For over 90 years, Castell has designed, developed and manufactured safety systems for warehouse, packaging and process applications. As the original key interlock manufacturer, our wealth of experience and high quality product ensures you and your workforce are kept safe, while maintaining production efficiency. Key interlocking systems have been developed for applications such as loading dock safety, palletizers, conveyors, mixers, slicers, robot cells and various machine guarding applications where isolation is required prior to access. Key interlocking is a permanent safe alternative to lockout tagout and approved as such within ANSI/ASSE Z244.10 regulations.