Why Choose the ABB MT243B NH1 Fuse Switch Expansion 2PW?
The ABB MT243B 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 2CPX041309R9999, it is populated with four ABB XLP NH1 fuse switch-disconnectors and an integrated three-pole busbar system.
The MT243B is configured for 2 panel widths (2 PW), with a field width of 500 mm and a module height of 750 mm. Its 5 RE format provides 120 space units, creating a substantial distribution field for four NH1 fuse switch-disconnectors in commercial and industrial low-voltage assemblies.
The integrated 3-pole busbar system has a maximum rated current of 630 A, while the fitted NH1 switch-disconnectors are designed for fuse applications up to 250 A. Separator shutters are included, and the spacing 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 module.
Key Advantages
- Factory-equipped NH1 fuse switch-disconnector module for ABB CombiLine systems.
- Includes four ABB XLP NH1 fuse switch-disconnectors.
- Integrated 3-pole busbar system rated up to 630 A.
- 2 PW configuration provides four fused switching positions within a 500 mm field.
- NH1 fuse switch-disconnectors support robust fused feeder protection and isolation.
- Separator shutters are incorporated into the populated module.
- 120 space units within a coordinated 5 RE format.
- Factory-mounted construction simplifies integration into compatible ABB distribution cabinets.
Key Features
- ABB CombiLine internal mounting system.
- 2 panel widths (2 PW).
- 5 raster units (5 RE).
- 750 mm module height.
- 500 mm field width.
- 120 space units.
- Equipped with 4 NH1 fuse switch-disconnectors.
- ABB XLP fuse switch-disconnector equipment.
- NH1 fuse switch-disconnectors suitable for applications up to 250 A.
- 3-pole busbar system.
- 630 A maximum module rated current.
- 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 high-capacity fuse protection with switching and isolation functionality for low-voltage power circuits. The ABB MT243B integrates four NH1 fuse switch-disconnectors with a coordinated three-pole busbar system, providing an efficient solution for constructing multiple fused feeders within a single CombiLine distribution field.
With a maximum module current rating of 630 A, the MT243B 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 providing a structured installation for 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 four NH1 fuse switch-disconnectors in a 2 PW field.
