DHM3 Double Safety Electro Magnetic Brakes,is power off A,voltage:24V Dc B,torque ... power:15W~200W D,speed:5000 DHM5 Double Safety Electro Magnetic Brakes,is power off spring supply,A,voltage:24V DcB ... 40.50.50.6We use the finest material available for magnetic components to yield high friction indexes, as well as premium ... extend useful life. DHM3-80S Spring Applied Double Safety Electro Magnetic Brake