The AZ 17/170-B5 is a safety switch manufactured by Schmersal, mainly used to prevent accidental starting or enable safe separation of hazardous machine components, such as motors and other drive systems. It is equipped with flexible keys that are secured against unauthorized changes by an additional lockable fastening system. This product is built with a snap-action contact system and features a protective circuit designed to prevent arcing or sparking of hazardous or explosive materials. The terms of IEC and VDE standards are complied with, with a high-strength contact system designed to prevent wear and offer optimal signal transfer. The adjustable reset time is designed to be short, while the opening angle is abbreviated to secure safe shut-off. The AZ 17/170-B5 is designed with a cover made of stainless steel, allowing flexible mounting onto most surfaces.