Appication: The DHM3 brake is fricative brakes, which are auto-matically set to work when an AC power lost occurts.They are mainly used with Y series motort to create YEJ series three-phase motors. it' s widely applicable in machine tools and in machineries for metal-lurgy, construction, chemistry, food-prompt and accurate braking effect. Because of its small size, light weight, low noise and high reliab-ility, it is widely accepeted as an ideal piece of automation equipment .It can be add protection circle to increase protection grade: IP54.