1SDA058865R1 ABB E2S/MS 1250 3P F HR Switch Disconnector 1250 A

Why Choose the ABB E2S/MS 1250 3P F HR Switch Disconnector?

The ABB E2S/MS 1250 3P F HR, order code 1SDA058865R1, is a heavy-duty SACE Emax air switch disconnector designed for isolation and switching duties in high-current low-voltage electrical distribution systems. Part of ABB's proven New Emax E2 series, this three-pole unit combines a 1250 A rated uninterrupted current with a fixed installation configuration for industrial switchboards and power distribution assemblies.

The E2S/MS 1250 is manufactured as a fixed three-pole switch disconnector with rear horizontal terminals. Its S performance level provides a rated short-time withstand current of 65 kA for 1 s and 50 kA for 3 s, making it suitable for demanding distribution installations where dependable high-current isolation and robust short-time withstand capability are required.

Rated for operation up to 690 V AC, with a rated insulation voltage of 1000 V and impulse withstand voltage of 12 kV, the E2S/MS 1250 is engineered for reliable service in industrial power systems. Its fixed construction and rear flat horizontal connections support integration into appropriately designed switchboards while providing a durable switching solution for main distribution and isolation duties.

Key Advantages

• Heavy-duty 1250 A SACE Emax switch disconnector for industrial power distribution.
• Three-pole fixed configuration for permanent switchboard installations.
• Rated operational voltage up to 690 V AC.
• 65 kA short-time withstand current for 1 s for demanding electrical systems.
• Rear horizontal terminals support practical switchboard busbar connection.
• High mechanical and electrical endurance for dependable long-term operation.

Key Features

• ABB SACE Emax E2S/MS series.
• 1250 A rated uninterrupted current.
• Three-pole (3P) construction.
• Fixed (F) installation version.
• Rear flat horizontal (HR) terminals.
• 690 V AC rated operational voltage.
• 1000 V rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• S short-circuit performance level.
• Designed in accordance with applicable IEC standards.

Reliable High-Current Isolation for Power Distribution

Switch disconnectors provide a dependable means of switching and isolating electrical circuits without incorporating the overcurrent protection functions of a conventional circuit breaker. In high-current distribution systems, this makes the E2S/MS particularly useful where circuit protection is provided elsewhere and a robust isolation device is required for operational switching, maintenance and system segregation.

The ABB SACE Emax platform is engineered for demanding low-voltage switchboards and industrial power distribution. The E2S/MS 1250's fixed construction, three-pole arrangement and rear horizontal terminals make it particularly suitable for integration into engineered switchgear assemblies requiring a high-current main or sectionalising switch.

Typical Applications

• Industrial low-voltage power distribution switchboards.
• Main incoming and distribution isolation.
• Electrical switchgear and control assemblies.
• Industrial plants and manufacturing facilities.
• Infrastructure and commercial power distribution systems.
• High-current feeder and busbar isolation.