Why Choose the ABB MH250 S700/750 Expansion 2PW?
The ABB MH250, order code 2CPX041338R9999, is a mounted CombiLine N S700 main circuit breaker expansion module designed for ABB electrical sub-distribution systems. Part of the ABB CombiLine N interior expansion system and the DESUJ Sub Distribution product group, it provides a purpose-designed installation platform for ABB S700 selective main circuit breakers within professional low-voltage distribution cabinets.
The MH250 has a 2 RE / 300 mm height and a two-field width of 500 mm, providing 48 space units. It is supplied unequipped for compatible ABB S700 main circuit breakers from one to four poles, with each pole occupying 35 mm, and provides useful equipment widths of 210 mm / 105 mm across its two-field configuration.
The module incorporates a four-pole horizontal busbar arrangement with a 40 mm busbar centre distance and ABB ZB5 busbar holders. It accommodates up to five copper busbars, which must be ordered separately, and supports a maximum rated current of 250 A. Plastic covers with equipment cut-outs, 90-degree press-and-turn closures and a RAL 7035 light-grey finish complete the assembly, while the MH250 is suitable from a cabinet depth of 200 mm.
Key Advantages
- Purpose-designed CombiLine N S700 expansion module for professional sub-distribution systems.
- Suitable for ABB S700 selective main circuit breakers from one to four poles.
- Maximum rated current of 250 A.
- Four-pole horizontal busbar system with a 40 mm centre distance.
- ABB ZB5 busbar holders support structured conductor positioning.
- Accommodates up to five copper busbars.
- Two-field-width, 500 mm design with 48 space units.
- Compatible with both ABB EDF and WR mounting frames.
Key Features
- ABB CombiLine N interior expansion system.
- MH250 mounted S700/S750 expansion module.
- 2 RE / 300 mm module height.
- 2 panel widths / 500 mm overall width.
- 48 space units.
- 210 mm / 105 mm useful equipment widths.
- Unequipped for installation of compatible ABB S700 main circuit breakers.
- Supports 1- to 4-pole S700 devices with 35 mm width per pole.
- 250 A maximum rated current.
- 400 V AC rated operational voltage.
- 690 V rated insulation voltage.
- 6 kV rated impulse withstand voltage.
- 74 kA rated peak withstand current.
- 40 mm busbar centre distance.
- Maximum of five copper busbars.
- Plastic covers with cut-outs and 90-degree press-and-turn closures.
Structured S700 Main Circuit Breaker Integration
Main circuit breaker modules provide a coordinated mounting and busbar interface for incoming or distribution switching devices within low-voltage assemblies. The ABB MH250 combines dedicated installation space for ABB S700 selective main circuit breakers with a four-pole horizontal busbar arrangement, allowing compatible protection equipment to be incorporated cleanly into a CombiLine N cabinet.
With a maximum rated current of 250 A, a 40 mm busbar centre distance and a 500 mm two-field-width configuration, the MH250 provides greater installation capacity than single-field modules while retaining the modular architecture of the CombiLine N system. Compatibility with EDF and WR mounting frames provides additional flexibility when configuring professional commercial and industrial distribution assemblies.
Typical Applications
- Commercial and industrial sub-distribution boards.
- ABB S700 selective main circuit breaker installations.
- Incoming and distribution switching assemblies.
- Electrical distribution cabinets and switchboards.
- Low-voltage power distribution systems.
- Building-services electrical distribution.
- ABB CombiLine N cabinet expansion and interior fit-out.
