Why Choose the ABB MBT243 NH1 Fuse Switch Expansion?
The ABB MBT243 is a CombiLine NH1 fuse switch disconnector expansion module designed for use within ABB low-voltage sub-distribution assemblies. Supplied under ABB order code 2CPX041780R9999, 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 MBT243 is supplied as an unassembled and unequipped internal installation module prepared for the installation of 4 NH1 fuse switch disconnectors. It is intended for compatible ABB ZH431 NH1 fuse switch disconnectors rated up to 250 A and uses a 3-pole busbar system. The module is designed for a maximum rated current of 630 A in its double-storey arrangement, with the fuse switch disconnectors and associated busbar components ordered separately.
With a height of 750 mm, a 2PW field width of 500 mm and 120 space units, the MBT243 provides substantial capacity for four NH1 fuse switch disconnectors. It is suitable for cabinets from 225 mm depth and is designed for installation on a compatible ABB WR mounting frame, which must be ordered separately.
Key Advantages
- Purpose-designed ABB CombiLine module for NH1 fuse switch disconnectors.
- Provides installation capacity for 4 NH1 fuse switch disconnectors within a 2PW field.
- 3-pole busbar system supports structured low-voltage power distribution.
- Maximum module rated current of 630 A for the double-storey arrangement.
- 120 space units provide substantial installation capacity within the 500 mm-wide field.
- Designed for integration with a compatible ABB WR mounting frame.
Key Features
- ABB MBT243 CombiLine internal installation module.
- Designed for NH1 fuse switch disconnectors.
- Unequipped module for installation of 4 NH1 devices.
- Compatible with ABB ZH431 250 A NH1 fuse switch disconnectors.
- 2 panel width (2PW) configuration.
- 5 grid units (5GU).
- 750 mm module height.
- 500 mm field width.
- 120 space units.
- 3-pole busbar system.
- 630 A maximum rated current.
- Plastic covers with device cut-outs.
- 90-degree press-and-turn cover fasteners.
- RAL 7035 light grey finish.
- Suitable for cabinets from 225 mm depth.
- Compatible with a WR mounting frame, 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 multiple devices into a structured distribution board while maintaining an organised and accessible panel layout.
The ABB MBT243 provides space for 4 NH1 fuse switch disconnectors within a 2PW field and is designed around a 3-pole busbar system. With a maximum module rated current of 630 A, 120 space units and compatibility with ABB ZH431 disconnectors, it provides a practical platform for professional CombiLine installations requiring multiple fused 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.
- Multiple fused outgoing feeder circuits.
- Electrical panel building requiring high-current fused distribution and isolation.
