Features: • Fuse reducers install on fuses and permit smaller size fuses to be used in larger amp size switches and blocks. • Reducers will fit into any panel or switch including the dead-front type. • Strong contact is maintained both mechanically and electrically. • UL Listed. • There are no reducers to go from 250V to 600V. • There are no reducers for switching from one fuse class to another. • There are no reducers for Class T or Class L fuses.