The KTN-R-10 is a LIMITRON™ Class RK1 fast-acting fuse designed for 250Vac circuits with a 10-ampere rating and 200kA interrupting rating (RMS symmetrical). This single-element fuse provides minimal time-delay operation and a high degree of short-circuit current-limitation for component protection, making it particularly suited for circuits with minimal surge currents. The fuse incorporates Class R rejection features and can physically and electrically replace fast-acting Class H, K1, K5, RK5, and other fast-acting fuses in non-rejection type fuse holders. It is UL Listed (Standard 248-12, Class RK1) and CSA Certified, making it ideal for protecting circuit breakers with lower interrupting ratings and for general industrial circuit protection applications.