Why Choose the ABB MS128 440A Busbar Module?
The ABB MS128, order code 2CPX041123R9999, is a 440 A vertical busbar interior fitting module from ABB's CombiLine range. Supplied mounted for installation in a compatible cabinet, it provides a coordinated four-pole copper busbar system for professional low-voltage sub-distribution assemblies.
The MS128 occupies 2 grid units (300 mm) in height and 1 panel width (250 mm), providing 24 space units. Its busbar system comprises four vertical 30 × 5 mm copper busbars with a 40 mm centre distance, supported by ABB ZX518 busbar holders and rated for a maximum current of 440 A.
Designed for use from a cabinet depth of 200 mm, the MS128 can be installed on compatible EDF or WR mounting frames, which are ordered separately. The module includes closed RAL 7035 plastic covers with 90° press-and-turn closures and is specifically intended for standard distribution enclosures rather than fire protection housings.
Key Advantages
- High-capacity 440 A rated busbar system for low-voltage distribution.
- Four-pole vertical copper busbars for coordinated power distribution.
- Compact 1 panel width / 250 mm installation format.
- 30 × 5 mm copper busbars for robust current distribution.
- 40 mm busbar centre distance.
- Compatible with EDF and WR mounting frames.
- Supplied as a mounted interior fitting module.
- Closed plastic covers help provide a neat, protected installation.
- Part of ABB's modular CombiLine interior expansion system.
Key Features
- ABB MS128 interior fitting busbar module.
- ABB order code 2CPX041123R9999.
- Maximum rated current: 440 A.
- 4-pole busbar system.
- Four copper busbars.
- Vertical busbar orientation.
- 30 × 5 mm busbar dimensions.
- 40 mm busbar centre distance.
- Busbars feature M6 threaded bores and connections with M8 press-in nuts.
- Uses ABB ZX518 busbar holders.
- 2 grid units / 300 mm high.
- 1 panel width / 250 mm wide.
- 24 space units.
- Suitable from a cabinet depth of 200 mm.
- Closed plastic covers finished in RAL 7035.
- 90° press-and-turn cover closures.
- Compatible mounting frame must be ordered separately.
- Not suitable for fire protection housings.
440A Vertical Busbar Distribution with ABB CombiLine
A vertical busbar module provides a structured method of distributing electrical power through a compatible low-voltage distribution assembly. The ABB MS128 uses four 30 × 5 mm copper busbars arranged vertically with a 40 mm centre distance, providing a maximum rated current of 440 A in a compact one-panel-width format.
The module is supplied mounted and incorporates ABB ZX518 busbar holders together with closed protective covers. Its 300 × 250 mm modular installation format supports both EDF and WR mounting-frame arrangements, allowing the MS128 to integrate into coordinated ABB CombiLine sub-distribution assemblies from 200 mm cabinet depth.
Typical Applications
- Low-voltage electrical sub-distribution systems.
- ABB CombiLine distribution assemblies.
- Vertical 440 A busbar distribution systems.
- Commercial building electrical distribution.
- Industrial low-voltage distribution assemblies.
- EDF mounting-frame installations.
- WR mounting-frame installations.
- Professional switchboard and panel-building applications.
