Siemens 6FX1135-7BB01 Circuit Breaker Assembly

Siemens 6FX1135-7BB01 is a SINUMERIK 810 coupling module that operates as the master PLC within older SINUMERIK 810 control architectures. Specifically aligned to SINUMERIK 810 Basic Version 2 configurations, this module provides two interfaces to enable communication between the main controller and auxiliary hardware, effectively bridging the control CPU with connected I/O and subsystems. Used in retrofits, repairs, and service replacements for legacy Siemens CNC installations, it functions as a central integration point that preserves the functional hierarchy of the SINUMERIK 810 system while allowing continued operation of the machine tool. The listing identifies the part as 6FX1135-7BB01 and ties it to the SINUMERIK 810 family, a modular approach Siemens used to scale control networks in older equipment. When selecting this component, verify the exact SINUMERIK 810 Basic Version 2 configuration and the intended interfaces in the machine’s service documentation to ensure proper compatibility and firmware alignment. Available from specialized distributors and repair vendors that stock legacy SINUMERIK parts, 6FX1135-7BB01 is a targeted option for technicians maintaining or restoring Siemens CNC equipment.