1SDA058999R1 ABB E4H/MS 4000 3P F HR Switch Disconnector 4000 A

Why Choose the ABB E4H/MS 4000 3P F HR Switch Disconnector?

The ABB E4H/MS 4000 3P F HR, order code 1SDA058999R1, is a heavy-duty SACE Emax air switch disconnector engineered for high-current switching and isolation in low-voltage power distribution systems. Built on the ABB E4 frame, this three-pole unit provides a rated uninterrupted current of 4000 A and uses a fixed installation format with rear flat horizontal terminals.

The E4H/MS 4000 combines the proven SACE Emax architecture with the H short-circuit performance level. It provides a rated short-time withstand current of 100 kA for 1 s and 75 kA for 3 s, together with a rated short-circuit making capacity of 220 kA peak, providing exceptional withstand capability for demanding industrial power distribution systems.

Rated for operation up to 690 V AC or 250 V DC, with a rated insulation voltage of 1000 V and rated impulse withstand voltage of 12 kV, the E4H/MS 4000 is designed for substantial low-voltage distribution duties. ABB /MS switch disconnectors retain the overall dimensions and accessory possibilities of the corresponding Emax circuit-breaker platform while omitting the overcurrent trip unit, making them suitable where circuit protection is provided separately.

Key Advantages

• Heavy-duty 4000 A SACE Emax switch disconnector for high-current distribution and isolation.
• Three-pole fixed construction for robust permanent switchboard installations.
• Rear flat horizontal terminals facilitate connection to engineered switchboard busbar systems.
• Rated for operation up to 690 V AC or 250 V DC.
• Exceptional 100 kA short-time withstand current for 1 s.
• AC-23A utilisation category supports switching of motor loads and other highly inductive loads.

Key Features

• ABB SACE Emax E4H/MS series.
• 4000 A rated uninterrupted current.
• Three-pole (3P) construction.
• Fixed (F) installation version.
• Rear flat horizontal (HR) terminals.
• 690 V AC / 250 V DC rated operational voltage.
• 1000 V rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• H short-circuit performance level.
• 220 kA peak rated short-circuit making capacity.

Reliable High-Current Isolation for Power Distribution

ABB /MS switch disconnectors are derived from the corresponding SACE Emax circuit breakers and retain their overall dimensions and accessory possibilities while differing through the absence of overcurrent trip units. The E4H/MS 4000 therefore provides dedicated switching and isolation where electrical protection is supplied separately, while its AC-23A utilisation category supports switching of motor loads and other highly inductive circuits within the applicable ratings.

With its 4000 A current rating, three-pole fixed construction and exceptional 100 kA one-second withstand capability, the E4H/MS 4000 is particularly suited to high-power industrial distribution assemblies. Rear flat horizontal terminals support efficient integration with substantial busbar systems, while the established SACE Emax mechanism provides dependable operation in demanding electrical installations.

Typical Applications

• High-current industrial low-voltage distribution switchboards.
• Main incoming and distribution isolation.
• Fixed air-insulated switchgear assemblies.
• Industrial plants and manufacturing facilities.
• Large commercial and infrastructure power distribution systems.
• High-current feeder and busbar isolation.