Why Choose the ABB MBG303 Modular Expansion 3PW?
The ABB MBG303 is a modular DIN rail device expansion module designed for structured internal fitting within ABB low-voltage sub-distribution assemblies. Part of the ABB CombiLine system and DESUJ Sub Distribution range, it provides a spacious mounting platform for modular DIN rail devices in compatible electrical cabinets and distribution boards.
The MBG303 incorporates three 35 × 15 mm DIN rails, with each rail providing 36 modular spaces. This gives the module a total capacity of 108 space units, while its 125 mm row spacing provides an organised layout for devices manufactured to DIN 43880.
Configured for 3 panel widths (3PW), the MBG303 measures 450 × 750 × 120 mm. The three-field-width design includes an additional stabilisation rail, while plastic covers with cut-outs and 90-degree push-turn fasteners provide a practical finished installation within compatible ABB cabinets.
Key Advantages
- Purpose-designed modular expansion for ABB CombiLine distribution systems.
- 3PW configuration with a 750 mm field width.
- Three 35 × 15 mm DIN rails for modular equipment.
- 108 total modular spaces for high-capacity device installation.
- Additional stabilisation rail supports the three-field-width DIN rail arrangement.
- Compatible with EDF and WR mounting frame systems.
Key Features
- ABB CombiLine internal installation module.
- Modular expansion 3PW.
- Three 35 × 15 mm DIN rails.
- 36 modular spaces per DIN rail.
- 108 total space units.
- 125 mm row spacing.
- Additional stabilisation rail for the three-field-width configuration.
- Suitable for installation devices according to DIN 43880.
- Plastic covers with cut-outs and 90-degree push-turn fasteners.
- Suitable for cabinets from 120 mm depth.
- ABB order code 2CPX041663R9999.
Structured DIN Rail Installation for Distribution Systems
Modular expansion units such as the ABB MBG303 provide a dedicated internal mounting area for protective, switching and control devices installed on standard DIN rails. Its three-row arrangement and 108-space capacity enable panel builders to organise substantial numbers of modular devices while maintaining an orderly and accessible cabinet layout.
The ABB CombiLine system uses modular internal fitting components to support flexible distribution cabinet construction. The MBG303 provides a wide three-panel-width device section with reinforced DIN rail mounting, making it particularly suitable for larger low-voltage sub-distribution assemblies.
Typical Applications
- Low-voltage electrical distribution boards.
- ABB CombiLine cabinet systems.
- DIN rail protective and switching devices.
- Commercial and industrial electrical panels.
- Control and power distribution cabinets.
- High-capacity modular sub-distribution assemblies.
