Siemens 3SB3647-0AA51-0CC0 Illuminated Pushbutton

Siemens 3SB3647-0AA51-0CC0 is a 22 mm metal-round complete-unit illuminated pushbutton that combines a flat blue actuator with an integrated LED for visible status indication in panel installations; the robust metal housing and 22 mm diameter support compact, durable control interfaces, while the flat-button design keeps the operator face flush with the panel surface to minimize snag hazards in tight enclosures. The switch is momentary-contact, providing 1 normally open and 1 normally closed contact (1NO+1NC), and it uses a spring-loaded terminal for quick, secure wiring; the built-in LED is designed for 24 V AC/DC operation, and the assembly includes a holder for straightforward mounting. In operation, the blue illumination provides immediate visual feedback linked to the circuit's state, helping operators confirm actions in dim or cluttered environments, with the 3SB3647-0AA51-0CC0's compact footprint supporting clean integration alongside other 22 mm components in a control panel.