The Littelfuse 23121000029 is a miniature fuse specifically engineered for semiconductor protection in high-voltage circuits. Its compact 6.3x32mm size makes it ideal for space-constrained applications, while its very quick acting (FF) characteristic ensures rapid response to overcurrent conditions. The fuse is designed for use in pluggable clips or shocksafe holders, simplifying installation and maintenance. With a voltage rating of 500V and a high breaking capacity, this fuse provides reliable circuit protection in various industrial and consumer electronics applications. Consider de-rating at higher ambient temperatures. Littelfuse continues to deliver circuit protection solutions through the WICKMANN Group portfolio.