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The SIEMENS 3SB3203-0BA21 is a 22mm plastic pushbutton actuator designed for industrial control panel applications. This momentary-style operator mounts into standard 22mm cutouts and serves as the front-facing actuator component in a modular pushbutton assembly. Electrically, it pairs with a separate contact block to complete the switching circuit. Electricians and panel builders install this part during new panel construction or as a direct replacement of a worn or damaged actuator on existing operator stations.
This actuator is suited for use in industrial control panels, machine operator interfaces, and automation enclosures where a 22mm panel mount standard is in use. It is appropriate for both new installations and retrofit projects. The plastic construction keeps the assembly lightweight and suitable for general-purpose dry or protected environments. Industrial electricians and control panel integrators are the typical installers of this component.
Designed as an OEM-style replacement actuator for 22mm modular pushbutton assemblies in industrial control panel applications.
Installation should be performed by a qualified electrician with the panel de-energized and locked out per NFPA 70E lockout/tagout procedures before any work begins. The actuator snaps or threads into a standard 22mm panel cutout; confirm the cutout diameter before installation. A compatible contact block must be mounted separately to the rear of the actuator to complete the operator assembly. Do not exceed the rated environmental or mechanical specifications of the actuator body.
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