Why Choose the ABB MBT143 NH1 Fuse Switch Expansion?
The ABB MBT143 is a CombiLine NH1 fuse switch disconnector expansion module designed for use within ABB low-voltage sub-distribution assemblies. Supplied under ABB order code 2CPX041779R9999, it belongs to ABB’s DESUJ Sub Distribution product group and provides a purpose-designed installation field for NH1 fuse switch disconnectors in professional electrical distribution cabinets.
The MBT143 is supplied as an unassembled and unequipped internal installation module prepared for the installation of 2 NH1 fuse switch disconnectors. It is designed for ABB ZH431 NH1 fuse switch disconnectors rated at 250 A and a 3-pole busbar system. The module itself supports a maximum rated current of 630 A in its double-storey configuration, with the fuse switch disconnectors and required busbar components ordered separately.
With a height of 750 mm, a compact 1PW field width of 250 mm and 60 space units, the MBT143 provides capacity for two vertically arranged NH1 fuse switch disconnectors while conserving cabinet width. It is suitable for cabinets from 200 mm depth and can be installed on compatible ABB EDF or WR mounting frames, which are ordered separately.
Key Advantages
- Purpose-designed ABB CombiLine module for NH1 fuse switch disconnectors.
- Provides installation capacity for 2 NH1 fuse switch disconnectors within a compact 1PW field.
- Designed for a 3-pole busbar system for structured low-voltage power distribution.
- Maximum module rated current of 630 A in the double-storey arrangement.
- 60 space units provide substantial installation capacity within a 250 mm-wide field.
- Compatible with both EDF and WR mounting frames for flexible CombiLine integration.
Key Features
- ABB MBT143 CombiLine internal installation module.
- Designed for NH1 fuse switch disconnectors.
- Unequipped module for installation of 2 NH1 devices.
- Compatible with ABB ZH431 250 A NH1 fuse switch disconnectors.
- 1 panel width (1PW) configuration.
- 5 grid units (5GU).
- 750 mm module height.
- 250 mm field width.
- 60 space units.
- 3-pole busbar system.
- 630 A maximum rated current for the double-storey configuration.
- Plastic covers with device cut-outs.
- 90-degree press-and-turn cover fasteners.
- RAL 7035 light grey finish.
- Suitable for cabinets from 200 mm depth.
- Compatible with EDF or WR mounting frames, ordered separately.
Reliable NH1 Fuse Switch Distribution for Electrical Panels
NH fuse switch disconnectors combine fuse protection with switching and isolation functions in low-voltage distribution systems. A dedicated CombiLine installation module provides the mechanical arrangement and system interface required to integrate these devices into a structured distribution board while maintaining an organised and accessible panel layout.
The ABB MBT143 provides space for 2 NH1 fuse switch disconnectors in a narrow 1PW field and is designed around a 3-pole busbar system. With a maximum module rated current of 630 A, 60 space units and compatibility with ABB ZH431 disconnectors, it provides a practical platform for professional CombiLine installations requiring fused switching and isolation of outgoing circuits.
Typical Applications
- Low-voltage sub-distribution boards.
- ABB CombiLine electrical distribution assemblies.
- NH1 fuse switch disconnector installations.
- Commercial and industrial electrical distribution cabinets.
- Fused outgoing feeder circuits.
- Electrical panel building requiring compact high-current fused distribution.
