2CPX041310R9999 ABB MT343B NH1 Fuse Switch Expansion 3PW

Why Choose the ABB MT343B NH1 Fuse Switch Expansion 3PW?

The ABB MT343B is a factory-assembled CombiLine NH1 fuse switch-disconnector module designed for fused power distribution within compatible ABB low-voltage distribution cabinets. Supplied under ABB order code 2CPX041310R9999, it is populated with six ABB XLP NH1 fuse switch-disconnectors, providing a high-capacity solution for multiple fused outgoing circuits.

The MT343B is configured for 3 panel widths (3 PW), with a field width of 750 mm and a module height of 750 mm. Its 5 RE format provides 180 space units, creating a substantial distribution field for six NH1 fuse switch-disconnectors in commercial and industrial low-voltage assemblies.

The module incorporates a 3-pole busbar system with a maximum rated current of 630 A and M12 connection screws. Separator shutters are included, while the distance from the front edge of the equipment to the protective cover is 43 mm. Plastic covers with equipment cut-outs, a RAL 7035 finish and 90-degree press-and-turn closures complete the assembly, which is suitable for compatible cabinets from 225 mm depth.

Key Advantages

• Factory-equipped NH1 fuse switch-disconnector module for ABB CombiLine systems.
• Includes six ABB XLP NH1 fuse switch-disconnectors.
• Integrated 3-pole busbar system rated up to 630 A.
• 3 PW configuration provides a wide 750 mm distribution field.
• Six NH1 positions provide substantial fused feeder capacity within one module.
• Separator shutters support a coordinated protected installation.
• 180 space units within a 5 RE modular field.
• Factory-mounted construction simplifies integration into compatible ABB distribution cabinets.

Key Features

• ABB CombiLine internal mounting system.
• 3 panel widths (3 PW).
• 5 raster units (5 RE).
• 750 mm module height.
• 750 mm field width.
• 180 space units.
• Equipped with 6 NH1 fuse switch-disconnectors.
• ABB XLP fuse switch-disconnector equipment.
• NH1 fuse switch-disconnectors rated up to 250 A.
• 3-pole busbar system.
• 630 A maximum rated current.
• M12 busbar connection screws.
• Separator shutters included.
• 43 mm spacing from equipment front edge to cover.
• Plastic covers with equipment cut-outs.
• RAL 7035 cover finish.
• 90-degree press-and-turn cover closure.

Reliable NH1 Fuse Protection for Distribution Systems

NH fuse switch-disconnectors combine fuse-based circuit protection with switching and isolation functionality for low-voltage power circuits. The ABB MT343B integrates six NH1 fuse switch-disconnectors with a coordinated three-pole busbar system, enabling multiple fused feeders to be incorporated into one high-capacity CombiLine distribution field.

With a maximum module rated current of 630 A, the MT343B is suited to substantial commercial and industrial power-distribution applications. Its factory-assembled configuration, separator shutters and coordinated protective covers reduce panel-building work, while the wide 3 PW format provides an organised solution for six NH1 fused circuits within compatible ABB cabinets.

Typical Applications

• Low-voltage sub-distribution boards.
• ABB CombiLine distribution assemblies.
• NH1 fused outgoing circuits.
• Commercial building power distribution.
• Industrial low-voltage distribution panels.
• Feeder protection, switching and circuit isolation.
• Panel-building applications requiring six NH1 fuse switch-disconnectors in a 3 PW field.