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| CCMR Series POWR-PRO(R) CC Fuses 600 VAC s Dual-Element, Time-Delay s 2/10 - 60 Amperes SPECIFICATIONS Voltage Ratings: AC: 600 Volts DC: 250 Volts (CCMR 2/10 -- 2A) (CCMR 4 1/2 -- 10A) (CCMR 35 -- 60A) 300 Volts (CCMR 2 1/4 -- 4A) 500 Volts (CCMR 12 -- 30A) Interrupting Ratings:AC: 200,000 amperes rms symmetrical 300,000 amperes rms symmetrical (Littelfuse self-certified) DC: 20,000 amperes Ampere Range: 2/10 -- 60 amperes Approvals: AC: Standard 248-4, Class CC UL Listed 2/10 - 30 amps (File No: E81895) Standard 248, Class CD UL Listed 35 - 60 amps (File No: E71611) CSA Certified 2/10 - 60 amps (File No: LR29862) DC: Littelfuse self-certified AMPERE RATINGS 10 4 3 10 1 2 6 10 8 10 2 1 1 114 1410 112 1610 1810 2 214 212 2810 3 3210 312 4 412 5 5610 6 614 7 712 8 9 10 12 15 1712 20 25 30 35 40 45 50 60 Example part number (series & amperage): CCMR 40 RECOMMENDED FUSE BLOCKS L60030C series (CCMR 2/10 -- 30A) L60060C series (CCMR 35 -- 60A) Refer to Fuse Block section of this catalog for additional information. For space-saving protection of motor circuits up to 40 HP*, we recommend Littelfuse POWR-PRO(R) CCMR series fuses. These fuses are the only true dual-element, time-delay fuses in a package this small that are specifically engineered for motor branch circuit protection. They provide Type 2 protection (no damage) to both NEMA-rated and the more sensitive IEC (International Electrotechnical Commission) type motor circuit components. Because CCMR fuses are the most current limiting rating for rating, and because their time-delay characteristics permit the use of smaller fuse ratings in motor circuits than would be possible with fast-acting fuses, CCMR fuses provide superior short-circuit protection. Furthermore, they provide this superior protection in a fraction of the space required by other fuse classes. For example, when 600V three-pole, 30 ampere Class R fuse blocks are replaced by Littelfuse Class CC fuse blocks, mounting space requirements may be reduced 70% or more. This is especially important when a panel contains control devices for many motors. In addition to the UL Listed smaller sizes, Littelfuse CCMR series fuses are now available in larger sizes -- from 35 to 60 amperes! No other fuse is available with this current carrying capacity in a package this small. As a matter of fact, the 60 ampere CCMR fuse is the smallest 60A fuse available which is rated at 600 volts. *Consult the Motor Protection Tables in the Fuseology section for specific motor sizing information APPLICATIONS CCMR series fuses are specifically designed to withstand sustained starting currents of small motors Provide short-circuit protection for motor branch circuits Use with IEC- and NEMA-rated motor controllers and contactors General purpose circuits up to 60 amps FEATURES/BENEFITS s Space savings -- No other fuse class approved for branch-circuit protection has a 600 volt rating and 300,000 A.I.R. in a package this small. Extremely current-limiting -- Reduces damage caused by heating and magnetic effects of short-circuit currents -- stops damaging short-circuit currents faster than any mechanical protective device. Excellent time delay -- Eliminates needless downtime caused by power surges or equipment demands . . . permits selection of fuse sizes closer to actual load conditions -- provides better protection. 300kA Interrupting Rating -- Littelfuse self-certified to 300,000 amperes as standard. Meets future trend towards higher available short circuit currents. s s s 18 CCMR Series POWR-PRO(R) CC Fuses 600 VAC s Dual-Element, Time-Delay s 2/10 - 60 Amperes .25" 1.50" (38.1 mm) (6.4 mm) .850 -.020 + 0-30A .50" (12.7 mm) .41" (10.3 mm) 35-60A .125" (3.2 mm) 1.880 REF. Current-Limiting Effects of CCMR (600V) fuses Short Circuit Current* 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 Let-Thru Current** For Various Fuse Ratings 2A 160 180 200 220 230 240 245 255 260 280 300 310 340 350 4A 190 220 250 260 280 290 300 310 330 340 360 380 420 440 614 A 330 400 430 460 480 500 520 550 570 600 625 650 700 750 10A 370 440 480 520 550 570 590 600 640 670 700 750 800 850 12A 525 600 675 720 750 800 825 850 875 900 1,000 1,050 1,150 1,200 15A 600 700 775 825 850 900 925 975 1,000 1,050 1,125 1,200 1,300 1,400 20A 625 725 800 850 900 950 975 1,000 1,100 1,125 1,200 1,250 1,400 1,450 30A 750 875 950 1,000 1,050 1,125 1,175 1,200 1,300 1,350 1,400 1,500 1,600 1,750 * Prospective RMS Symmetrical Amperes Short-Circuit Current **Apparent RMS Symmetrical Note: Data derived from Peak Let-Thru Curves 8/10A 1A 1 1/4A 1 1/2A 1 8/10A 2A 2 1/2A 3A 3 1/2A 4A 6A 8A 10A 12A 15A 20A 25A 30A 35A 1/4A 1/2A 1000 800 600 400 300 200 100 80 60 60A 1000000 800000 600000 400000 300000 200000 100000 80000 60000 PEAK LET-THRU IN AMPERES 40 30 20 40000 30000 20000 10000 8000 6000 4000 3000 2000 1000 800 600 400 300 200 100 100 200 300 400 600 800 1000 2000 3000 4000 6000 8000 10000 20000 30000 40000 60000 80000 100000 200000 60A TIME IN SECONDS 10 8 6 4 3 2 1 .8 .6 .4 .3 .2 .1 .08 .06 .04 .03 .02 .01 30A 20A 15A 12A 10A 6 1/4A 4A 2A .05 .08 .1 .2 .3 .4 .6 .8 1 2 3 4 6 8 10 20 30 40 60 80 100 200 300 400 600 800 1000 CURRENT IN AMPERES AVAILABLE FAULT CURRENT SYMMETRICAL R. M. S. AMPERES 19 |
Price & Availability of CCMR
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