Siemens 52PE3D3U Illuminated Push-Pull Transformer

Siemens 52PE3D3U Illuminated Push-Pull Transformer is a three-position control device that combines a green-illuminated push-pull actuator with an integrated transformer, designed for 24–28 V AC/DC operation. The unit features a momentary action (pull to start, push to stop) and a 1 3/4-inch (44.5 mm) mushroom head that fits standard panel openings for clear visibility in control panels. This transformer-enabled variant powers the indicator lighting and drives the associated circuit within a compact form factor, making it suitable for industrial equipment where reliable tactile input and status indication are required in tight spaces. Ideal applications include machine control stations, process control panels, and safety interlock setups that benefit from integrated illumination and a compact, durable push-button interface. It is commonly used alongside other Siemens illuminated push-button controls to create cohesive operator interfaces in automation panels.