The BK/HFA is a waterproof in-line fuseholder designed for 1/4" x 1-1/4" (6.35mm x 31.8mm) fuses, featuring a crimp terminal connection suitable for exposed locations. It accepts #16 to #12 copper wire with copper, tin-plated crimp lead material and is rated at 250V and 20A. The fuseholder body is constructed from high-temperature, flame-retardant phenolic material meeting UL 94 HB standards, with a temperature rating (RTI) of 150°C, and is UL recognized (IZLT2, E14853) when used with No. 12 AWG copper conductors and appropriate crimping tools. This product is ideal for applications requiring reliable fuse protection in harsh or wet environments, such as automotive, marine, and industrial equipment where waterproof connections and high-temperature stability are essential.