LPN-RK-70SPI COOPER | Alldatasheet

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Technical content

Low-Peak® LPN-RK_SPI Dual-Element Time-Delay Fuses 70-600A Class RK1 – 250 Volts AC/DC Form No. LPN-RK 70-600 Page 1 of 2 Data Sheet: 1066 Bussmann® Features:

  • Current limiting for maximum short-circuit protection.
  • Type 2 protection for IEC and NEMA starters when properly sized.
  • Permanent replacement fuse indication.
  • High in-rush current motor protection.
  • Time-delay that permits 130% FLA sizing for back-up motor protection.
  • Provides protection against single-phase motor damage.
  • Low watt loss power consumption.
  • Electrically isolated end caps.
  • 250Vdc, UL Listed. Applications:
  • Branch distribution
  • Motors
  • Transformers
  • Solenoids
  • General purpose circuits A B Catalog Symbol: LPN-RK_SPI Ampere Rating: 70 to 600A Voltage Ratings: ac: 250V (or less) dc: 250V (or less) Interrupting Ratings: ac: 300,000A RMS Sym. dc: 100,000A Agency Information: UL Listed–Special Purpose**, Guide JFHR, File E56412 CSA Certified, (200,000 AIR) Class 1422-02, File 53787, Class RK1 per CSA C22.2 No. 248.12 Dimensional Data NNEEWW DDEESSIIGG NN 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. Recommended fuseblocks for Class R 250V fuses See Data Sheet: 1110 8-26-04 SB04295 For non-indicating version, the LPN-RK_SP is available. See Data Sheet: 1004 Catalog Numbers LPN-RK-70SPI LPN-RK-150SPI LPN-RK-350SPI LPN-RK-80SPI LPN-RK-175SPI LPN-RK-400SPI LPN-RK-90SPI LPN-RK-200SPI LPN-RK-450SPI LPN-RK-100SPI LPN-RK-225SPI LPN-RK-500SPI LPN-RK-110SPI LPN-RK-250SPI LPN-RK-600SPI LPN-RK-125SPI LPN-RK-300SPI — Available with tin plate option. Add Suffix “-TP” (Ex.: LPN-RK-100SP-TP) Carton Quantity and Weight—LPN-RK (250Vac) Ampere Carton Weight* Ratings Qty. Lbs. Kg. 70–100 5 1.9 0.9 110–200 1 0.9 0.4 225–400 1 2.0 0.9 450–600 1 3.0 1.4 *Weight per carton. Meets all performance requirements of UL Standard 248-12 for Class RK1 fuses. Dimensions (inches) Ampere Ratings “A” “B” Fuse Reducers For Class R Fuses Desired Catalog Number Equipment Fuse (Case) (Pairs) Fuse Clips Size 600V 200A 100A No. 2621-R* 400A 100A No. 2641-R 200A No. 642-R 100A No. 2661-R 600A 200A No. 2662-R 400A No. 2664-R* *Single reducer only (pair not required). ***Reducer No. 2621-R does not apply to LPN-RK-70SP to LPN-RK-100SP Fuses. For additional information, see Data Sheet: 1118.

Low-Peak® LPN-RK_SPI Dual-Element Time-Delay Fuses 70-600A Class RK1 – 250 Volts AC/DC Form No. LPN-RK 70-600 Page 2 of 3 Data Sheet: 1066 Bussmann® Time-Current Characteristic Curves–Average Melt For information on the previous design LPN-RK 70-6009SP , see Data Sheet: 1048. 8-26-04 SB04295 NN EEWW DD EESSIIGG NN

Low-Peak® LPN-RK_SPI Dual-Element Time-Delay Fuses 70-600A Class RK1 – 250 Volts AC/DC Form No. LPN-RK 70-600 Page 3 of 3 Data Sheet: 1066 Bussmann® Current Limitation Curves The only controlled copy of this Data Sheet is the electronic read-only version located on the Bussmann Network Drive. All othe r 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 desig n 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 rig ht to change or update, without notice, any technical information con- tained in this bulletin. Once a product has been selected, it should be tested by the user in all possible applications. 8-26-04 SB04295 B A 600A 400A 200A 100A AMPERE RATING 400,000 100,000 1,000 INSTANTANEOUS PEAK LET-THROUGH CURRENT IN AMPERES 200,000 RMS SYMMETRICAL CURRENTS IN AMPERES 100,000 10,000 300,000 10,000 1,000 A-B=ASYMMETRICAL AVAILABLE PEAK (2.3 x SYMM RMS AMPS) Current-Limiting Effects Prosp. Let-Through Current (Apparent RMS S.C.C. Symmetrical) Versus Fuse Rating 100A 200A 400A 600A 5,000 2,100 3,150 5,000 5,000 10,000 2,600 3,950 6,900 9,250 15,000 2,950 4,500 7,650 10,250 20,000 3,200 4,900 8,350 11,050 25,000 3,350 5,300 8,850 11,750 30,000 3,550 5,600 9,300 12,250 35,000 3,750 5,850 9,700 12,800 40,000 3,900 6,150 10,050 13,250 50,000 4,150 6,600 10,700 14,050 60,000 4,400 7,000 11,250 14,750 80,000 4,750 7,650 12,200 15,850 100,000 5,050 8,250 12,950 16,800 150,000 5,700 9,400 14,500 18,650 200,000 6,200 10,300 15,700 20,100 250,000 6,600 11,050 16,700 21,250 300,000 7,000 11,750 17,550 22,350 *Values derived from curve data