Why Choose the ABB MA160ALA OT/S750DR Switch Expansion 1PW?
The ABB MA160ALA is a CombiLine switch expansion module designed for the installation of a compatible load-break switch or selective main circuit breaker within ABB low-voltage distribution cabinets. Supplied under ABB order code 2CPX041376R9999, the module is delivered unpopulated and provides a coordinated mounting arrangement for an ABB OT160-class switch or compatible S750DR device.
The MA160ALA is configured for 1 panel width (1 PW) and 2 raster units (2 RE), giving a module height of 300 mm and field width of 250 mm. It provides 24 space units and a usable equipment width of 216 mm, creating a compact switching field for low-voltage distribution assemblies.
Equipment is mounted on 35 × 15 mm DIN rails, with the module suitable for 3-pole or 4-pole switching arrangements and a maximum rated current of 160 A. Closed plastic covers finished in RAL 7035 use 90-degree press-and-turn closures, while compatibility with both EDF and WR mounting frames supports integration into cabinets from 200 mm depth.
Key Advantages
- Purpose-designed switch expansion module for ABB CombiLine distribution systems.
- Suitable for compatible ABB OT160 load-break switching arrangements or an S750DR selective main circuit breaker.
- Supports 3-pole or 4-pole device configurations.
- Maximum rated current of 160 A.
- Compact 1 PW format occupies only a 250 mm-wide cabinet field.
- 216 mm usable width provides a defined equipment mounting area.
- DIN-rail mounting simplifies compatible device installation.
- Suitable for both EDF and WR mounting-frame systems.
Key Features
- ABB CombiLine internal mounting system.
- 1 panel width (1 PW).
- 2 raster units (2 RE).
- 300 mm module height.
- 250 mm field width.
- 216 mm usable width.
- 24 space units.
- Supplied unpopulated.
- Suitable for ABB OT160-class load-break switch arrangements or S750DR equipment.
- Supports 3-pole or 4-pole configurations.
- 160 A maximum rated current.
- Equipment mounting on 35 × 15 mm DIN rails.
- Closed plastic protective covers.
- RAL 7035 cover finish.
- 90-degree press-and-turn cover closures.
Flexible Switching and Isolation Integration
The ABB MA160ALA provides a coordinated CombiLine mounting platform for integrating switching or selective main protection equipment into a compact distribution field. Its 160 A rating, 216 mm usable width and DIN-rail arrangement make it suitable for constructing incoming or outgoing switching sections without requiring a factory-installed switching device.
Because the module is supplied unpopulated, the appropriate compatible ABB device can be selected according to the finished distribution-board design. The closed protective covers, standardised CombiLine dimensions and compatibility with EDF and WR mounting frames provide a structured solution for professional commercial and industrial panel construction.
Typical Applications
- Low-voltage sub-distribution boards.
- ABB CombiLine distribution assemblies.
- Load-break switch integration.
- Selective main circuit-breaker installations.
- Commercial building electrical distribution.
- Industrial low-voltage distribution panels.
- Incoming or outgoing switching circuits rated up to 160 A.
