1SDA073503R1 ABB E4.2H/MS 3200 3p WMP Switch Disconnector

Why Choose the ABB E4.2H/MS 3200 3p WMP Switch Disconnector?

The ABB E4.2H/MS 3200 3p WMP, order code 1SDA073503R1, is a high-performance three-pole withdrawable air switch disconnector from the ABB SACE Emax 2 family, designed for reliable high-current switching and electrical isolation in demanding low-voltage power distribution systems. Built on the robust Emax 2 E4.2 platform, it combines a 3200 A continuous-current rating with high short-time withstand capability for industrial, commercial and infrastructure switchboards.

The E4.2H/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 and servicing while supporting applications where maintenance flexibility and continuity of switchboard operation are important.

With a rated uninterrupted current of 3200 A, a three-pole configuration, a rated operational voltage of 690 V AC and a rated short-time withstand current of 85 kA for 1 s, the E4.2H/MS provides robust performance for high-capacity distribution circuits. Its H performance level makes it particularly suitable for systems with demanding prospective fault-current requirements.

Key Advantages

• High-capacity 3200 A air switch disconnector for low-voltage power distribution.
• Three-pole configuration for three-phase switching and electrical isolation.
• 85 kA short-time withstand current for 1 s for demanding installations.
• 75 kA short-time withstand current for 3 s.
• Withdrawable moving-part construction supports convenient servicing and maintenance.
• Built on the proven ABB SACE Emax 2 E4.2 platform.

Key Features

• ABB SACE Emax 2 E4.2H/MS series.
• 3200 A rated uninterrupted current.
• 3-pole configuration.
• 690 V AC rated operational voltage.
• 1000 V AC rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 85 kA Icw for 1 s.
• 75 kA Icw for 3 s.
• Withdrawable moving-part construction.
• Motor operator and voltage releases available as optional accessories.

Reliable High-Current Switching and Isolation

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

The withdrawable E4.2H/MS architecture allows the moving part to be separated from its compatible fixed part, supporting efficient servicing and equipment replacement. Combined with its 3200 A current rating and 85 kA one-second withstand capability, the 1SDA073503R1 is particularly suited to demanding high-current low-voltage distribution assemblies.

Typical Applications

• Main low-voltage distribution switchboards.
• Industrial power distribution systems.
• Commercial and infrastructure electrical installations.
• High-current three-phase circuit isolation and sectionalising.
• Withdrawable switchgear requiring maintenance flexibility.
• OEM switchgear and power distribution assemblies.