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.
