Siemens 52PP2W2AP Emergency Stop Push Button Switch

Siemens 52PP2W2AP is a 30.5 mm, heavy‑duty emergency stop push‑button switch featuring a red mushroom head, chrome front ring, and a non‑illuminated operating style. This push‑pull device is a two‑position maintained switch with a 1NO‑1NC contact arrangement and pull‑to‑release capability, designed for reliable, fail‑safe stoppage of industrial equipment. The unit uses a watertight/oiltight metal operator and carries UL Listed and CSA Certified markings, with an IP66 protection rating for harsh environments and washdown applications. The assembly supports key safety standards including NEMA 1, 3, 3R, 4, 4X, 12, and 13, making it suitable for conveyors, presses, and other machinery where a robust, clearly visible emergency stop is required. The 30.5 mm command size aligns with standard mounting provisions in Siemens’ 52‑series family, and the 2‑position maintained configuration ensures the button remains in the actuated state until it is reset.