The 32 Models of the Bussmann HTB fuse holder offer complete design flexibility. Their reduced size permits maximum space utilization. Their appearance is compatible with aesthetically designed equipment. Designed to UL, CSA and IEC (SEMKO and VDE) standards. The HTB-4 offers high profile while the HTB-2 offers a low profile mounting option. The HTB-6 mounts through rear of panel permitting wire connections to be made to holder before mounting in panel. The HTB-8 provides fast, easy and secure mounting without tools or hardware. Terminal options include in-line or right angle solder 3/16" quick-connect and in-line or right angle 1/4" quick-connect. The HTB Series will accept both 1/4" × 1 1/4" and 5 mm × 20 mm fuses simply by changing the carriers. 250 Volts.