Fuse holder with Copper crimp load or line terminal type. Breakaway version quickly disconnects line side during pole knockdown in compliance with state and federal highway commission standards. 3 o-rings per pole for water tight applications, High heat, impact resistant insulator. Wire gauge size identified on insulation boots for quick, accurate trimming. Time delay for motor starting and transformer inrush. This fuse is used with street lighting, parking lot lighting, traffic signalling, sports lighting, boats and marinas, humid/corrosive environments.