1SDA073396R1 ABB E1.2B/MS 1000 3p F F Switch-Disconnector

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

The ABB E1.2B/MS 1000 3p F F, order code 1SDA073396R1, is a SACE Emax 2 air switch-disconnector designed for reliable high-current switching and isolation in low-voltage electrical distribution systems. This E1.2B/MS model has a 1000 A rated uninterrupted current, three poles, fixed construction and front terminals.

As an Emax 2 switch-disconnector, the E1.2B/MS is intended for switching and isolation rather than providing the electronic protection functions associated with Ekip-equipped Emax 2 circuit breakers. It is therefore well suited to installations where the required overcurrent protection is provided by other coordinated protective devices and a robust main switching or isolation point is required.

The E1.2B/MS 1000 supports operation at up to 690 V AC, with a rated insulation voltage of 1000 V AC and rated impulse withstand voltage of 12 kV. Its short-time withstand capability is 42 kA for 1 s and 24 kA for 3 s, supporting use in demanding industrial and commercial low-voltage switchgear.

Key Advantages

• 1000 A rated uninterrupted current for high-current low-voltage distribution systems.
• E1.2B/MS switch-disconnector configuration provides dependable switching and circuit isolation.
• Three-pole construction for three-phase electrical distribution applications.
• Fixed installation provides a straightforward permanent switchboard solution.
• Front terminal connections simplify integration into compatible switchgear assemblies.
• 42 kA short-time withstand current for 1 s supports demanding distribution applications.
• Suitable for rated operational voltages up to 690 V AC.

Key Features

• ABB SACE Emax 2 E1.2B/MS series.
• 1000 A rated current.
• 3-pole configuration.
• Fixed version.
• Front terminal connection.
• Switch-disconnector functionality for switching and isolation.
• 690 V AC rated operational voltage.
• 1000 V AC rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 42 kA rated short-time withstand current for 1 s.
• 24 kA rated short-time withstand current for 3 s.
• 8000 electrical operating cycles at voltages up to 440 V.
• 6500 electrical operating cycles at 500–690 V.
• 20000 mechanical operating cycles.

Reliable 1000 A Switching and Circuit Isolation

The ABB SACE Emax 2 E1.2B/MS is designed to provide controlled switching and isolation of high-current low-voltage circuits. Its switch-disconnector configuration provides a dedicated means of disconnecting a circuit while allowing the required overcurrent and fault protection to be coordinated elsewhere within the electrical distribution system.

With a 1000 A current rating, operation up to 690 V AC and short-time withstand capability of 42 kA for 1 s, the E1.2B/MS 1000 provides a robust solution for industrial and commercial switchboards. The fixed construction and front terminals make it particularly suitable for permanent switchgear installations where withdrawable functionality is not required.

Typical Applications

• Main switching and isolation in low-voltage distribution switchboards.
• Industrial power-distribution systems.
• High-current three-phase circuit isolation.
• Transformer secondary distribution assemblies.
• Commercial and infrastructure electrical installations.
• Switchgear assemblies where circuit protection is provided by coordinated protective devices elsewhere in the system.