Allen-Bradley 855E-10DN6 Stacklight Base Unit

855E-10DN6 is a blue 50 mm light module for Allen-Bradley Stack Light assemblies, designed as the blue indicator element in a control-tower signaling stack. It uses a steady incandescent lamp and is specified for 120V AC full-voltage operation, making it compatible with standard North American power supplies in automation panels. The module features a 50 mm lens and is listed by Rockwell Automation as an active product, with engineering resources such as a 3D STEP model and a 2D drawing available to aid installation and integration. This part is marketed under the Rockwell Allen-Bradley catalog as a Light Module 50 mm Stack Light and forms part of a scalable signaling system used across industrial automation setups.