Electronic Supply by Industrial Electronics in Milwaukee Wisconsin : Potter Brumfield, Radio Shack Stores in Milwaukee: KTN-R LIMITRON™ Class RK1 250V Fast-Acting Fuses KTN-R LIMITRON™ Class RK1 250V Fast-Acting Fuses ================================================================================ synscon on 03/06/2015 06:03:00 Description: Advanced protection Class RK1 current-limiting, fast-acting fuses. Catalog Symbol: KTN-R-(amp) Ratings: Volts: 250Vac; 250Vdc (70-600A) Amps: 1-600A IR: 200kA Vac RMS Sym. 100kA Vdc Agency Information: UL Listed, Std. 248-12, Class RK1, Guide JDDZ, File E4273 CSA Certified, C22.2 No. 248.12, Class 1422-02, File 53787 Catalog Numbers (amps) KTN-R-1 KTN-R-10 KTN-R-40 KTN-R-100 KTN-R-250 KTN-R-2 KTN-R-12 KTN-R-45 KTN-R-110 KTN-R-300 KTN-R-3 KTN-R-15 KTN-R-50 KTN-R-125 KTN-R-350 KTN-R-4 KTN-R-20 KTN-R-60 KTN-R-150 KTN-R-400 KTN-R-5 KTN-R-25 KTN-R-70 KTN-R-175 KTN-R-450 KTN-R-6 KTN-R-30 KTN-R-80 KTN-R-200 KTN-R-500 KTN-R-8 KTN-R-35 KTN-R-90 KTN-R-225 KTN-R-600 Dimensions – in Features: * Single-element, fast-acting fuses with minimal time-delay * Provides a high degree of short-circuit current-limitation (component protection) * Particularly suited for circuits and loads with no heavy surge currents of motors, transformers, solenoids and welders * Commonly used to protect circuit breakers with lower interrupting ratings * If used in circuits with surge currents (motors, etc.) must be sized to prevent unwanted opening and thus only provide short-circuit protection * Incorporate Class R rejection feature. Can be inserted in non-rejection type fuse holders to physically and electrically replace fast-acting Class H, K1, K5, RK5, and other fastacting fuses. Recommended Fuse Blocks Fuse Amps 1-Pole 2-Pole 3-Pole 0-30 H25030-1 H25030-2 H25030-3 R25030-1 R25030-2 R25030-3 35-60 H25060-1 H25060-2 H25060-3 R25060-1 R25060-2 R25060-3 70-100 RM25100-1CR RM25100-2CR RM25100-3CR 110-200 RM25200-1CR RM25200-2CR RM25200-3CR 225-400 RM25400-1CR RM25400-2CR RM25400-3CR 450-600 RM25600-1CR RM25600-2CR RM25600-3CR Fuse Reducers For Class R Fuses Equipment Fuse Clips Desired Fuse (Case)Size Catalog Numbers (Pairs)250V 60A 30A NO.263-R 100A 30A NO.213-R 60A NO.216-R 200A 60A NO.226-R 200A 100A NO.2621-R 400A 100A NO.2641-R 200A NO.642-R 600A 100A NO.2661-R 200A NO.2662-R 400A NO.2664-R† † Single reducer only (pair not required) Time-Current Curves - Average Melt Current-Limitation Curves