FX0430/63 16A Manual Cap Panel Mount Fuse Holder for 5 x 20mm. Bulgin captive drawer fuseholders are designed to give the degree of protection demanded in today’s sophisticated electronic equipment. These fuseholders carry world-wide safety approvals from UL, VDE, CSA and IMQ and are manufactured from high grade flame retardant nylon and polyester materials. Bulgin captive drawer fuseholders are designed for 5x20mm fuses and feature protection against shock to category PC3, whilst the captive drawer design allows for even more flexibility and ease of use.