Siemens 52PL4L9 Illuminated Push Button Switch

Siemens 52PL4L9 is a 24V LED pilot light with an amber plastic lens, designed for Siemens 52-series 30 mm indicator assemblies used in control panels and automation equipment. It employs an integrated LED module and operates on 24V AC/DC, delivering a clear amber status signal when energised. The compact indicator is intended for panel mounting and pairs with Siemens’ family of illuminated push-button and indicator devices to provide rapid, visible feedback on machine or process status. This part is listed by UL and certified by CSA for standard electrical installations, underscoring its suitability for industrial environments. Common applications include signaling and status indication on automation panels, conveyors, and equipment where a durable amber indicator is required to convey warnings, standby, or fault conditions. The 52PL4L9 designation identifies a plastic-lens pilot light in Siemens’ pilot-light lineup, offering reliable illumination with minimal maintenance for long service in demanding industrial settings.