BULLET™ CLASS RK5 DUAL ELEMENT TIME-DELAY FUSES Catalog Number ECNR (.1 - 600A) 250 Volts AC or Less Catalog Number ECSR (.1 - 600A) 600 Volts AC or Less 0.1 0.12 0.15 0.2 0.25 0.3 0.4 0.5 0.6 0.8 1 1.12 1.25 1.4 1.5 1.6 1.8 2 2.25 2.5 2.8 3 0.1 0.15 0.2 0.25 0.3 0.4 0.5 0.6 0.8 1 1.12 1.25 1.4 1.5 1.6 1.8 2 2.25 2.5 2.8 3 3.2 AMPERE RATINGS ECNR 250V 3.2 10 3.5 12 4 15 4.5 17.5 5 20 5.6 25 6 30 6.25 35 7 40 8 45 9 50 ECSR 600V 3.5 12 4 15 4.5 17.5 5 20 5.6 25 6 30 6.25 35 7 40 8 45 9 50 10 60 ECNR/ECSR SPECIFICATIONS Dual-Element Time-Delay 60 70 75 80 90 100 110 125 150 175 200 225 250 300 350 400 450 500 600 — — — 70 75 80 90 100 110 125 150 175 200 225 250 300 350 400 450 500 600 — — — — BENEFITS: • True dual - element construction allows sizing of 125% FLA for motor backup protection. • Superior overload and cycling capabilities. • Current limiting; provides component short-circuit protection. APPLICATIONS: • Recommended for AC power distribution system mains, feeders, and branch circuits. • Protection of motors and motor branch circuits. • Protection of transformers and other inductive loads. • All general - purpose applications including lighting, heating and other non-inductive loads. Voltage Rating: ECNR - 250VAC, ECSR - 600VAC Ampere Rating: .1 - 600 Amps Interrupting Rating: 200,000 RMS Symmetrical Amps Current Limiting: RK5 Fuse Agency Approvals: UL Listed, Class RK5, Guide JDDZ, File E162363 CSA Certified HRCI-R per C22.2, No. 248.12 Self-Certified DC Ratings: Voltage Rating: ECNR (.1-600) 125VDC ECSR (.1-600) 300VDC Interrupting Rating: ECNR/ECSR 20,000 Amperes DC RECOMMENDED FUSEBLOCKS: Refer to page 136 in this catalog. RECOMMENDED UPGRADE: Class RK1 (LENRK/LESRK) for greater degree of short circuit protection. VOLTS 250 600 EDISON ECNR ECSR CROSS REFERENCE BUSSMANN GOULD FRN-R TR FRS-R TRS LITTELFUSE FLNR FLSR 1 BULLET™ CLASS RK5 DUAL ELEMENT TIME-DELAY FUSES ECNR/ECSR dual element FUSES These fuses are recommended for AC power distribution system mains, feeders and branch circuits having inductive loads (motors, transformers) or non-inductive loads (lighting, heating) where the available short-circuit current does not exceed 200,000 RMS symmetrical amperes. These “dual element, time-delay” fuses have minimum industry standard time-delay of 10 seconds at 5 times the fuse rating (8 sec. minimum for 250V, 30A and less). The time-delay characteristics of these fuses typically allows them to be sized closer to the running ampacity of inductive loads to reduce cost and provide improved overcurrent protection. These fuses will override normal equipment current surges to reduce unnecessary fuse openings. They are the most popular fuses used in the industry and the most economical for most applications, especially motors and transformers. They have moderate current limitation. CLASS R FUSES WILL FIT CLASS H, K AND R FUSE CLIPS. CLASS R FUSE CLIPS WILL ONLY ACCEPT CLASS R FUSES. FUSES RATED 600 VOLTS AC OR LESS MAY BE APPLIED AT ANY LOWER VOLTAGE. CONTACT EDISON FUSEGEAR FOR SPECIAL PRODUCTS OR APPLICATIONS. DIMENSIONS(1) Ferrule Design–0 through 60 Amperes Catalog Number ECNR 250V ECSR 600V (1) 2 Knife Blade–70 through 600 Amperes Amps 0-30 35-60 70-100 110-200 225-400 450-600 0-30 35-60 65-100 110-200 225-400 450-600 Dimensions in inches. Overall Length A 2 3 5.88" 7.13" 8.63" 10.38" 5 5.5 7.88 9.63 11.63 13.38 Max Diameter B .56" .81" 1.06" 1.56" 2.06" 2.59" .81 1.06 1.11 1.61 2.34 2.88 BULLET™ CLASS RK5 DUAL ELEMENT TIME-DELAY FUSES 600A 400A 200A 100A 60A 30A 10A AMPERE RATING 100 15A .2A .3A .4A .5A .6A .8A 1A 1.125A 1.6A 2A 2.5A 3.2A 4A 5A 6.125A .1A AVERAGE TIME/CURRENT CURVES Cat No. ECNR (AMP) 250 VAC AMPERE RATING 100 10 TIME IN SECONDS TIME IN SECONDS 10 1 1 .1 20,000 10,000 1,000 100 .01 10 RMS SYMMETRICAL CURRENTS IN AMPERES 600 100 10 1 .01 .1 .1 RMS SYMMETRICAL CURRENTS IN AMPERES 3 BULLET™ CLASS RK5 DUAL ELEMENT TIME-DELAY FUSES 600A 400A 200A 100A 60A 10A 15A .1A .2A AMPERE RATING 100 30A .3A .4A .5A .6A .8A 1A 1.125A 1.6A 2A 2.5A 3.2A 4A 5A 6.125A 8A AVERAGE TIME/CURRENT CURVES Cat No. ECSR (AMP) 600 VAC AMPERE RATING 100 10 TIME IN SECONDS TIME IN SECONDS 10 1 1 .1 700 100 10 1 .01 .1 .1 RMS SYMMETRICAL CURRENTS IN AMPERES 4 20,000 10,000 1,000 100 .01 10 RMS SYMMETRICAL CURRENTS IN AMPERES BULLET™ CLASS RK5 DUAL ELEMENT TIME-DELAY FUSES PEAK LET-THROUGH CURRENT CURVES* ECNR (250V) ECSR (600V) CURRENT LIMITATION TABLES ECNR (250V)* ECSR (600V)* Available Fault Apparent Effective Let-Thru Amperes Current Fuse Ampere Ratings RMS Amps 30A 60A 100A 200A 400A 5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 50,000 60,000 80,000 100,000 150,000 200,000 5,000 8,700 9,900 10,700 11,400 12,100 12,600 13,100 14,000 14,900 16,000 17,100 19,200 20,800 1,050 1,310 1,490 1,630 1,720 1,840 1,920 2,000 2,140 2,260 2,450 2,620 2,920 3,140 2,070 2,570 2,920 3,200 3,420 3,630 3,810 3,980 4,200 4,500 4,900 5,200 5,800 6,200 2,820 3,630 4,140 4,500 4,800 5,100 5,400 5,600 6,000 6,400 7,000 7,500 8,300 8,900 4,300 5,400 6,200 6,800 7,200 7,700 8,100 8,500 9,100 9,600 10,600 11,400 13,000 14,300 600A Available Fault Apparent Effective Let-Thru Amperes Current Fuse Fuse Ampere Ratings RMS Amps 30A 60A 100A 200A 400A 600A 5,000 10,000 15,000 16,100 17,200 18,300 19,200 19,900 21,400 22,600 24,600 26,200 29,200 31,700 5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 50,000 60,000 80,000 100,000 150,000 200,000 5,000 8,800 10,200 11,400 12,400 13,200 14,100 14,700 16,000 17,200 19,100 20,700 23,900 26,700 5,000 10,000 15,000 18,200 19,600 21,100 22,400 23,400 25,300 27,000 29,500 31,700 36,300 39,500 1,290 1,640 1,890 2,110 2,260 2,420 2,570 2,670 2,890 3,060 3,360 3,630 4,100 4,400 2,070 2,590 2,940 3,250 3,470 3,660 3,850 4,030 4,300 4,500 4,900 5,200 5,800 6,100 2,980 3,810 4,400 4,800 5,200 5,500 5,800 6,000 6,500 6,900 7,600 8,200 9,300 10,400 5,000 6,500 7,500 8,300 8,900 9,600 10,100 10,500 11,400 12,100 13,400 14,400 16,500 18,300 *"Apparent Let-Thru Amperes" values are read from "Peak Let-Through Current Curves" and the peak current value divided by 2.3 Asymmetry Factor. 5