ABB MBS231 is a 2PW CombiLine busbar module expansion kit for three-pole horizontal 40 × 10 mm copper busbars, with a 100 mm busbar centre distance and maximum rated current of 850 A.
Why Choose the ABB MBS231 Busbar Module Expansion 2PW?
The ABB MBS231 is a CombiLine busbar module expansion kit designed for horizontal high-current power distribution within professional low-voltage distribution assemblies. Supplied under ABB order code 2CPX041744R9999, this 2PW module accommodates a three-pole copper busbar system with a maximum rated current of 850 A.
The MBS231 is supplied as an unassembled interior fitting module with ABB ZX520 busbar holders. It is designed for a maximum of three horizontally arranged copper busbars with a 100 mm busbar centre distance. The required copper busbars are ordered separately, allowing the completed busbar system to be configured for the distribution assembly.
With a module height of 450 mm, width of 500 mm and minimum cabinet depth of 275 mm, the MBS231 provides 72 space units in a two-field-width format. It is designed for 40 × 10 mm copper busbars and provides a robust modular platform for high-current distribution within compatible ABB CombiLine systems.
Key Advantages
Purpose-designed 2PW 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 conductor arrangement.
Designed for 40 × 10 mm copper busbars.
Provides 72 space units within a two-field-width module.
Key Features
ABB MBS231 CombiLine busbar module kit.
2PW / two-field-width configuration.
3 row units / 450 mm module height.
500 mm module width.
72 space units.
Three-pole busbar system.
Horizontal busbar orientation.
Maximum rated current of 850 A.
100 mm busbar centre distance.
Designed for up to three copper busbars.
Suitable for 40 × 10 mm copper rails.
Supplied with 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 MBS231 provide a structured method of distributing substantial electrical currents through low-voltage switchboards and distribution assemblies. The three-pole horizontal arrangement creates a central power-distribution path that can support compatible connections and equipment throughout the completed electrical assembly.
The MBS231 combines an 850 A maximum rated current, 25 kA short-time withstand capability and a standardised 100 mm busbar centre distance. Its two-field-width CombiLine construction provides increased busbar length compared with narrower modules while retaining the modular architecture required for professional panel building.
Typical Applications
Low-voltage electrical distribution boards.
Commercial and industrial switchboards.
Three-phase power distribution systems.
High-current busbar sections.
Main and sub-distribution assemblies.
Electrical panel building and system integration.
ABB CombiLine interior expansion systems.
Technical Specifications
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Rail / Busbar Profile
40 × 10 mm
Device Type
Busbar
Busbar Centre Distance (mm)
100 mm
Product Series
ABB CombiLine
Series
CombiLine
ABB order code
2CPX041744R9999
Product type
Busbar module expansion kit
Product group
DESUJ Sub Distribution
Configuration
2PW
Delivery format
Kit, unassembled
Height
450 mm
Width
500 mm
Minimum cabinet depth
275 mm
Row units
3
Space units
72
Number of poles
3
Busbar orientation
Horizontal
Busbar centre distance
100 mm
Maximum number of copper busbars
3
Busbar dimensions
40 × 10 mm
Busbar holder
ZX520
Maximum rated current
850 A
Rated short-time withstand current (Icw)
25 kA
Cover material
Plastic
Cover design
Closed
Cover fastener
90-degree press-and-turn fastener
Colour
RAL 7035
Mounting frame
WR, ordered separately
Busbars
Ordered separately
Corresponding assembled version
MS231
Assembled-version order code
2CPX041279R9999
Frequently Asked Questions
What is the ABB MBS231 used for?
The ABB MBS231 is a 2PW busbar module expansion kit designed to support a three-pole horizontal copper busbar system within compatible ABB CombiLine low-voltage distribution assemblies.
What is the maximum rated current of the ABB MBS231?
The MBS231 supports a maximum rated current of 850 A.
What busbars are suitable for the MBS231?
The MBS231 is designed for up to three 40 × 10 mm copper busbars arranged horizontally with a 100 mm centre distance.
Are the copper busbars supplied with the MBS231?
No. The MBS231 includes the appropriate busbar support arrangement, but the copper busbars must be ordered separately.
What size is the ABB MBS231?
The MBS231 has a module height of 450 mm, width of 500 mm and is suitable from a cabinet depth of 275 mm, providing 72 space units.
Trusted ABB Distribution System Engineering
ABB CombiLine busbar modules such as the MBS231 provide panel builders with a structured and robust platform for high-current power distribution within professional low-voltage switchboards and distribution assemblies.
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