1SDA073540R1 ABB E4.2V/MS 2500 4p WMP Switch Disconnector

Why Choose the ABB E4.2V/MS 2500 4p WMP Switch Disconnector?

The ABB E4.2V/MS 2500 4p WMP, order code 1SDA073540R1, is a high-performance four-pole withdrawable air switch disconnector from the ABB SACE Emax 2 family, engineered for dependable high-current switching and electrical isolation in demanding low-voltage power distribution systems. Built on the Emax 2 E4.2 platform, it combines a substantial 2500 A continuous-current rating with the strong short-time withstand performance of the V version.

The E4.2V/MS is a switch-disconnector configuration intended primarily for switching and electrical isolation rather than automatic overcurrent protection. The 1SDA073540R1 is supplied as the withdrawable moving part for use with the appropriate Emax 2 fixed part, allowing the device to be disconnected for inspection, servicing and maintenance.

With a rated uninterrupted current of 2500 A, a rated operational voltage of 690 V AC and a rated short-time withstand current of 100 kA for 1 s, the E4.2V/MS is designed for demanding high-fault-level distribution systems. Its four-pole configuration supports comprehensive switching and isolation in suitable three-phase four-wire installations.

Key Advantages

• High-capacity 2500 A air switch disconnector for demanding low-voltage distribution.
• Four-pole configuration for comprehensive circuit switching and isolation.
• 100 kA short-time withstand current for 1 s for high-fault-level installations.
• 690 V AC rated operational voltage for industrial power systems.
• Withdrawable moving-part construction supports convenient inspection and maintenance.
• Built on the proven ABB SACE Emax 2 E4.2 platform.

Key Features

• ABB SACE Emax 2 E4.2V/MS series.
• 2500 A rated uninterrupted current.
• 4-pole configuration.
• 690 V AC rated operational voltage.
• 100 kA Icw for 1 s.
• 2500 A AC-21 current rating at 400 V.
• 2500 A AC-23 current rating at 400 V.
• Withdrawable moving-part construction.
• Switch-disconnector design for high-current switching and isolation.
• Designed for integration with the appropriate Emax 2 withdrawable fixed part.

Reliable High-Current Switching and Isolation

ABB Emax 2 /MS switch disconnectors are designed to provide dependable switching and electrical isolation of low-voltage power circuits. Unlike an automatic Emax 2 air circuit breaker equipped with a protection trip unit, the /MS configuration is intended primarily to establish, carry, interrupt and isolate the electrical path within a coordinated power distribution system.

The withdrawable E4.2V/MS architecture allows the moving part to be separated from its compatible fixed part, supporting efficient inspection, servicing and equipment replacement. Combined with its 2500 A current rating and 100 kA one-second short-time withstand capability, the 1SDA073540R1 is particularly suitable for demanding high-current low-voltage distribution assemblies.

Typical Applications

• High-capacity main low-voltage distribution switchboards.
• Industrial power distribution systems.
• Data centres and critical infrastructure.
• Commercial and utility electrical installations.
• Four-pole circuit isolation and sectionalising.
• OEM withdrawable switchgear and power distribution assemblies.