Siemens 8WD4 420-5AF Sirius Continuous Light Element

Siemens SIRIUS 8WD4 continuous light element, blue, model 8WD4 420-5AF, is a compact LED signaling lamp designed for use with SIRIUS signaling columns. It provides continuous blue illumination from a 24 V AC/DC supply with a maximum current draw of 30 mA and an LED life of up to 100,000 hours. The housing is polycarbonate (PC), 50 mm in outer diameter, 67 mm tall and 52 mm wide, and it uses a bayonet fastening for secure installation. It carries IP54 protection and operates across ambient temperatures from -20 to +50 °C. Typical light output is 0.12 cd, with a practical range of 0.08–0.18 cd, making it suitable for status indication and warning signaling in industrial environments.