Siemens 3SB3 501-0AA41, which is an illuminated green flat pushbutton operator. [1, 2]

• Series: SIRIUS 3SB3 (Modular 22 mm metal round signaling devices).

• Function: Momentary contact type, designed for standard industrial command applications.

• Components: Contains a round silver metal front ring and includes a mounting holder for 3 electrical contact or lamp elements.