General Data — Selection Chart Bussmann

1 Buss Fuse Selection Chart (600 Volts or Less)Circuit LoadAmpere FuseSymbol VoltageInterruptingRemarksRating TypeRating (a-c) ClassRatingPage(KA)Conventional Dimensions class RK1, RK5 (0-600A), L (601-6000A)All type loads0-600 ALOW-PEAK LPN-RK_SP250 VRK1 300 All-purpose (optimum(dual-element,LPS-RK_SP600 VUnequaled for combinedovercurrenttime-delay)short-circ uit andprotection).601 toLOW-PEAK KRP-C_SP600VL300overload (time-delay)(Specification grade product)Motors, welder,0 FUSETRON FRN-R250 VRK5 200 Moderate degree of12transformers,to(dual-element,FRS-R60 0 Vcurrent limitation.)

2 Time-delay13capacitor banks600 Atime-delay)passes surge currents.(circuits with heavy0 DURA-LAGTMDLN-R250 VRK520014inrush currents).to(dual-element,DLS-R600V600 Atime-delay)601 toLIMITRON KLU600VL200 All-purpose fuse. Time-8 Main,4000A(time-delay)delay passes loadsKTN-R250 VRK1 200 Same short-circuit protection15and(circuits with no0 KTS-R600 Vas LOW-PEAK fuses butBranchheavy inrushtomust be sized larger forcurrents).600 ALIMITRON circuits with surge-currents;LIMITRON fuses_____(fast-acting) , up to 300%.particularly suited for601 toKTU600VL200A fast acting, high8circuit breaker6000 Aperformance Dimensions For Installation in Restricted Space class J(0-600A), T(0-1200A), CC(0-30A), G(0-60A)All type loadsLOW-PEAK LPJ_SP600VJ300 All-purpose (optimum(dual-elementUnequaled for combinedovercurrenttime-delay)short-circ uit and overloadprotection).

3 0protection. (Specification _____tograde product)Non-motor loads600 ALIMITRON JKS600VJ200 Very similar to KTS-R18(circuits with no (quick acting)LIMITRON, but inrush0 toT-TRONTMJJN300VT200 The space saver ( the size19currents).1200 AJJS600 Vof KTN-R/KTS-R).Motor loads0 to 30A LOW-PEAK LP-CC600 VCC200 Rejection feature21(circuits with (time-delay)heavy in-rushcurrents.)Non-motor loads0 to 30A LIMITRON KTK-R600 VCC200 Very compact ( 1 );22(circuits with no(fast-acting)rejection in-rushBranchcurrents.)Control transformer0 to 30A TRON FNQ-R600 VCC200 Excellent for control22circuits and lighting(time-delay)transformer ; purpose;1 to 20A SCSC600VG100 Current limiting; , lighting dia.

4 Varyingpanel to 60A480 Vlengths per amp toONE-TIMENON250VH or K5 10 Forerunners of16600 ANOS600 Vthe modernPlug fuses can 0 FUSTAT S125VS10 Base threads of Type S26be used forto(dual-element,differ with amp ratings. branch circuits30 Atime-delay)T and W have Edison base. and smallFUSETRON T125V**10T & S fuses recommended component(dual-element,for motor circuits. W )recommended for circuitsBuss Type WW125V**10with motor loads.** UL Listed as Edison Base Plug Fuse. Some ampere ratings are available as UL class K5 with a 50,000A interrupting rating.

5 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). Bussmann 1 General Data Selection Chart200,000A or 300,000A Interrupting Rating (rms symmetrical)Current Limiting10,000 50,000 AICG eneralPurpose(non-currentlimitingfuses) Courtesy of Steven Engineering, Inc.

6 ! 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 2 ABCLASS TT- Tr o n FusesJJN (300V)JJS (600V) class JLow-Peak & Limitron FusesLPJ & JKS (600V) class L Low-Peak & Limitron FusesKRP-C, KTU, & KLU (601 - 6000A) (600V)NOTE: KRP-CL (150A to 600A) fuseshave same dimensions as 601A to800A case size. KTU (200A to 600A)have same dimensions, except tube3 lgth. 2 dia.; terminal 1fi/ width 1 / RK5 & RK1 Fusetron , Low-Peak &Limitron Fuses (250V & 600V)FRN-R LPN-RK KTN-R & KTS-RBasic dimensions are same as class H (for-merly NEC) ONE-TIME (NON & NOS) andSUPERLAG Renewable RES & REN : These fuses can be used to replaceexisting class H, RK1 and RK5 fuses relatingto dimensional -302.

7 56 5 .81 35-603 .81 Fusetron & AB 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 ! Bussmann General Data Dimensions (Millimeters)3 ABCLASS TT- Tr o n FusesJJN (300V)JJS (600V) class JLow-Peak & Limitron FusesLPJ & JKS (600V) class L Low-Peak & Limitron FusesKRP-C, KTU, & KLU (601 - 6000A) (600V)NOTE: KRP-CL (150A to 600A) fuseshave same dimensions as 601A to800A case size.

8 KTU (200A to 600A)have same dimensions, except lgth. x dia.; terminal41,3mm width x RK5 & RK1 Fusetron , Low-Peak &Limitron Fuses (250V & 600V)FRN-R LPN-RK KTN-R & KTS-RBasic dimensions are same as class H (for-merly NEC) ONE-TIME (NON & NOS) andSUPERLAG Renewable RES & REN : These fuses can be used to replaceexisting class H, RK1 and RK5 fuses relatingto dimensional & Courtesy of Steven Engineering, Inc.

9 ! 230 Ryan Way, South San Francisco, CA 94080-6370 ! Main Office: (650) 588-9200 ! Outside Local Area: (800) 258-9200 !