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ABB MB21 is a Hartmann & Braun Contronic plug-in module designed for integration within a compatible industrial control cabinet.
Use the complete MB21 label and any visible 0776125-family reference to distinguish the required module configuration and suffix.
Before replacement, verify the connector keying, rack position, board population, adjacent modules, assigned circuit role, and applicable cabinet drawings.
ABB MB21 H&B Contronic Plug-in Module Manuals, Product Family, Links
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Before installation, match the complete label, suffix, connector keying, board population, and rack position. Record the wiring, settings, and operating state, then verify the connected circuit using the applicable cabinet drawings.





