Why Choose the ABB MBS131 Busbar Module Expansion 1PW?
The ABB MBS131 is a CombiLine busbar module expansion kit designed for horizontal power-distribution busbar systems within professional low-voltage distribution assemblies. Supplied under ABB order code 2CPX041743R9999, this 1PW module provides a structured mounting arrangement for a three-pole copper busbar system with a maximum rated current of 850 A.
The MBS131 is supplied as an unassembled interior fitting module with ZX520 busbar holders and is designed for up to three copper busbars arranged horizontally. The busbar centre distance is 100 mm, providing a standardised arrangement for high-current power distribution within compatible ABB CombiLine assemblies. The copper busbars themselves are ordered separately.
With a module height of 450 mm, width of 250 mm and required cabinet depth of at least 275 mm, the MBS131 provides 36 space units in a compact single-field-width format. Closed RAL 7035 plastic covers with 90-degree press-and-turn fasteners provide an organised finished installation, while the required WR mounting frame is ordered separately.
Key Advantages
- Purpose-designed 1PW busbar module for ABB CombiLine distribution assemblies.
- Supports a three-pole horizontal copper busbar system.
- Maximum rated current of 850 A for high-current distribution applications.
- 100 mm busbar centre distance provides a structured power-distribution layout.
- Supplied with ZX520 busbar holders for compatible copper rails.
- Compact 450 × 250 mm module format provides 36 space units.
Key Features
- ABB MBS131 CombiLine busbar module kit.
- 1PW / single-field-width configuration.
- 3 row units / 450 mm module height.
- 250 mm module width.
- 36 space units.
- Three-pole busbar system.
- Horizontal busbar orientation.
- Maximum rated current of 850 A.
- 100 mm busbar centre distance.
- Designed for a maximum of three copper busbars.
- Includes ZX520 busbar holders.
- Closed plastic covers with 90-degree press-and-turn fasteners.
- RAL 7035 finish.
Reliable High-Current Distribution for Electrical Assemblies
Busbar modules such as the ABB MBS131 provide a structured method of distributing high electrical currents throughout low-voltage switchboards and distribution assemblies. The horizontal three-pole arrangement enables copper conductors to form a central power-distribution path from which compatible devices and other sections of the assembly can be supplied.
The MBS131 combines an 850 A maximum rated current with ZX520 busbar supports and a 100 mm conductor centre distance, providing a robust modular foundation for power distribution. Its CombiLine construction enables the module to integrate with compatible ABB interior fitting components while allowing the copper busbars to be selected separately for the completed assembly.
Typical Applications
- Low-voltage electrical distribution boards.
- Commercial and industrial switchboards.
- Three-phase power distribution systems.
- High-current busbar sections.
- Electrical panel building and system integration.
- Main and sub-distribution assemblies.
- ABB CombiLine interior expansion systems.
