Ferraz Class R Fuses meet or exceed all requirements of their class, and by extension, exceed those of older Classes H, K1 and K5.
Their higher level of performance makes them an ideal overload and short-circuit protection for transformers, motors, and generally all circuits with high in-rush currents.
Ferraz RK1 offers the highest level of protection for all applications as defined by the N.E.C.
250VAC to 600VAC
1A TO 600A
300,000A I.R. for RK1
200,000A I.R. for RK5
CSA Certified Current limiting Time delay Dual-element Rejection feature (Compatible with class H holders)