Bussmann Limitron KTN-R Fast-Acting Fuses 1-600A 250 Volt Dimensional Data 2 ( 0.31) .56 ( 0.008) 1/10A to 30A 3 ( 0.31) .81 ( 0.008) 35A to 60A 5.88 ( 0.062) 1.06 ( 0.008) 70A to 100A 7.13 ( 0.062) 1.56 ( 0.008) 110A to 200A 8.63 ( 0.094) Catalog Symbol: KTN-R (250V) Fast-Acting 2.06 ( 0.008) Current-Limiting 225A to 400A Ampere Rating: 1 to 600A 10.38 ( 0.094) Voltage Rating: 250 ac Vac (or less)* Interrupting Rating: 200,000A RMS Sym. 2.59 ( 0.008) Tube Material: Glass Melamine End Caps: 70/30 Brass 450A to 600A Operating Temp.: 40C to +85C Carton Quantity and Weight (250Vac)* Storage Temp.: 55C to +85C Weight** Carton Agency Information: Amps Qty. Lbs. Kg. UL Listed, Std. 248-12, Class RK1, Guide JDDZ, File E54273 130 10 0.45 0.204 4060 10 1.82 0.824 CSA Certified, C22.2 No. 248.12, Class 1422-02, File 53787 70100 5 1.85 0.838 *0-600A is rated 250Vdc and 10 KAIC. 110200 1 1.05 0.476 Catalog Numbers 225400 1 2.38 1.078 KTN-R-1 KTN-R-30 KTN-R-125 450600 1 3.50 1.587 Contact Bussmann for dc ratings. KTN-R-2 KTN-R-35 KTN-R-150 * Weight per carton. ** KTN-R-3 KTN-R-40 KTN-R-175 KTN-R-4 KTN-R-45 KTN-R-200 KTN-R-5 KTN-R-50 KTN-R-225 General Information: KTN-R-6 KTN-R-60 KTN-R-250 Single-element, fast-acting fuses with minimal time-delay. KTN-R-8 KTN-R-70 KTN-R-300 Provides a high degree of short-circuit current-limitation KTN-R-10 KTN-R-75 KTN-R-350 (component protection). KTN-R-12 KTN-R-80 KTN-R-400 Particularly suited for circuits and loads with no heavy surge KTN-R-15 KTN-R-90 KTN-R-450 currents of motors, transformers, solenoids, and welders. KTN-R-20 KTN-R-100 KTN-R-500 LIMITRON fuses are commonly used to protect circuit KTN-R-25 KTN-R-110 KTN-R-600 breakers with lower interrupting ratings. If used in circuits with surge currents (motors, etc.) must be CE logo denotes compliance with European Union Low Voltage Directive sized to prevent unwanted opening and thus only provide (50-1000Vac, 75-1500Vdc). Refer to Data Sheet: 8002 or contact short-circuit protection. Bussmann Application Engineering at 314-527-1270 for more information. Incorporate Class R rejection feature. Can be inserted in non-rejection type fuseholders. Thus, can physically and Recommended fuseblocks for electrically replace fast-acting Class H, K1, K5, RK5, and Class R 250V fuses other fast-acting fuses. See Data Sheet: 1110 Form No. KTN-R Page 1 of 2 10-2-02 Data Sheet: 1043 SB02295 Bussmann Limitron KTN-R Fast-Acting Fuses 1-600A 250 Volt Current-Limitation Curves Time-Current Characteristic CurvesAverage Melt B 400,000 AMPERE RATING 300 100,000 100 600 400 200 100 10,000 60 10 30 A 1,000 1 RMS SYMMETRICAL CURRENTS IN AMPERES AB=ASYMMETRICAL AVAILABLE PEAK (2.3 x SYMM RMS AMPS) Class R (600V) Catalog Data (Clip Retaining Spring Standard, Suffix R) Terminal Type (Suffix No.) .1 Screw w/ Box Lug w/ Basic 1/49 Catalog Pres. Clip Quick Amps Poles Number Plate CU only Connect 1 R25030-1 SR PR CR COR QR* to 2 R25030-2 SR PR CR COR QR* 30 3 R25030-3 SR PR CR COR QR* 1 R25030-1 SR PR CR COR QR* to 2 R25030-2 SR PR CR COR QR* 30 3 R25030-3 SR PR CR COR QR* .01 1 1 R25060-1 SR* PR CR COR to 2 R25060-2 SR* PR CR COR 60 3 R25060-3 SR* PR CR COR 61 1 R25100-1 CR COR to 2 R25100-2 CR COR RMS SYMMETRICAL CURRENT IN AMPERES 100 3 R25100-3 CR COR 101 1 R25200-1 CR COR to 3 R25200-3 CR COR 200 201 1 R25400-1 CR* COR* to 3 R25400-3 CR COR* 400 401 1 R25600-1 CR to 3 R25600-3 CR 600 *UL Recognized, No CSA Certification. The only controlled copy of this Data Sheet is the electronic read-only version located on the Bussmann Network Drive. All other copies of this document are by definition uncontrolled. This bulletin is intended to clearly present comprehensive product data and provide technical information that will help the end user with design applications. Bussmann reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Bussmann also reserves the right to change or update, without notice, any technical information contained in this bulletin. Once a product has been selected, it should be tested by the user in all possible applications. Form No. KTN-R Page 2 of 2 10-2-02 SB02295 Data Sheet: 1043 INSTANTANEOUS PEAK LET-THROUGH CURRENT IN AMPS 1,000 10,000 100,000 200,000 AMPERE RATING TIME IN SECONDS 40 30A 60A 100 100A 200A 400A 600A 1,000 10,000