Siemens 52PL4E2 Red Oil Tight Pilot Light Switch

Siemens 52PL4E2 Red Oil Tight Pilot Light Switch is a 30 mm panel‑mount indicator light from the Siemens Class 52 family, designed to show a clear red status signal on industrial control panels. It uses a full‑voltage incandescent lamp rated for 120 VAC, providing a bright, readily visible indicator in dim or cluttered environments. The oil‑tight variant of this family is built for harsh surroundings and is commonly listed as 52PL4E2XB, offering water and oil protection to sustain visibility and reliability where oil, moisture, or splashes are present. Wiring employs screw‑type terminals for straightforward connections to control circuits, and the unit fits into a standard 30 mm cutout for quick installation within existing panel layouts. Typical applications include machine control panels for conveyors, pumps, presses, and automation equipment, where a compact red pilot light communicates run, fault, or other critical statuses at a glance. The device’s compact footprint conserves panel space while delivering robust indicator performance, and it integrates with other 52 Series controls to create cohesive signaling within a single control station.