HWA is a specialty fuse holder designed for sub-miniature pin-base fuses in limited space applications, rated for 125 Volts AC or less. The holder features a transparent window for visual determination of open fuse elements and is constructed from diallyl phthalate material for the body and knob. It includes an "O"-ring, gasket, and nut, and can be soldered directly into circuits; the HWA-AF variant includes a waterproof cap (knob). The holder accommodates fuse ratings from 1/100 A to 5 A with an interrupting rating of 35 A, making it suitable for compact electronic assemblies requiring reliable overcurrent protection and easy fuse replacement.