The BK1/HTC-55M is a panel-mount fuse holder designed for 5 x 20mm fuses, featuring a bayonet cap/carrier mechanism for secure fuse retention. It is constructed with tin-plated brass terminals and a high-temperature thermoplastic body that meets UL 94V0 flammability standards and passes glow wire testing at 960°C per IEC 695-2-1. The holder is rated for 250 Vac with a current rating of 10A (UR) or 6.3A (VDE), operating at an ambient temperature of 24°C with a maximum temperature rise of 43°C and maximum operating temperature of 85°C. The device features shock safety of PC2 classification and complies with RoHS 2002/95/EC regulations. This fuse holder is ideal for industrial control panels, power distribution systems, and equipment requiring reliable overcurrent protection with easy fuse replacement.