Why Choose the ABB MBT342 NH1 Fuse Switch Expansion 3PW?
The ABB MBT342 is an unassembled NH1 fuse switch disconnector expansion module designed for ABB CombiLine N modular distribution assemblies. Supplied under ABB order code 2CPX041778R9999, it provides the mounting infrastructure required to integrate three NH1 fuse switch disconnectors into compatible low-voltage distribution boards and cabinets.
The MBT342 is designed for three ABB ZH431 NH1 fuse switch disconnectors, each rated up to 250 A, and incorporates provision for a 3-pole busbar system. The module supports a maximum rated current of 440 A in its single-level busbar configuration, providing a structured solution for fused outgoing power distribution.
With a height of 450 mm, width of 750 mm and depth of 225 mm, the MBT342 corresponds to a 3 RE × 3 PW configuration and provides 108 space units. RAL 7035 plastic covers with equipment cut-outs and 90-degree push-turn fasteners complete the assembly, while the required NH1 fuse switch disconnectors, busbar components and WR mounting frame are ordered separately.
Key Advantages
- Purpose-designed NH1 fuse switch expansion for ABB CombiLine N systems.
- Provides mounting capacity for three NH1 fuse switch disconnectors.
- Designed for ABB ZH431 250 A NH1 fuse switch disconnectors.
- Provision for a 3-pole busbar system with M10 connections.
- Maximum module rated current of 440 A.
- 3 PW / 750 mm width provides 108 space units for structured fused distribution.
Key Features
- ABB MBT342 NH1 fuse switch expansion module.
- ABB order code 2CPX041778R9999.
- Part of the ABB CombiLine N interior expansion system.
- Supplied as an unassembled and unpopulated kit.
- 3 RE / 450 mm height.
- 3 PW / 750 mm width.
- 225 mm depth.
- 108 space units.
- Prepared for 3 × NH1 fuse switch disconnectors.
- Designed for ABB ZH431 fuse switch disconnectors.
- Fuse switch disconnector rating up to 250 A each.
- 3-pole busbar system.
- M10 busbar connection.
- Maximum module rated current of 440 A.
- Plastic covers with equipment cut-outs.
- RAL 7035 cover finish.
- 90-degree push-turn cover fasteners.
- Suitable for cabinets from 225 mm depth.
- Designed for installation on a WR mounting frame.
- WR mounting frame must be ordered separately.
NH Fuse Protection and Power Distribution for Electrical Assemblies
NH fuse switch disconnector modules such as the ABB MBT342 provide a structured method of integrating high-capacity fuse protection and switching into low-voltage distribution assemblies. The module accommodates three compatible NH1 fuse switch disconnectors in conjunction with a three-pole busbar system, supporting protected outgoing circuits while maintaining an organised modular panel layout.
The ABB CombiLine N system uses standardised interior components to create configurable distribution assemblies. With provision for three 250 A NH1 fuse switch disconnectors, a maximum module rated current of 440 A and a 3 PW configuration, the MBT342 provides a practical solution for multi-circuit fused power distribution in commercial and industrial switchboards.
Typical Applications
- ABB CombiLine N modular distribution assemblies.
- NH1 fused outgoing distribution circuits.
- Commercial and industrial sub-distribution boards.
- Low-voltage electrical distribution cabinets.
- Panel-building and switchboard applications.
- Three-phase fused power-distribution systems.
