Siemens 3BS3644-6BA40 Indicator Light Green 24V

Siemens 3SB3644-6BA40 is a 22 mm round indicator light built as a complete unit with a metal enclosure, designed for panel mounting in industrial control panels and machines. The green LED indicator features a lens with concentric rings for clear visibility, and the assembly includes a lampholder and holder for secure installation. It uses an integrated LED and operates on AC or DC 24V via screw terminals, simplifying field wiring with a robust screw-connection design. The metal front and durable housing provide protection in demanding environments, while the 22 mm diameter fits standard cutouts across Siemens 3SB/Sirius installations. This indicator light is ideal for signaling statuses such as ready or run in automation cabinets, where a green indication is used to denote normal operation. The 3SB3644-6BA40 variant combines the indicator light, lens, and complete mounting hardware into a single ready-to-install unit, reducing assembly steps and ensuring consistent illumination across panels when paired with compatible lampholders and holders from Siemens.