1SDA073515R1 ABB E1.2B/MS 630 4p WMP Switch Disconnector

Why Choose the ABB E1.2B/MS 630 4p WMP Switch Disconnector?

The ABB E1.2B/MS 630 4p WMP, order code 1SDA073515R1, is a compact four-pole withdrawable air switch disconnector from the ABB SACE Emax 2 family, designed for dependable switching and electrical isolation in low-voltage power distribution systems. Built on the Emax 2 E1.2 platform, it combines a 630 A continuous-current rating with a compact format suitable for industrial, commercial and infrastructure switchboards.

The E1.2B/MS is a switch-disconnector configuration intended for switching and isolation rather than automatic overcurrent protection. This product is the withdrawable moving part, allowing it to be disconnected from its compatible fixed part for inspection, servicing and maintenance while retaining the proven architecture of the ABB Emax 2 range.

With a rated uninterrupted current of 630 A, a rated operational voltage of 690 V AC and a rated short-time withstand current of 42 kA for 1 s, the E1.2B/MS provides robust performance for low-voltage distribution. Its four-pole configuration enables simultaneous switching and isolation of all four conductors where required by the electrical system design.

Key Advantages

• Compact 630 A air switch disconnector for low-voltage distribution systems.
• Four-pole configuration for comprehensive circuit switching and isolation.
• 42 kA short-time withstand current for 1 s for demanding distribution applications.
• 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 E1.2 platform.

Key Features

• ABB SACE Emax 2 E1.2B/MS series.
• 630 A rated uninterrupted current.
• 4-pole configuration.
• 690 V AC rated operational voltage.
• 1000 V AC rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 42 kA Icw for 1 s.
• 24 kA Icw for 3 s.
• Withdrawable moving-part construction.
• Optional motor operator and voltage release capability.

Reliable Switching and Isolation for Power Distribution

ABB Emax 2 /MS switch disconnectors 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 as part of a coordinated power distribution system.

The withdrawable E1.2B/MS architecture allows the moving part to be separated from its compatible fixed part, supporting efficient servicing and equipment replacement. Combined with its 630 A current rating, 42 kA one-second withstand capability and four-pole configuration, the 1SDA073515R1 provides a flexible solution for modern low-voltage distribution assemblies.

Typical Applications

• Low-voltage main distribution switchboards.
• Industrial power distribution systems.
• Commercial and infrastructure electrical installations.
• Four-pole circuit isolation and sectionalising.
• Withdrawable switchgear requiring maintenance flexibility.
• OEM switchgear and panel-building applications.