Why Choose the ABB MBN275 N+PE / Terminal Expansion 2PW?
The ABB MBN275 is a modular N+PE / terminal expansion kit designed for ABB low-voltage sub-distribution assemblies. Part of the ABB CombiLine system and DESUJ Sub Distribution range, it combines an N/PE busbar section with dedicated DIN rail space for terminal blocks in a practical 2PW installation field.
The MBN275 is designed for a 2-pole horizontal busbar system using ABB ZX518 busbar holders and accommodates a maximum of two copper busbars. The busbars are ordered separately, while two additional horizontal DIN rails provide dedicated mounting space for terminal blocks.
Configured for 2 panel widths (2PW), the MBN275 measures 450 × 500 × 200 mm and provides 72 space units. Its terminal section offers 438 mm usable width and a continuously adjustable usable depth of 90–145 mm, while the busbar system supports a maximum rated current of 440 A.
Key Advantages
- Combines N/PE busbar mounting and terminal expansion in one CombiLine module.
- 2PW configuration with a 500 mm field width.
- Designed for a 2-pole horizontal busbar system.
- Includes two additional DIN rails for terminal blocks.
- Provides 438 mm usable terminal width.
- Continuously adjustable 90–145 mm usable depth.
- Supports a maximum rated current of 440 A.
Key Features
- ABB CombiLine internal installation module.
- N+PE / Terminal Expansion 2PW.
- 3 RE / 450 mm module height.
- 500 mm module width.
- 200 mm module depth.
- 72 space units.
- Two additional horizontal DIN rails for terminal blocks.
- ZX518 busbar holders.
- Capacity for a maximum of two copper busbars.
- 438 mm usable terminal width.
- 90–145 mm adjustable usable depth.
- ABB order code 2CPX041754R9999.
Integrated N+PE and Terminal Distribution
The ABB MBN275 combines N/PE busbar distribution and terminal mounting within a single modular CombiLine field. Its horizontal two-pole busbar arrangement supports neutral and protective-earth distribution, while the two additional DIN rails provide dedicated space for organised terminal block installation.
The adjustable terminal mounting depth helps accommodate different terminal arrangements and wiring requirements. With a maximum rated current of 440 A, 438 mm of usable terminal width and compatibility with EDF or WR mounting frames, the MBN275 provides a flexible internal expansion solution for low-voltage distribution assemblies.
Typical Applications
- Low-voltage electrical distribution boards.
- ABB CombiLine cabinet systems.
- Neutral and protective-earth busbar distribution.
- Terminal block mounting and field wiring.
- Commercial and industrial electrical panels.
- Power distribution and control cabinets.
