Proton A3 is designed for frequent use in the small office, home office environment. It has a 10 sheet cutting capacity and uses encapsulated SafeCutT cartridges which only expose the blade when trimming, ensuring greater safety in use. An integrated storage facility ensures blade cartridges can be kept with the machine and a paper clamp minimises paper movement, enabling a more accurate finish. The Proton A3 paper trimmer is manufactured with a durable metal base and comes with a 2 year warranty