Siemens 3SB3400-3C Actuator

Siemens 3SB3400-3C is an actuator-/indicator component that mounts on a lamp holder, designed for use with Siemens 3SB3 front-panel assemblies. This accessory can act as a mechanical actuator or an illuminated indicator when paired with compatible lamp-holders and contact blocks in control panels, providing visual feedback alongside actuation in industrial equipment. The 3SB3400-3C variant identifies a specific lamp-holder configuration within the 3SB3 family, intended for integrated signaling in front-panel installations. Typical applications include operator interfaces in machine controls, control panels, and industrial switchgear where a lit indicator accompanies an actuator function. Siemens documentation classifies the part as an actuator-/indicator component for lamp-holder mounting, ensuring compatible mechanical fit and electrical interface within the 3SB3 ecosystem.