Industrial Product Portfolio
Learn about our fuses and fuse holders, protection relays, electronic controls, surge protective devices, auxiliary switches, and temperature sensors.

Littelfuse industrial GFCI protection with Shock Block® ground fault circuit interrupters are engineered to protect personnel from electrical shock in demanding industrial environments. Our Shock Block GFCI solutions, including the UL-listed SB5000 series provide reliable ground fault protection through a safety-by-design approach. We also offer portable GFCI units like the LB100 and SB100B for rental applications. Littelfuse GFCIs are a critical safeguard for reducing the risk of serious injury or fatality in high-risk work areas.