Littelfuse Shock Block® industrial GFCIs for shock protection in demanding environments are engineered to provide reliable shock protection for personnel in industrial settings. Designed to meet UL 943C requirements for special-purpose ground fault protection, these industrial GFCIs help prevent electrical injuries in high-risk environments. The product lineup within the SB5000 series is UL-listed. When safety is critical, Littelfuse offers trusted industrial GFCI solutions built for maximum protection and performance.