2CPX041778R9999 ABB MBT342 NH1 Fuse Switch Expansion 3PW

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.