Monster Fuses > Edison > CLASS RK Edison - Class RK RK5 - 250V - Time Delay - ECNR 1/10 - 600A RK5 - 600V - Time Delay - ECSR 1/10 - 600A RK1 - 250V - Time Delay - LENRK 2/10 - 600A RK1 - 600V - Time Delay - LESRK 1/4 - 600A RK1 - 250V - Fast Acting - NCLR 1 - 600A RK1 - 600V - Fast Acting - SCLR 1 - 600A