The Littelfuse Inc. 721697-37216300001 is a circuit protection component that is used to protect devices from overloading. It is a through-hole mounting style fuse with a slow-blow response time. It has a voltage rating of 250V and a current rating of 6.3A. The 721697-37216300001 is approved by cURus, SEMKO, and VDE. This component is in balance supply and demand status.