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Electrical - Power Fuses Low-Peak ® Time-Delay, Class L Fuses Bussmann ® KRP-C_SP Time-Delay – 4 seconds (minimum) at 500% rated current Ampere Ratings: 601-6000A† Voltage Rating: 600Vac (or less), 300Vdc for 601-2000A. Interrupting Rating: ac: 300,000A RMS Sym. dc: 100,000A Agency Information: UL Listed-Special Purpose (meets all performance requirements of UL Standard 248-10 for Class L fuses), Guide JFHR, File E56412 CSA Certified (200,000 AIR), Class 1422-02, File 53787, Class L per CSA C22.2, No. 248.10 Dimensions: See pages 2-3 for Class L dimensional data. Ordering Information Catalog Ctn. Weight** Number Qty. Lbs. Kg. KRP-C-601SP KRP-C-650SP KRP-C-700SP 1 3.75 1.7 KRP-C-750SP KRP-C-800SP KRP-C-801SP KRP-C-900SP KRP-C-1000SP 1 4.5 2.041 KRP-C-1100SP KRP-C-1200SP KRP-C-1350SP KRP-C-1400SP KRP-C-1500SP KRP-C-1600SP 1 6.50 2.948 Special purpose rating of 300,000 AIR. **Weight per carton. †Use KRP-CL for current ratings below 601A. Catalog Ctn. Weight** Number Qty. Lbs. Kg. KRP-C-1800SP KRP-C-1900SP 1 8.5 3.85 KRP-C-2000SP KRP-C-2001SP KRP-C-2400SP 1 17.25 7.824 KRP-C-2500SP KRP-C-3000SP 1 18.25 8.278 KRP-C-3500SP KRP-C-3800SP 1 23.50 10.659 KRP-C-4000SP KRP-C-4500SP 1 29 13.154 KRP-C-5000SP KRP-C-6000SP 1 36 16.329 O-RING SEALS Formation of arc gas within fuse body suppresses arcing; lowers arcing I 2 t energy. O-ring seals maximize pressure build-up during current limiting action. Also volume of sand is critical. Slight loss can adversely impact on current limiting action. O-ring seals insure filler retention. They compensate to a degree for switchgear misalignment, and expansion and contraction of mounting surfaces with change in load to no-load conditions. SAND FILLER High grade silica-sand filler. Accelerates response of fuse to short-circuits by having quenching effect upon the fuse arc. Substantially contributes to current limiting action. 99.9% PURE SILVER FUSELINKS Embody “silver-sand” design. 99.9% pure silver links; silicasand filler. The high conductivity of silver gives low watt loss and low operating temperature at normal current levels; minimizes total clearing I 2 t fault energy let-thru… state-of-art fuse design. High degree of current limitation holds down fault currents and levels of destructive energy. (Although other link materials can provide current limitation, they do not equal that of silver.) • All-purpose silver linked fuse for both overload and shortcircuit protection for high capacity systems (mains and large feeders). • Time-delay (minimum of four seconds at five times amp rating) for close sizing. • Current limiting action of the fuse generally affords considerable reduction in bus bracing. • Interrupting rating of 300,000 amperes complies with NEC Sections 110-9 and 230-65 for today’s large capacity systems. • O-ring seals maximize pressure build-up during current limiting action and ensure filler retention. • High grade silica-sand filler; accelerates response of fuse to short-circuits by having quenching effect upon the fuse arc. • 99.9% pure silver fuselinks. The high conductivity of silver gives low watt loss and low operating temperature at normal current levels; minimizes total clearing I 2 t fault energy let-thru. • Selective coordination (blackout prevention) • Glass melamine tube. • Silver plated end bells. • Reducers not necessary. CE logo denotes compliance with European Union Low Voltage Directive (50-1000Vac, 75-1500Vdc). Refer to Data Sheet: 8002 or contact Bussmann Application Engineering at 636-527-1270 for more information. Data Sheet: 1008 and 1009 6 For complete specification data, call Bussmann Information Fax ~ 636.527.1450
Electrical - Power Fuses Bussmann ® 7 Time-Current Characteristic Curves—Average Melt KRP-C TIME IN SECONDS 300 100 10 1 .1 800A 1200A 1600A 2000A 2500A 3000A 4000A 5000A 6000A AMPERE RATING Current Limitation Curves—KRP-C INSTANTANEOUS PEAK LET-THRU CURRENT IN AMPS 1000,000 100,000 10,000 A 1,000 1,000 Recommended Fuseblocks for Class L: (601–1200A) Catalog Number 51215 1 10,000 100,000 PROSPECTIVE SHORT CIRCUIT CURRENT SYMMETRICAL RMS AMPERES Poles 51235 3 Use KRP-CL for current ratings below 601A. 300,000 B 6,000A 5,000A 4,000A 3,000A 2,500A 2,000A 1,600A 1,200A 800A 601A AMPERE RATING .01 CURRENT IN AMPERES 1,000 10,000 100,000 200,000 KRP-CL Current Limiting, Time-Delay Construction: Glass Melamine Tube Ampere Ratings: 150-600A. Voltage Rating: 600Vac (or less) These fuses have the same performance characteristics as KRP-C fuses. They are used in applications where there is a need for Class L dimension fuses with 150-600A ratings. KRP-CL fuses have the same dimensions as 800A Class L fuses. Dimensions: See pages 2-3 for Class L dimensional data. Ordering Information Catalog Number (Symbol & Amps) KRP-CL-150 KRP-CL-300 KRP-CL-500 KRP-CL-200 KRP-CL-350 KRP-CL-600 KRP-CL-225 KRP-CL-400 KRP-CL-250 KRP-CL-450 Weight of each is 3.75 lbs. Data Sheet: 1016 For complete specification data, call Bussmann Information Fax ~ 636.527.1450
Page 1 and 2: Bussmann® Circuit Protection Solut
Page 3 and 4: Bussmann ® i Section Guide Page 1
Page 5 and 6: General Data — Selection Chart Bu
Page 7 and 8: General Data - Dimensions (Millimet
Page 9: Electrical - Power Fuses CUBEFUSE a
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Page 37 and 38: ⁄Ω¢∑ Diameter ≈ 1∑ Length
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Fuseblocks, Holders and and Disconn
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Overview for Fusible Disconnect Swi
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Handles & Shafts For 30A Fusible Di
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Accessories For 60A - 100A Fusible
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Accessories Bussmann ® For 200A -
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Overview Bussmann ® For Non-Fusibl
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Handles & Shafts Bussmann ® For 16
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400A - 800A Non-Fusible Disconnect
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Enclosed Fusible Disconnect Switche
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Other Configurations Bussmann ® fo
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Enclosed Non-Fusible Disconnect Swi
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Enclosed Non-Fusible Disconnect Swi
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Disconnect Switches Bussmann ® Fus
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High Speed Fuses North American Sty
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High Speed Fuses Bussmann ® North
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High Speed Fuses Bussmann ® Europe
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High Speed Fuses European Style Squ
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High Speed Fuses Fuse Bases (Blocks
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High Speed Fuses British Standard B
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High Speed Fuses Bussmann ® Ferrul
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Medium Voltage Fuses and Fuse Links
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Telpower ® DC Power Protection Sys
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Telecommunications Protection Fused
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Telecommunications Telpower ® DC P
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British, European, & Canadian Stand
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Fuse Accessories, Displays, Kits, E
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Fuse Technology Bussmann ® Circuit
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Fuse Technology Bussmann ® Operati
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Fuse Technology Bussmann ® Fuse Ti
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Fuse Diagnostic Chart Bussmann ® 2
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Time-Current & Current Limitation C
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Glossary of Terms Bussmann ® Ohm
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Index by Part Number Bussmann ® Ca
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CUBEFuse The World’s First “Fin
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