Bussmann® LOW-PEAK® LPN-RK Dual-Element, Time-Delay Fuses Class RK1 – 250 Volt ⁄Ω¡º-60A Dimensional Data 2" (± 0.31) 0.81" (± 0.008) 35A to 60A ⁄Ω¡ºA to 30A Catalog Symbol: LPN-RK_SP Dual-Element, Time-Delay – 10 seconds (minimum) at 500% rated current (8 seconds for 0-30A sizes) Current-Limiting Ampere Rating: ⁄Ω¡º to 60A Voltage Rating: 250Vac (or less) 125Vdc (or less) Interrupting Rating: AC: 300,000A RMS Sym. DC: 100,000 Amperes Agency Information: UL Listed – Special Purpose*, Guide JFHR, File E56412 CSA Certified (200,000AIR), Class 1422-02, File 53787 Class RK1 per CSA C22.2, No. 248.12 3" (± 0.31) 0.56" (± 0.008) Features: • Current-limitation for maximum short-circuit protection. • Type 2 protection for IEC and NEMA starters when properly sized. • High inrush current motor protection. • Time-delay permits 130% FLA sizing for back-up motor protection. • Protection against single-phase motor damage. • Low watt loss power consumption. • Electrically isolated end caps. • 125Vdc, UL Listed. Fuse Reducers For Class R Fuses Equipment Fuse Clips 60A 100A 200A Desired Fuse (Case) Size Catalog Number (Pairs) 250V 30A No. 263-R 30A No. 213-R 60A No. 216-R 60A No. 226-R *Meets all performance requirements of UL Standard 248-12 for Class RK1 fuses. Catalog Numbers LPN-RK-⁄Ω¡ºSP LPN-RK-2SP LPN-RK-9SP LPN-RK-⁄fiΩ¡ººSP LPN-RK-2⁄Ω¢SP LPN-RK-10SP LPN-RK-¤Ω¡ºSP LPN-RK-2⁄Ω™SP LPN-RK-12SP LPN-RK-‹Ω¡ºSP LPN-RK-2°Ω¡ºSP LPN-RK-15SP LPN-RK-›Ω¡ºSP LPN-RK-3SP LPN-RK-17⁄Ω™SP LPN-RK-⁄Ω™SP LPN-RK-3¤Ω¡ºSP LPN-RK-20SP LPN-RK-flΩ¡ºSP LPN-RK-3⁄Ω™SP LPN-RK-25SP LPN-RK-°Ω¡ºSP LPN-RK-4SP LPN-RK-30SP LPN-RK-1SP LPN-RK-4⁄Ω™SP LPN-RK-35SP LPN-RK-1⁄Ω•SP LPN-RK-5SP LPN-RK-40SP LPN-RK-1⁄Ω¢SP LPN-RK-5flΩ¡ºSP LPN-RK-45SP LPN-RK-1›Ω¡ºSP LPN-RK-6SP LPN-RK-50SP LPN-RK-1flΩ¡ºSP LPN-RK-6⁄Ω¢SP LPN-RK-60SP LPN-RK-1°Ω¡ºSP LPN-RK-8SP — Recommended fuseblocks for Class R 250V fuses See Data Sheet: 1110 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. Carton Quantity and Weight Ampere Ratings Weight** Carton Qty. Lbs. Kg. 0–30 10 0.5 0.227 35–60 10 1.2 0.544 **Weight per carton. 10-2-02 SB02295 Form No. LPN-RK 0-60 Page 1 of 2 Data Sheet: 1003 Bussmann® LOW-PEAK® LPN-RK AMPERE RATING 60A 4 6.25 300 30A AMPERE RATING 15A 20A 300 ⁄Ω¡º-60A Time-Current Characteristic Curves–Average Melt .1 .15 .2 .3 .4 .6 1 1.6 2.5 3.2 5 8 10 12 .5 .8 1.25 2 Dual-Element, Time-Delay Fuses Class RK1 – 250 Volt 100 100 1 10 1,000 100 1 .1 .01 10 .1 RMS SYMMETRICAL CURRENT IN AMPERES TIME IN SECONDS TIME IN SECONDS 10 1 B 400,000 10,000 30 .01 1,000 60 10,000 20 100,000 100 AMPERE RATING .1 RMS SYMMETRICAL CURRENT IN AMPERES 200,000 10,000 1,000 100,000 A 1,000 INSTANTANEOUS PEAK LET-THROUGH CURRENT IN AMPS Current-Limitation Curves RMS SYMMETRICAL CURRENTS IN AMPERES A–B=ASYMMETRICAL AVAILABLE PEAK (2.3 x SYMM RMS AMPS) 10-2-02 SB02295 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. LPN-RK 0-60 Page 2 of 2 Data Sheet: 1003