General Data — Selection Chart Bussmann

1 General Data Selection Chart Bussmann Buss Fuse Selection Chart (600 Volts or Less). Circuit Load Ampere Fuse Symbol Voltage Interrupting Remarks Rating Type Rating (a-c) Class Rating Page (KA). Conventional Dimensions Class RK1, RK5 (0-600A), L (601-6000A). All type loads 0-600A LOW-PEAK LPN-RK_SP 250V RK1 300 All-purpose fuses. 9-11. (optimum (dual-element, LPS-RK_SP 600V Unequaled for combined overcurrent time-delay) short-circuit and protection). 601 to LOW-PEAK KRP-C_SP 600V L 300 overload protection. 6-7. 6000A (time-delay) (Specification grade product). Motors, welder, 0 FUSETRON FRN-R 250V RK5 200 Moderate degree of 12. transformers, to (dual-element, FRS-R 600V current limitation. Time-delay 13. capacitor banks 600A time-delay) passes surge currents. 200,000A or 300,000A Interrupting Rating (rms symmetrical). (circuits with heavy 0 DURA-LAGTM DLN-R 250V RK5 200 14. inrush currents). to (dual-element, DLS-R 600V. 600A time-delay). 601 to LIMITRON KLU 600V L 200 All-purpose fuse.

2 Time- 8. Main, 4000A (time-delay) delay passes surge-currents. Feeder Non-motor loads KTN-R 250V RK1 200 Same short-circuit protection 15. and (circuits with no 0 KTS-R 600V as LOW-PEAK fuses but Branch heavy inrush to must be sized larger for currents). 600A circuits with surge-currents;. Current Limiting LIMITRON . LIMITRON fuses _____ (fast-acting) , up to 300%. particularly suited for 601 to KTU 600V L 200 A fast acting, high 8. circuit breaker 6000A performance fuse. protection. Reduced Dimensions For Installation in Restricted Space Class J(0-600A), T(0-1200A), CC(0-30A), G(0-60A). All type loads LOW-PEAK LPJ_SP 600V J 300 All-purpose fuses. 17. (optimum (dual-element Unequaled for combined overcurrent time-delay) short-circuit and overload protection). 0 protection. (Specification _____ to grade product). Non-motor loads 600A LIMITRON JKS 600V J 200 Very similar to KTS-R 18. (circuits with no (quick acting) LIMITRON, but smaller. heavy inrush 0 to T-TRONTM JJN 300V T 200 The space saver ( the size 19.))

3 Currents). 1200A JJS 600V of KTN-R/KTS-R). Motor loads 0 to 30A LOW-PEAK LP-CC 600V CC 200 Rejection feature 21. (circuits with (time-delay). heavy in-rush currents.). Non-motor loads 0 to 30A LIMITRON KTK-R 600V CC 200 Very compact ( 1 ); 22. (circuits with no (fast-acting) rejection feature. heavy in-rush Branch currents.). Control transformer 0 to 30A TRON FNQ-R 600V CC 200 Excellent for control 22. circuits and lighting (time-delay) transformer protection. ballasts; etc. General purpose; 1 to 20A SC SC 600V G 100 Current limiting; 20. , lighting dia. varying panel boards. 25 to 60A 480V lengths per amp rating. Miscellaneous 0 to ONE-TIME NON 250V H or K5 10 Forerunners of 16. 600A NOS 600V the modern 10,000 50,000 AIC. General Plug fuses can 0 FUSTAT S 125V S 10 Base threads of Type S 26. Purpose be used for to (dual-element, differ with amp ratings. (non- branch circuits 30A time-delay) T and W have Edison base. current limiting and small FUSETRON T 125V ** 10 T & S fuses recommended fuses) component (dual-element, for motor circuits.

4 W not 26. protection. time-delay) recommended for circuits with motor loads. Buss Type W W 125V ** 10. ** UL Listed as Edison Base Plug Fuse. Some ampere ratings are available as UL Class K5 with a 50,000A interrupting rating. RK1 and RK5 fuses fit standard switches, fuseblocks and holders; however, the rejection feature of class R switches and fuseblocks designed specifically for rejection type fuses (RK1 and RK5) prevent the insertion of the non-rejection fuses (K1, K5, and H). 1. Courtesy of Steven Engineering, Inc. ! 230 Ryan Way, South San Francisco, CA 94080-6370 ! Main Office: (650) 588-9200 ! Outside Local Area: (800) 258-9200 ! . General Data Dimensions (Inches) Bussmann CLASS T CLASS J CLASS RK5 & RK1. T-Tron Fuses Low-Peak & Limitron Fuses Fusetron , Low-Peak &. JJN (300V) JJS (600V) LPJ & JKS (600V) Limitron Fuses (250V & 600V). FRN-R LPN-RK KTN-R & KTS-R. Basic dimensions are same as Class H (for- merly NEC) ONE-TIME (NON & NOS) and SUPERLAG Renewable RES & REN fuses. NOTE: These fuses can be used to replace existing Class H, RK1 and RK5 fuses relating to dimensional compatibility.

5 A. B. 250V 600V. Ampere A B A B. -30 2 .56 5 .81 . 35-60 3 .81 . A. B. Fusetron & Limitron 250V 600V. Ampere A B A B. 70-100 . 110-200 . 225-400 . 450-600 . Low-Peak 250V 600V. Ampere A B A B. 70-100 . 110-200 . 225-400 . 450-600 . CLASS L Low-Peak & Limitron Fuses KRP-C, KTU, & KLU (601 - 6000A) (600V). NOTE: KRP-CL (150A to 600A) fuses have same dimensions as 601A to 800A case size. KTU (200A to 600A). have same dimensions, except tube 3 lgth. 2 dia.; terminal 1 / width 1 / thick. 2. Courtesy of Steven Engineering, Inc. ! 230 Ryan Way, South San Francisco, CA 94080-6370 ! Main Office: (650) 588-9200 ! Outside Local Area: (800) 258-9200 ! . General Data Dimensions (Millimeters) Bussmann CLASS T CLASS J CLASS RK5 & RK1. T-Tron Fuses Low-Peak & Limitron Fuses Fusetron , Low-Peak &. JJN (300V) JJS (600V) LPJ & JKS (600V) Limitron Fuses (250V & 600V). FRN-R LPN-RK KTN-R & KTS-R. Basic dimensions are same as Class H (for- merly NEC) ONE-TIME (NON & NOS) and SUPERLAG Renewable RES & REN fuses.

6 NOTE: These fuses can be used to replace existing Class H, RK1 and RK5 fuses relating to dimensional compatibility. A. B. 250V 600V. Ampere A B A B. -30 35-60 A. B. Fusetron & Limitron 250V 600V. Ampere A B A B. 70-100 110-200 225-400 450-600 Low-Peak 250V 600V. Ampere A B A B. 70-100 110-200 225-400 450-600 CLASS L Low-Peak & Limitron Fuses KRP-C, KTU, & KLU (601 - 6000A) (600V). NOTE: KRP-CL (150A to 600A) fuses have same dimensions as 601A to 800A case size. KTU (200A to 600A). have same dimensions, except tube lgth. x dia.; terminal 41,3mm width x thick. 3. Courtesy of Steven Engineering, Inc. ! 230 Ryan Way, South San Francisco, CA 94080-6370 ! Main Office: (650) 588-9200 ! Outside Local Area: (800) 258-9200 !