Why Choose the ABB MBR302 Busbar Module Expansion 3PW?
The ABB MBR302 is a CombiLine N horizontal busbar expansion module designed to provide a structured mounting field for busbar-mounted fuse equipment within compatible ABB low-voltage distribution cabinets. Supplied under ABB order code 2CPX041827R9999, it forms part of the ABB DESUJ Sub Distribution product group and is supplied as an unassembled, unequipped kit for professional distribution-board construction.
Designed for a 3-panel-width (3PW) configuration, the MBR302 measures 300 × 750 × 225 mm and provides 72 space units. It uses a 60 mm horizontal busbar system for three-pole applications, with ABB ZX146 busbar holders, a maximum of three copper busbars and additional centre bracing for the wide 3PW arrangement.
The MBR302 supports a maximum rated current of 440 A and is intended for the vertical installation of compatible busbar-mounted fuse sockets, D0 fuse switch disconnectors or NH00 fuse switch disconnectors. Copper busbars and equipment are ordered separately, while plastic covers with cut-outs, finished in RAL 7035, provide a neat and protected cabinet front.
Key Advantages
- 60 mm horizontal busbar system for professional low-voltage distribution assemblies.
- Supports a maximum rated current of 440 A.
- Designed for 3-pole distribution using up to three copper busbars.
- Wide 3-panel-width (3PW) format provides two usable equipment areas of approximately 320 mm each.
- Suitable for compatible D0 fuse switch disconnectors, NH00 fuse switch disconnectors and busbar-mounted fuse sockets.
- Additional centre bracing supports the busbar system across the 750 mm-wide module.
Key Features
- ABB MBR302 CombiLine N busbar module.
- 3-panel-width (3PW) configuration.
- 2 grid units / 300 mm module height.
- 750 mm module width.
- 225 mm module depth.
- 72 space units.
- 60 mm busbar centre distance.
- Horizontal busbar orientation with vertical equipment installation.
- 3-pole busbar system.
- Maximum of 3 copper busbars.
- ZX146 busbar holders.
- ZX172 end cover arrangement.
- 32 mm spacing between copper rail and cover.
- Maximum rated current of 440 A.
- Additional centre bracing for the 3PW busbar arrangement.
- Plastic covers with cut-outs and RAL 7035 finish.
60 mm Busbar Distribution for Fuse Equipment up to 440 A
The ABB MBR302 provides a 60 mm horizontal busbar platform for vertically installed fuse equipment, allowing compatible D0 fuse switch disconnectors, NH00 fuse switch disconnectors and busbar-mounted fuse sockets to be incorporated directly into a CombiLine N distribution assembly. The three-pole arrangement supports up to three copper busbars and a maximum rated current of 440 A.
With a width of 750 mm, the MBR302 provides two usable equipment areas of approximately 320 mm and incorporates additional centre bracing for the busbar system. The module is supplied unequipped so that compatible fuse devices and copper rails can be selected according to the application, while its prepared cut-out covers maintain an organised and accessible switchboard front.
Typical Applications
- ABB CombiLine N low-voltage distribution cabinets.
- 60 mm horizontal busbar distribution systems.
- D0 fuse switch disconnector installations.
- NH00 fuse switch disconnector installations.
- Busbar-mounted Neozed and Diazed fuse socket applications.
- Commercial and industrial power distribution up to 440 A.
