2CPX041135R9999 ABB MK314 Terminal Expansion Module 3PW

Why Choose the ABB MK314 Terminal Expansion Module?

The ABB MK314 is a factory-assembled vertical terminal expansion module designed for the ABB CombiLine internal mounting system used in low-voltage distribution cabinets. Supplied under ABB order code 2CPX041135R9999, it provides a large, structured mounting area for terminal blocks and associated wiring within compatible sub-distribution assemblies.

The MK314 is configured for 3 panel widths (3 PW), giving a field width of 750 mm, and has a module height of 600 mm. Its 4 RE format provides 144 space units, making it particularly suitable for distribution panels requiring substantial terminal capacity while maintaining an organised modular cabinet layout.

The module incorporates vertically arranged 35 × 15 mm DIN rails with perforations for wire holders. For the 3 PW configuration, the rail assembly includes an additional stabilisation profile, while continuously adjustable mounting allows a usable depth of 66–113 mm. The available terminal mounting height is 591 mm, and the module can be used in compatible cabinets from 200 mm depth.

Key Advantages

• Large-format vertical terminal expansion module for ABB distribution systems.
• 3 PW configuration provides extensive terminal mounting capacity.
• 750 mm field width for integration into compatible CombiLine assemblies.
• 144 space units support high-density terminal arrangements.
• Vertical 35 × 15 mm DIN rails provide standardised terminal mounting.
• Additional stabilisation profile supports the wide 3 PW DIN rail arrangement.
• Continuously adjustable mounting depth provides flexibility during panel construction.
• 591 mm usable terminal height supports extensive wiring and termination requirements.

Key Features

• ABB CombiLine internal mounting system.
• 3 panel widths (3 PW).
• 4 raster units (4 RE).
• 600 mm module height.
• 750 mm field width.
• 144 space units.
• Vertical 35 × 15 mm DIN rails.
• DIN rail perforations for wire-holder installation.
• Additional stabilisation profile for the 3 PW rail assembly.
• 66–113 mm usable depth range.
• 591 mm usable terminal mounting height.
• Suitable for grounded and insulated installation arrangements.
• Closed plastic covers finished in RAL 7035.
• 90-degree press-and-turn cover closure.

Reliable Terminal Expansion for Distribution Systems

Terminal expansion modules provide dedicated internal mounting space for the terminal blocks used to terminate, distribute and organise conductors within low-voltage electrical assemblies. The ABB MK314 combines a wide 3 PW format with vertically arranged DIN rails, helping panel builders create structured terminal layouts with substantial capacity for control and distribution wiring.

Its continuously adjustable rail depth allows the terminal mounting position to be adapted to the requirements of the installation, while the additional stabilisation profile supports the wider rail arrangement. As part of the modular ABB CombiLine system, the MK314 provides a coordinated solution for building accessible, organised and serviceable distribution assemblies.

Typical Applications

• Low-voltage sub-distribution boards.
• ABB CombiLine distribution assemblies.
• Large terminal block sections within electrical cabinets.
• Commercial building electrical distribution systems.
• Industrial power distribution panels.
• Control and automation cabinet terminal sections.
• Panel-building applications requiring high terminal capacity.