The JM60200-1CR is a single-pole Class J modular ferrule fuse block designed for 110–200 ampere applications in electrical panel and system designs. This fuse block features a standard fuse clip reinforcing spring for enhanced electrical contact, a toolless interlocking modular design for easy point-of-use assembly, and DIN-rail or panel mounting flexibility on each pole. The block accommodates copper conductors from 10–14 AWG or aluminum conductors from 10–12 AWG, with a recommended torque specification of 4.0 N-m (35 lb-in). It includes standard phase barriers for additional safety, optional snap-on covers for visual inspection, optional open fuse indication for faster troubleshooting, and lockout/tagout features to improve safety. The modular design reduces inventory and assembly time while maintaining the smallest width dimension on the market for space-efficient panel layouts.