Pepperl+Fuchs MBHC-FB-4R is a four-segment redundant FieldConnex Power Hub motherboard that links FOUNDATION Fieldbus H1 segments to a general-purpose host interface. Integrated segment termination, redundant power-module positions, fault signaling and support for optional diagnostics provide a maintainable physical-layer platform for process automation systems.
The DIN-rail motherboard is rated for 19.2 to 35 V supply operation and up to 12 A, with each fieldbus segment isolated from the others. It is intended for approved Zone 2 or Division 2 installations when assembled with compatible FieldConnex power and diagnostic modules in accordance with the official documentation.
MBHC-FB-4R is compatible with the documented FieldConnex Power Hub power modules and optional diagnostic modules for FOUNDATION Fieldbus H1 systems. Confirm the motherboard revision, host-interface connection, terminal option and approved hazardous-area configuration before replacement.
Pepperl+Fuchs lists MBHC-FB-4R as a FieldConnex Power Hub motherboard. Before replacement, record the complete order code and terminal style, isolate power where required, preserve each segment connection and confirm compatibility with the installed power and diagnostic modules. Use the current manufacturer documentation and approvals for any Zone 2 or Division 2 installation. Do not substitute a different motherboard only because the segment count appears similar.

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