ABB MS231 is a 2 PW CombiLine horizontal three-pole busbar module rated up to 850 A with 100 mm busbar spacing and ZX520 holders for high-current low-voltage distribution assemblies.
Why Choose the ABB MS231 Busbar Module Expansion 2PW?
The ABB MS231 is a factory-assembled CombiLine busbar module designed for horizontal power distribution within compatible ABB low-voltage distribution cabinets. Supplied under ABB order code 2CPX041279R9999, it provides a structured internal platform for a high-current three-pole copper busbar system with a rated current of up to 850 A.
The MS231 is configured for 2 panel widths (2 PW), with a field width of 500 mm and a module height of 450 mm. Its 3 RE format provides 72 space units and is designed for horizontal installation of up to three copper busbars, making it suitable for substantial power-distribution sections within commercial and industrial switchgear assemblies.
The busbar system uses a 100 mm centre-to-centre spacing and ABB ZX520 busbar holders. The copper busbars are ordered separately, allowing the required conductor arrangement to be selected for the application. Closed plastic covers with a RAL 7035 finish and 90-degree press-and-turn closures complete the assembly, which is suitable for compatible cabinets from 275 mm depth.
Key Advantages
High-current horizontal busbar module rated up to 850 A.
2 PW configuration provides a 500 mm-wide distribution field.
Designed for a three-pole copper busbar system.
100 mm busbar centre spacing provides a defined installation geometry.
Uses ABB ZX520 busbar holders for coordinated system construction.
Supports up to three copper busbars.
Factory-mounted configuration simplifies integration into compatible distribution cabinets.
Closed RAL 7035 covers provide a coordinated finished internal assembly.
Key Features
ABB CombiLine internal mounting system.
2 panel widths (2 PW).
3 raster units (3 RE).
450 mm module height.
500 mm field width.
72 space units.
850 A maximum rated current.
Horizontal busbar orientation.
Designed for a 3-pole busbar system.
100 mm busbar centre distance.
ABB ZX520 busbar holders.
Suitable for up to three copper busbars.
Copper busbars ordered separately.
Closed plastic covers finished in RAL 7035.
90-degree press-and-turn cover closure.
Reliable High-Current Busbar Distribution
Busbar modules provide a structured method of distributing substantial electrical currents through low-voltage switchgear and distribution assemblies. The ABB MS231 combines an 850 A current rating with a horizontal three-pole arrangement and 100 mm busbar spacing, providing a coordinated platform for constructing high-current distribution sections within the CombiLine system.
The module is supplied mounted and installed in the cabinet but without the copper busbars, allowing the busbar conductors to be selected separately for the required assembly. ABB ZX520 holders maintain the defined busbar arrangement, while the 2 PW format provides a practical balance between high-current distribution capability and efficient use of cabinet space.
Typical Applications
Low-voltage power distribution boards.
ABB CombiLine distribution assemblies.
High-current busbar distribution sections.
Commercial building electrical distribution systems.
Industrial low-voltage switchgear.
Main and sub-distribution cabinet assemblies.
Panel-building applications requiring horizontal three-pole busbars up to 850 A.
Technical Specifications
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Busbar Centre Distance (mm)
100 mm
Product Series
ABB CombiLine
Device Type
Busbar
Series
CombiLine
ABB order code
2CPX041279R9999
Product type
Busbar module expansion
Panel width
2 PW
Raster units
3 RE
Module height
450 mm
Field width
500 mm
Space units
72
Rated current
Up to 850 A
Busbar system
3-pole
Busbar orientation
Horizontal
Busbar centre distance
100 mm
Busbar holder
ABB ZX520
Maximum number of copper busbars
3
Copper busbars
Ordered separately
Minimum applicable cabinet depth
275 mm
Cover material
Plastic
Cover design
Closed
Cover colour
RAL 7035
Cover closure
90-degree press-and-turn
Installation
Mounted and installed in cabinet
Mounting-frame system
WR
Fire-protection housing suitability
Not suitable
Product group
DESUJ Sub Distribution
Frequently Asked Questions
What is the ABB MS231 used for?
The ABB MS231 is a horizontal busbar module for creating a three-pole high-current distribution system within compatible ABB CombiLine low-voltage distribution cabinets.
What is the rated current of the ABB MS231?
The MS231 busbar module has a maximum rated current of 850 A.
What is the busbar spacing of the MS231?
The ABB MS231 uses a 100 mm centre-to-centre busbar spacing and ABB ZX520 busbar holders.
Are the copper busbars supplied with the MS231?
No. The MS231 is designed for up to three copper busbars, but the required busbars must be ordered separately.
What cabinet depth is required for the ABB MS231?
The MS231 is suitable for compatible distribution cabinets from 275 mm depth. The required WR mounting frame must be ordered separately.
Trusted ABB Distribution System Components
ABB CombiLine busbar modules provide coordinated high-current distribution solutions for low-voltage assemblies, supporting structured power distribution, consistent busbar positioning and efficient integration within compatible switchgear cabinets.
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