Why Choose the ABB MBL25 Busbar Module Expansion 2PW?
The ABB MBL25 is an unassembled 185 mm busbar system expansion module designed for ABB CombiLine N modular distribution assemblies. Supplied under ABB order code 2CPX041801R9999, it provides the mounting infrastructure for NH load-break switch disconnectors within compatible low-voltage distribution boards and cabinets.
The MBL25 is unequipped and designed for the installation of NH00 to NH3 load-break switch disconnectors rated from 160–630 A, including ABB SlimLine XR and compatible Jean Müller Sasil equipment. Its 3-pole horizontal busbar system uses ZX523 busbar holders with a 185 mm centre distance and supports up to three copper busbars, with a maximum rated current of 850 A.
With a height of 750 mm, width of 500 mm and depth of 625 mm, the MBL25 corresponds to a 5 GU × 2 PW configuration and provides 120 space units. It offers a usable width of 400 mm and closed RAL 7035 plastic covers, while the required copper busbars and WR mounting frame are ordered separately.
Key Advantages
- Purpose-designed 185 mm busbar expansion module for ABB CombiLine N systems.
- Supports NH load-break switch disconnectors from NH00 to NH3.
- Suitable for switch-disconnector ratings from 160–630 A.
- Maximum busbar-system rated current of 850 A.
- 3-pole horizontal busbar arrangement with 185 mm centre spacing.
- 2 PW / 500 mm width with 400 mm usable equipment width.
Key Features
- ABB MBL25 busbar system expansion module.
- ABB order code 2CPX041801R9999.
- Part of the ABB CombiLine N interior expansion system.
- Supplied as an unassembled, unpopulated kit.
- 5 GU / 750 mm height.
- 2 PW / 500 mm width.
- 625 mm depth.
- 120 space units.
- 400 mm usable width.
- Suitable for NH00 to NH3 load-break switch disconnectors.
- Suitable for ABB SlimLine XR and Jean Müller Sasil equipment.
- 3-pole horizontal busbar system.
- 185 mm busbar centre distance.
- Supplied with ZX523 busbar holders.
- Accommodates up to three copper busbars.
- Maximum rated current of 850 A.
- Spacing from equipment front edge to cover of 138 mm.
- Closed plastic covers with 90-degree press-and-turn closures.
- RAL 7035 cover finish.
- Designed for installation on a WR mounting frame.
- Copper busbars and mounting frame must be ordered separately.
- Not suitable for fire-protection housings.
High-Current NH Busbar Distribution for Electrical Assemblies
185 mm busbar systems provide a standardised platform for integrating NH load-break switch disconnectors into high-current low-voltage distribution assemblies. The ABB MBL25 combines a horizontal three-pole busbar arrangement with substantial equipment space, allowing compatible NH switching and fuse-protection devices to be installed in an organised modular configuration.
The ABB CombiLine N system allows different module widths to be combined with continuous busbars where required. With a maximum rated current of 850 A, support for NH00 to NH3 equipment and a 400 mm usable width, the MBL25 provides a robust foundation for fused power distribution in commercial and industrial switchboards.
Typical Applications
- ABB CombiLine N modular distribution assemblies.
- 185 mm NH busbar distribution systems.
- ABB SlimLine XR load-break switch disconnector installations.
- Commercial and industrial low-voltage switchboards.
- High-current fused outgoing distribution circuits.
- Panel-building and power-distribution applications.
