Fast-acting, low breaking capacity Optional axial leads available 5mm x 20mm physical size Glass tube, nickel-plated (500mA-15A) brass end cap construction Designed to UL/CSA 248-14 Bussmann gma-6a buss small dimension fuse 051712716710. Please get informed! You can replace a 125V fuse with a 250V fuse of equal amperage as long as the application voltage is 250V or less. Fuses are designed to protect over-current, not over-voltage. Therefore as long as the fuse amperage is sized appropriately and as long as your fuse voltage meets or exceeds your application voltage the fuse will safely protect. With the past of time fuses are getting higher and higher voltages, but with no changes in amps. This is part of the advance of the technology.