Why Choose the ABB MN174 N+PE / Terminal Expansion 1PW?
The ABB MN174 is a CombiLine N/PE busbar and terminal expansion module designed for structured neutral, protective-earth and terminal distribution within low-voltage cabinets. Supplied under ABB order code 2CPX041281R9999, the MN174 is the mounted cabinet version with a compact 1PW / single-field-width configuration.
The MN174 combines provision for a 2-pole N/PE busbar system with an additional DIN rail for terminal blocks. It has a module height of 2 RE / 300 mm, a field width of 1 FB / 250 mm and 24 space units, with 188 mm usable terminal width and continuously adjustable depth from 90–145 mm.
Designed for rated currents up to 440 A, the module incorporates a ZX518 busbar holder for up to two copper busbars and uses closed RAL 7035 plastic covers with 90-degree press-and-turn fasteners. The copper busbars and compatible EDF or WR mounting frame are ordered separately, allowing the MN174 to be configured as part of a professional ABB CombiLine distribution assembly.
Key Advantages
- Combines N/PE busbar accommodation and terminal expansion within one CombiLine module.
- Supports a 2-pole busbar system with up to two copper busbars.
- Provides an additional DIN rail for terminal blocks.
- Continuously adjustable usable depth of 90–145 mm supports flexible terminal positioning.
- Rated current capability up to 440 A.
- Compact 1PW / 250 mm field width for structured cabinet layouts.
Key Features
- ABB CombiLine interior expansion system.
- Designed for N/PE busbars and terminal blocks.
- 2 RE / 300 mm module height.
- 1 FB / 250 mm field width.
- 24 space units.
- 188 mm usable width for terminal blocks.
- Usable depth continuously adjustable from 90–145 mm.
- Horizontal 2-pole busbar arrangement.
- Includes ZX518 busbar holder.
- Suitable for a maximum of two copper busbars.
- Maximum rated current of 440 A.
- Closed RAL 7035 plastic covers with 90-degree press-and-turn fasteners.
- Suitable for compatible EDF or WR mounting frames.
Combined N/PE Distribution and Terminal Expansion
The ABB MN174 provides a coordinated interior section for neutral and protective-earth busbars together with terminal blocks. Its horizontal busbar arrangement accommodates up to two copper rails, while the additional DIN rail provides dedicated mounting capacity for terminal blocks within the same compact module.
Depth adjustment from 90–145 mm allows the terminal rail position to be adapted to the assembly requirements. The MN174 is supplied as the mounted cabinet version; copper busbars and the appropriate EDF or WR mounting frame must be selected and ordered separately for the completed installation.
Typical Applications
- Neutral and protective-earth distribution in low-voltage cabinets.
- Terminal block expansion within ABB CombiLine assemblies.
- Commercial and industrial sub-distribution boards.
- Low-voltage switchgear and distribution assemblies.
- Structured N/PE busbar and terminal wiring sections.
- Professional panel-building and electrical installation projects.
