High-Capacity Rating: Rated at 250V and 400A, this Fusetron FRN-R-400 fuse provides reliable overcurrent protection. Time-Delay Design: With its RK time-delay classification, it allows temporary harmless overcurrents while protecting against sustained overloads. Versatile Application: Suitable for various industrial, commercial, and residential electrical systems requiring high-amperage fusing. Compact Size: Its compact dimensions facilitate easy installation in space-constrained environments. Durable Construction: Crafted for longevity, this fuse ensures consistent performance over an extended service life. The FUSETRON FRN-R-400 Fuse is a heavy-duty, time-delay fuse designed for industrial applications. Rated at 250V and 400A, this Class RK fuse offers reliable overcurrent protection, allowing temporary surges while minimizing nuisance outages. Its time-delay feature prevents unnecessary interruptions, ensuring continuous operation under temporary overload conditions. Constructed with high-quality materials, this fuse delivers exceptional performance and longevity. With its robust design and high current capacity, the FRN-R-400 is ideal for protecting motors, transformers, and other critical electrical equipment. Ensure safe and efficient power distribution with this dependable fuse from FUSETRON.