If you're tasked with dealing with electrical installations in industrial control applications, you've probably used DIN rail, have heard about DIN rails, or have read about DIN rail mounted products, like terminal blocks or contractors. While DIN rails have been around for quite a while now, and there's plenty of information about DIN rail mountable products, there hasn't been much discussion about the backbone of the system - the DIN rail itself. By understanding DIN rail applications in control environments, such as foot prints, materials available, options, etc. new and old users can have an easier time taking advantage of this industry standard.