Siemens 3SB3 647-0AA21 Illuminated Red Pushbutton

Siemens 3SB3 647-0AA21 is an illuminated red pushbutton designed for industrial control and signaling applications, providing clear visual indication and reliable manual actuation in control panels and operator stations. Manufacturer: Siemens AG Country of manufacture: Czech Republic Part number: 3SB3 647-0AA21 Product type: Illuminated pushbutton Series: 3SB3 (SIGNUM / SIRIUS ACT family) Actuator type: Pushbutton, momentary Illumination: Integrated lamp Lens color: Red Mounting diameter: 22 mm standard panel cutout Connection type: Screw terminals (contact block dependent) Rated insulation voltage (Ui): Up to 690 V Rated operational voltage: Typically 24 V AC/DC for illumination (lamp dependent) Lamp type: Replaceable bulb or LED module (depending on configuration) Mechanical life: High durability, typically >1 million operations Protection rating: IP65 (front panel, when properly installed) Housing / bezel material: Metal (chrome-plated) with plastic internal components Mounting type: Panel mount with mounting collar Operating temperature range: Approx. -25 °C to +70 °C Storage temperature range: Approx. -40 °C to +80 °C Shock and vibration resistance: Suitable for industrial environments Compliance: IEC/EN 60947-5-1 Weight: Approx. 100–150 g Applications: Control panels, machinery operation, signaling systems, industrial automation Features: Illuminated indication for status visibility, rugged metal construction, modular contact system compatibility, easy installation, long service life

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