The Bussmann series HM25030-3SR is 3-pole, 10/32 Phil-shot screw terminal type Class H(K) modular fuse block that enhances safety for any panel or electrical system design. The block is equipped with a fuse clip reinforcing spring to minimize temperature rise while maintaining reliable surface contact between the fuse and clip over the block's service life. The up to 30 amp ferrule fuse block saves panel space with the smallest width dimension on the market and feature DIN-Rail and panel mount versatility. All blocks are available with optional IP20 finger-safe high clarity, see-through covers for inspecting wire terminations or thermography measurements without removal. All covers enhance safety by featuring probe holes for easier, safer testing and a lockout/tagout capability. These covers also have optional open fuse indication to speed troubleshooting.