WERMA 641.200.00 641.100.00 641.300.00 Stack Lights

WERMA 641 Series Stack Light Elements (MPN 641.200.00 / 641.100.00 / 641.300.00) are modular visual status indicators designed for industrial signaling and machine-status indication in automation and safety-controlled environments. They install as stack light modules or panel-mounted units in control panels, automation equipment, production machinery, and signaling towers, providing clear red, green, and yellow visual cues to show current equipment state. Operating voltage ranges from 12 to 240 VAC/DC, with IP65 protection for dust and water exposure, ensuring reliable operation in harsh factory settings. Commonly used for industrial signaling and status indication in automation systems, these elements support dependable monitoring of machine status and warnings, and they can serve as replacements or retrofits for existing signaling systems. Related replacements include Allen-Bradley 855T stack light modules and Schneider Electric XVBC series signal light modules.