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.
