Siemens Industry, Inc. 3SB3400-24VDC Lamp Socket

Siemens 3SB3400-1PC is a 22 mm illuminated unit from the Signum 3SB3 family, featuring an integrated LED that mounts in a front-panel cutout. It operates from 24 V AC or DC and uses screw-terminal connections for the lamp supply, designed for front-panel mounting on 22 mm pushbutton assemblies. The green LED indicator provides a compact, maintenance-free illumination solution for control panels, and the 3SB3400 series is specified as a lampholder/indicator component with integrated LED. This variant is sold as a green 24 V AC/DC lamp holder with screw terminals and front-panel fixing, suitable for status indication alongside other 3SB3 actuators and indicators.