Why Choose the ABB MBT145 NH2 Fuse Switch Expansion 1PW?
The ABB MBT145 is a modular NH2 fuse switch expansion from the ABB CombiLine interior expansion system. Supplied under ABB order code 2CPX041785R9999, this unassembled and unpopulated module is designed to accommodate NH2 fuse switch disconnectors within compatible low-voltage sub-distribution assemblies.
Designed in a compact 1PW / one-field-width format, the MBT145 measures 250 mm wide and 750 mm high, providing 60 space units. It accommodates up to two NH2 fuse switch disconnectors, making it suitable for integrating high-current fused feeders while retaining a narrow panel footprint.
The MBT145 is designed for a 3-pole busbar system with a maximum rated current of 630 A in the applicable double-storey arrangement. It is suitable for ABB ZH441 NH2 fuse switch disconnectors rated up to 400 A, uses plastic covers with equipment cut-outs and requires a compatible EDF or WR mounting frame ordered separately.
Key Advantages
- Purpose-designed NH2 fuse switch expansion for ABB CombiLine assemblies.
- Compact 1PW / 250 mm field width helps optimise switchboard space.
- Provides installation positions for up to two NH2 fuse switch disconnectors.
- Designed for a 3-pole busbar system.
- Supports a maximum rated current of 630 A in the applicable double-storey configuration.
- Compatible with both EDF and WR mounting frames for flexible panel construction.
Key Features
- ABB MBT145 NH2 fuse switch expansion module.
- 1PW / one-field-width configuration.
- 5 RE / 750 mm module height.
- 250 mm module width.
- 60 space units.
- Capacity for 2 × NH2 fuse switch disconnectors.
- Suitable for ABB ZH441 NH2 fuse switch disconnectors.
- 3-pole busbar system.
- 630 A maximum rated current for the applicable double-storey arrangement.
- Plastic covers with equipment cut-outs.
- 90-degree press-and-turn closures.
- RAL 7035 cover finish.
High-Current NH2 Fuse Protection for Distribution Assemblies
NH2 fuse switch disconnectors combine high-current fuse protection with switching and isolation functions for low-voltage distribution systems. The ABB MBT145 provides a dedicated CombiLine installation section for up to two compatible NH2 devices, enabling protected outgoing feeders to be incorporated into an organised modular switchboard layout.
The module is intended for a 3-pole busbar arrangement and supports a maximum rated current of 630 A in its double-storey configuration. Combined with compatibility for ABB ZH441 400 A NH2 fuse switch disconnectors and EDF or WR mounting structures, the MBT145 provides a coordinated platform for professional high-current distribution-panel construction.
Typical Applications
- ABB CombiLine sub-distribution assemblies.
- NH2 fused feeder protection and isolation.
- Low-voltage electrical distribution boards.
- Commercial and industrial switchboards.
- High-current outgoing distribution circuits.
- Panel-building and distribution-board expansion projects.
