The Bussmann series TCF100 Low-Peak CUBEFuse is a finger-safe UL Class CF current-limiting, dual-element, time-delay branch circuit fuse and fuse holder system; 10 seconds minimum operating time at 500% rated amps. With Class J electrical performance, the time-delay fuse is available in indicating and non-indicating versions. The indicating version features local easyID™ open fuse technology for faster troubleshooting and reduced downtime. This finger-safe fuse has a very compact, space-saving size and is easily applied using the CUBEFuse holder, UL 98 Compact Circuit Protector switch or Compact Circuit Protector Base (CCP2B up to 100 A) used in the Quik-Spec™ Coordination Panelboard. Bussmann series Low-Peak™ ultimate protection fuses are the industry's only UL® Listed and CSA® Certified fuses with a 300 kA interrupting rating. This means they provide 50% more protection than any other listed fuse on the market*. They work by rapidly interrupting the flow of electrical current before it completes its first cycle which significantly reduces risk and protects your valuable equipment with the best technology available*. The high interrupting rating allows for simple, worry-free installation in virtually any application. These low-peak fuses can also save money and space since one of these Low-Peak fuses can replace multiple fuses in a variety of applications. *50% higher IR (300kA) than any other UL and CSA fuse. Includes Class J, L, and R fuses.