1SDA073397R1 ABB E1.2N/MS 1000 3p F F Switch Disconnector

Why Choose the ABB E1.2N/MS 1000 3p F F Switch Disconnector?

The ABB E1.2N/MS 1000 3p F F, order code 1SDA073397R1, is a SACE Emax 2 switch disconnector designed for dependable isolation and switching in low-voltage electrical distribution systems. Built on ABB's compact E1.2 platform, this fixed three-pole device provides a 1000 A rated uninterrupted current and is suitable for industrial, commercial and infrastructure switchboards requiring robust high-current switching without an integral overcurrent protection trip unit.

The E1.2N/MS configuration is a switch disconnector rather than a protective circuit breaker, making it suitable for applications where circuit protection is provided separately and a reliable means of switching and isolation is required. The device features fixed installation with front terminals and supports optional accessories, including a motor operator and voltage releases, for integration into different switchboard control schemes.

Rated for operation at up to 690 V AC, with a 1000 V AC insulation voltage, 12 kV impulse withstand voltage and 50 kA short-time withstand current for 1 s, the E1.2N/MS 1000 is engineered for demanding low-voltage distribution environments. Its compact fixed construction helps provide reliable high-current isolation while minimising switchboard space requirements.

Key Advantages

• 1000 A rated uninterrupted current for high-current low-voltage distribution systems.
• Three-pole switch disconnector for three-phase switching and isolation applications.
• 50 kA short-time withstand current for 1 s for demanding electrical networks.
• Rated for operation at up to 690 V AC.
• Fixed installation provides a compact and straightforward switchboard configuration.
• Front terminals simplify integration into compatible switchboard layouts.
• Optional motor operation supports electrically controlled switching applications.

Key Features

• ABB SACE Emax 2 E1.2N/MS switch disconnector.
• 1000 A rated current.
• Three-pole configuration.
• Fixed installation.
• Front terminals.
• 690 V AC rated operational voltage.
• 1000 V AC rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 50 kA rated short-time withstand current for 1 s.
• Rated for 1000 A AC-23 duty at 400 V.
• Rated for 1000 A AC-21 duty at 400 V.
• Optional motor drive available.
• Compact E1.2 frame for low-voltage switchboard integration.

Reliable High-Current Switching and Isolation

Switch disconnectors provide a dependable means of making, carrying and isolating electrical circuits while circuit protection is handled by separate protective equipment. In high-current low-voltage switchboards, they are commonly used where operators require a robust isolation point without the integral electronic protection functions of an air circuit breaker.

The ABB E1.2N/MS 1000 combines a 1000 A continuous-current rating with a 50 kA short-time withstand capability and compact E1.2 construction. Its fixed three-pole configuration and front terminals make it suitable for main isolation, feeder switching and other applications where dependable high-current switching is required within an Emax 2-based electrical distribution system.

Typical Applications

• Main switchboard isolation.
• Industrial low-voltage distribution systems.
• High-current feeder switching and isolation.
• Commercial building electrical distribution.
• Manufacturing and process plant switchboards.
• Infrastructure and utility distribution panels.