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The SCHNEIDER ELECTRIC ZB4BD912 is a 22mm selector switch head and mounting base designed for use with 6mm shaft potentiometers in industrial and commercial control panel applications. Featuring white markings for clear operator identification, this component provides the mechanical interface between a potentiometer shaft and the panel cutout, allowing precise rotary control input in automation and electrical control systems. The unit ships as a complete head-and-base assembly, simplifying installation. Licensed electricians and industrial control panel builders are the typical installers for this type of component.
This selector switch head and mounting base is used in control panel builds and service replacements where a 22mm panel cutout is required. It is suited for industrial automation systems, motor control centers, and commercial electrical enclosures where a 6mm shaft potentiometer requires a panel-mounted interface. The white markings aid position identification in both new-build and retrofit scenarios.
Designed for use with 6mm shaft potentiometers requiring a 22mm panel mounting hole diameter. Specific compatible potentiometer and body series should be confirmed against SCHNEIDER ELECTRIC product documentation prior to ordering.
Installation is typically performed by a licensed electrician or qualified control panel technician. De-energize the control panel and follow applicable NFPA 70 (NEC) lockout/tagout procedures before beginning work. Verify the panel cutout is 22mm and that the mating potentiometer has a 6mm shaft before assembly. Do not force the head onto the shaft, as this may damage the potentiometer or the mounting base.
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