Why Choose the ABB MT344B NH2 Fuse Switch Expansion Module?
The ABB MT344B, order code 2CPX041319R9999, is a mounted and equipped NH2 fuse switch disconnector expansion module designed for ABB CombiLine electrical distribution systems. Part of ABB’s DESUJ Sub Distribution product group, it provides a complete solution for integrating NH2 fused switching and isolation into commercial and industrial sub-distribution cabinets.
The MT344B is equipped with three ABB NH2 fuse switch disconnectors and incorporates a 3-pole busbar system. Designed for NH2 fuse switch disconnectors rated up to 400 A, the assembly has a maximum rated current of 440 A in its single-storey configuration, providing robust fused distribution for higher-current electrical circuits.
With a module height of 3 GU / 450 mm, a panel width of 3 PW / 750 mm and 108 space units, the MT344B provides three NH2 disconnector positions within the ABB CombiLine modular system. It is suitable for cabinets from 225 mm depth and is designed for installation on a compatible WR mounting frame, which must be ordered separately.
Key Advantages
- Complete NH2 fuse switch disconnector expansion module for ABB CombiLine systems.
- Equipped with three NH2 fuse switch disconnectors.
- Designed for NH2 fuse switch disconnectors rated up to 400 A.
- 3-pole busbar system with a maximum rated current of 440 A in the single-storey configuration.
- 3 PW / 750 mm panel width with 108 space units for structured power distribution.
- Plastic covers with equipment cut-outs and secure 90-degree press-and-turn closures.
Key Features
- ABB MT344B CombiLine NH2 fuse switch disconnector module.
- ABB order code 2CPX041319R9999.
- 3 GU / 450 mm module height.
- 3 PW / 750 mm panel width.
- 108 space units.
- Equipped with three NH2 fuse switch disconnectors.
- ABB NH2 fuse switch disconnector equipment.
- 3-pole busbar system.
- 440 A maximum rated current in single-storey configuration.
- Plastic covers with dedicated equipment cut-outs.
- 90-degree press-and-turn cover closure.
- RAL 7035 light grey finish.
- Suitable for cabinets from 225 mm depth.
- Designed for ABB WR mounting frames, ordered separately.
Reliable NH2 Fused Power Distribution
NH2 fuse switch disconnectors combine fuse protection with switching and isolation functions for higher-current electrical distribution circuits. The ABB MT344B provides three integrated NH2 disconnector positions and the associated 3-pole busbar infrastructure within a modular CombiLine assembly, helping panel builders create organised and serviceable fused outgoing circuits.
The MT344B is supplied equipped with three NH2 fuse switch disconnectors, reducing the amount of component selection and assembly required when building the distribution system. Its 440 A maximum rated current, 750 mm panel width and WR mounting-frame compatibility make it well suited to substantial commercial and industrial sub-distribution applications.
Typical Applications
- Commercial and industrial sub-distribution boards.
- ABB CombiLine electrical cabinet assemblies.
- NH2 fused outgoing circuits.
- High-current electrical distribution systems.
- Industrial switchgear and control cabinets.
- Panel building and modular power distribution installations.
