1SDA058866R1 ABB E2S/MS 1250 1250A 4-Pole Fixed Switch-Disconnector

Why Choose the ABB E2S/MS 1250 4-Pole Switch-Disconnector?

The ABB E2S/MS 1250 is a robust 1250 A four-pole switch-disconnector designed for switching and isolation in demanding low-voltage electrical distribution systems. As part of the proven ABB SACE Emax E2 series, this fixed switch-disconnector provides dependable high-current isolation for industrial, commercial and infrastructure power-distribution installations.

Unlike an Emax circuit breaker equipped with an electronic protection release, the E2S/MS is a switch-disconnector intended primarily for circuit switching and isolation. Its construction makes it suitable for installations where a high-current main switching device is required while overcurrent and short-circuit protection is provided elsewhere in the electrical system.

With a rated uninterrupted current of 1250 A, a four-pole configuration and fixed installation with horizontal rear terminals, the E2S/MS 1250 provides a practical solution for integration into low-voltage switchboards. Its E2S/MS performance class provides a rated short-time withstand current of 65 kA, supporting demanding power-distribution applications.

Key Advantages

• Heavy-duty ABB SACE Emax switch-disconnector for low-voltage power distribution.
• 1250 A rated uninterrupted current for high-current installations.
• Four-pole configuration enables simultaneous isolation of all four conductors.
• Fixed installation provides a robust permanent switchboard arrangement.
• Horizontal rear terminals support convenient busbar integration.
• 65 kA rated short-time withstand current for demanding distribution systems.
• Suitable for use as a main switch and isolation device.
• Part of the established ABB SACE Emax low-voltage switching platform.

Key Features

• ABB SACE Emax E2S/MS 1250 switch-disconnector.
• 1250 A rated uninterrupted current.
• Four-pole construction.
• Fixed (F) installation version.
• Horizontal rear (HR) terminals.
• 690 V AC rated operational voltage.
• 65 kA rated short-time withstand current (Icw).
• Suitable for use as a main switching device.
• Bolted main-circuit connection arrangement.
• Optional undervoltage release and motor operating mechanism compatibility.

Reliable Switching and Isolation for Power Distribution

Switch-disconnectors such as the ABB E2S/MS provide a dependable means of making, carrying and isolating high-current electrical circuits. They are particularly useful as main switches and isolation devices in distribution systems where separate protective equipment provides the required overload and short-circuit protection.

The fixed four-pole E2S/MS 1250 configuration allows all poles of the circuit to be switched together, while horizontal rear terminals facilitate integration with switchboard busbars. Its high short-time withstand capability makes it suitable for substantial industrial and commercial low-voltage distribution systems.

Typical Applications

• Main low-voltage distribution switchboards.
• Industrial power distribution systems.
• Main switching and electrical isolation.
• Manufacturing and process plants.
• Commercial and infrastructure electrical installations.
• Power distribution centres and switchgear assemblies.
• Transformer secondary distribution systems.
• High-current feeder and plant distribution circuits.