1SDA073481R1 ABB E1.2N/MS 1000 3p WMP Switch Disconnector

Why Choose the ABB E1.2N/MS 1000 3p WMP Switch Disconnector?

The ABB E1.2N/MS 1000 3p WMP, order code 1SDA073481R1, is a compact and robust three-pole withdrawable air switch disconnector from the ABB SACE Emax 2 family, designed for dependable switching and isolation in low-voltage power distribution systems. Built on the Emax 2 E1.2 platform, it combines high electrical performance with a space-efficient design for industrial, commercial and infrastructure switchboards.

The E1.2N/MS is designed as a switch disconnector rather than an automatic protection circuit breaker, providing controlled switching and electrical isolation of power circuits. Its withdrawable moving-part construction allows the device to be disconnected from the fixed part for servicing and maintenance, supporting applications where accessibility and reduced maintenance downtime are important.

With a rated uninterrupted current of 1000 A, a three-pole configuration, a rated operational voltage of 690 V AC and a rated short-time withstand current of 50 kA, the E1.2N/MS provides reliable performance in demanding distribution systems. Its compact E1.2 frame helps optimise switchboard space while retaining the high-current capability expected from ABB Emax 2 equipment.

Key Advantages

• Compact 1000 A air switch disconnector for low-voltage power distribution.
• Three-pole configuration for three-phase circuit switching and isolation.
• 50 kA rated short-time withstand current for demanding electrical installations.
• 690 V AC rated operational voltage for industrial distribution networks.
• Withdrawable moving-part design simplifies isolation, inspection and maintenance.
• Compact ABB Emax 2 E1.2 frame supports space-efficient switchboard design.

Key Features

• ABB SACE Emax 2 E1.2N/MS series.
• 1000 A rated uninterrupted current.
• 3-pole configuration.
• 690 V AC rated operational voltage.
• 50 kA rated short-time withstand current.
• 1000 A AC-23 current rating at 400 V.
• Withdrawable moving-part construction.
• Optional motor operator and voltage releases.
• Lockable operating mechanism.
• Compact design for low-voltage distribution switchboards.

Reliable Switching and Isolation for Power Distribution

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

The withdrawable E1.2N/MS architecture allows the moving part to be removed from its separately installed fixed part, helping simplify maintenance and equipment replacement. Combined with its 1000 A current rating and 50 kA short-time withstand capability, this makes the 1SDA073481R1 well suited to compact but demanding power distribution assemblies.

Typical Applications

• Low-voltage main distribution switchboards.
• Industrial power distribution systems.
• Commercial and infrastructure electrical installations.
• Three-phase circuit isolation and sectionalising.
• Withdrawable switchgear assemblies requiring service flexibility.
• OEM switchgear and panel-building applications.