconnector design provides the main switching and isolation function required in distribution assemblies, while appropriately coordinated protective equipment provides automatic overload and short-circuit protection.

This model is supplied as the withdrawable moving part (WMP) of the Emax 2 switch-disconnector system. Its three-pole construction, 690 V AC rated operational voltage and withdrawable architecture make it particularly suitable for switchboards where maintainability, service continuity and straightforward removal of the switching unit are important.

Key Advantages

• High-capacity 1600 A three-pole air switch disconnector.
• 50 kA rated short-time withstand current for demanding low-voltage distribution systems.
• Withdrawable moving-part design supports servicing and switchboard maintenance.
• 690 V AC rated operational voltage for industrial power networks.
• 1600 A AC-21 and AC-23 ratings at 400 V.
• Compact E1.2 frame provides high current capacity within space-conscious switchboard designs.
• Optional motor drive and voltage release functionality supported by the Emax 2 platform.

Key Features

• ABB SACE Emax 2 E1.2N/MS switch disconnector.
• 1600 A rated uninterrupted current (Iu).
• Three-pole configuration.
• 50 kA rated short-time withstand current (Icw).
• 690 V AC rated operational voltage (Ue).
• 1600 A rated current for AC-21 duty at 400 V.
• 1600 A rated current for AC-23 duty at 400 V.
• Withdrawable moving part (WMP) configuration.
• Bolt-connected main circuit interface.
• IP30 front-side protection.
• Interlockable construction for controlled switchboard operation.
• Optional motor operator and voltage release.

Reliable Withdrawable Isolation for Power Distribution

ABB Emax 2 /MS switch disconnectors are designed for controlled switching and electrical isolation within low-voltage distribution systems. The E1.2N/MS provides the switching function without relying on an automatic overcurrent trip unit, allowing it to be coordinated with dedicated protective devices elsewhere in the installation.

The withdrawable construction of the E1.2N/MS enables the moving switching unit to be separated from its fixed switchboard part, supporting maintenance and replacement strategies in installations where serviceability is important. Combined with its 1600 A current rating and 50 kA short-time withstand capability, this makes the 1SDA073485R1 well suited to substantial industrial and commercial distribution systems.

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.