Siemens AG 52PP2W2A Emergency Stop Push Button

The Siemens 52PP2W2A Emergency Stop Push Button is a 30 mm, non-illuminated push-pull emergency stop switch with a red mushroom actuator and chrome-plated metal housing, designed for heavy-duty industrial use. It is a two-position maintained device featuring a pull-to-release mechanism and UL Listed, CSA Certified safety contacts, compatible with EN 60947-5-5 requirements for electrical emergency stop devices. The actuator head is a round mushroom style with a diameter of about 44.5 mm (1 3/4 in), and the unit is built with a watertight/oiltight metal operator and a metal front ring. This model carries NEMA 1, 3, 3R, 4, 4X, 12, 13 ratings and is intended for machinery safety circuits where an explicit, self-latching stop is required.