Siemens 52PX4D3Y Pilot Light Indicator Assembly

Siemens 52PX4D3Y Pilot Light Indicator Assembly is a green LED panel-mount pilot light intended for 24 V signaling on electrical control panels and automation equipment. Listed as a 24 V LED pilot light (FV, LED) in Siemens’ 52P family, this indicator provides visible status indication in industrial environments where quick recognition of a machine’s state is required. The assembly is designed for panel mounting and is compatible with standard Siemens signaling devices, offering a durable, long-life LED source compared with traditional incandescent indicators. Typical applications include start/stop signaling, process alarms, and panel status indicators on manufacturing lines and machine controls. The 52PX4D3Y designation corresponds to a green LED variant with 24 V operation, as confirmed by Siemens and distributor catalogs that show LED green indicators at 24 V in the same product lineup. In the broader family, LED variants such as 52PL4D3XY and incandescent options like 52PL4D3 illustrate the range of 24 V pilot lights available from Siemens, enabling engineers to choose LED or incandescent while maintaining same form factor and mounting style.