2CPX041321R9999 ABB MT245B NH2 Fuse Switch Expansion 2PW 630 A

Why Choose the ABB MT245B NH2 Fuse Switch Expansion 2PW?

The ABB MT245B, order code 2CPX041321R9999, is a populated NH2 fuse switch-disconnector expansion module designed for ABB CombiLine low-voltage sub-distribution systems. Supplied mounted for cabinet installation, it combines four ABB NH2 fuse switch-disconnectors with a 3-pole busbar system to provide reliable fused isolation and high-current power distribution within professional electrical assemblies.

Designed for demanding commercial and industrial distribution applications, the MT245B is populated with four ABB XLP NH2 fuse switch-disconnectors rated at 400 A and separator shutters. Its double-tier configuration supports a maximum rated current of 630 A, while the integrated 3-pole busbar system provides an efficient distribution arrangement for multiple fused outgoing circuits.

The MT245B occupies 2 panel widths (PW) and 5 grid units (GU), corresponding to 750 mm high × 500 mm wide with 120 space units (PLE). The module is suitable for cabinets from 225 mm deep 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.
• Supplied populated with four NH2 fuse switch-disconnectors.
• Each NH2 fuse switch-disconnector has a 400 A rating.
• 630 A maximum module rated current with double-tier busbar arrangement.
• Integrated 3-pole busbar system for professional power distribution.
• Separator shutters are included with the populated fuse switch-disconnector arrangement.
• Provides 120 space units (PLE) within a 2-panel-width format.
• Closed cabinet integration helps provide an organised and protected distribution assembly.

Key Features

• ABB MT245B NH2 fuse switch-disconnector module.
• ABB order code 2CPX041321R9999.
• Part of the ABB CombiLine interior expansion system.
• Populated with 4 × NH2 fuse switch-disconnectors.
• 400 A NH2 fuse switch-disconnectors.
• 630 A maximum module rated current.
• 3-pole busbar system.
• Supplied with separator shutters.
• 43 mm spacing from the front edge of the equipment to the cover.
• 2 panel widths (PW) and 5 grid units (GU).
• 120 space units (PLE).
• Plastic cover with equipment cut-out in RAL 7035 light grey.
• 90-degree push-turn cover fastener.
• Suitable for cabinets from 225 mm depth.
• Designed for a separately ordered WR mounting frame.

Reliable NH2 Fused Isolation for High-Current Distribution

NH fuse switch-disconnectors combine fuse protection with load isolation, enabling electrical circuits to be protected against overcurrent while providing a practical means of disconnecting outgoing circuits for operation or maintenance. The ABB MT245B integrates four NH2 fuse switch-disconnectors into a modular CombiLine assembly, simplifying the construction of multiple high-current fused outgoing circuits within a distribution cabinet.

The MT245B uses a double-tier 3-pole busbar arrangement with a maximum rated current of 630 A. Its four 400 A NH2 fuse switch-disconnectors, 120 space units and 2-panel-width construction make it particularly suitable for larger sub-distribution assemblies where multiple high-current fused feeders must be accommodated in an organised modular system.

Typical Applications

• Low-voltage electrical distribution boards.
• Commercial and industrial sub-distribution systems.
• ABB CombiLine cabinet assemblies.
• High-current fused outgoing circuits requiring NH2 protection.
• Industrial power distribution and circuit isolation.
• Electrical switchgear and distribution cabinets.
• Three-pole distribution systems requiring multiple fused feeders.