Table

Class RK1 vs RK5 Fuse Comparison

Class RK1 vs RK5 Fuse Comparison lookup table with assumptions and boundary notes.

Scope

Class comparison planning only. It does not permit swapping fuse classes, confirm rejection features, or determine let-through performance for equipment.

Lookup table

Compare common Class RK1 and RK5 fuse label characteristics without choosing a replacement.

Scroll sideways to keep row labels aligned with hidden columns.

Lookup basis uses manufacturer RK1/RK5 comparison literature; product curves govern actual let-through and coordination details.
Fuse classCommon voltage labelsLet-through lookupLabel cuesBoundary
Class RK1250 V, 600 Vlower let-through lookupRK1 often emphasizes lower let-through than RK5 in comparison literatureComparison planning only; product curves govern actual behavior
Class RK5250 V, 600 VHigher let-through lookupRK5 often emphasizes more compact/industrial usage in comparison literatureComparison planning only; product curves govern actual behavior
Class RK family250 V, 600 VRejection-family contextRK labels are read together with holder and product-family markingsComparison planning only; holder and equipment labels govern compatibility
Notes
  • Check table values for preliminary lookup and arithmetic checks only.
  • Confirm equipment ratings, product markings, installation conditions, utility requirements, and the local authority requirements before design or field use.