KLDR.300T

Class CC Fuses 600 VAC ■ 1/10 – 60 Amperes SPECIFICATIONS Voltage Ratings: AC: 600 Volts DC: 250 – 500 Volts (CCMR)† 300 Volts (KLDR) 300 Volts (KLKR) Interrupting Ratings: AC: 200,000 amperes rms symmetrical DC: 20,000 amperes Ampere Range: CCMR: 2/10 – 60 amperes KLDR: 1/10 – 30 amperes KLKR: 1/10 – 30 amperes Approvals: AC: Standard 248-4, Class CC UL Listed 1/10-30 Amps (File No: E81895) Standard 248, Class CD UL Listed 35-60 Amps (File No: E71611) CSA Certified 1/10-60 Amps (File No: LR29862) DC: Littelfuse Self-certified RECOMMENDED FUSE BLOCKS Compared to other UL Listed fuses, Class CC fuses are the most current limiting, rating for rating. Because they are physically compact, 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, panel mounting space is reduced approximately 70%. This is especially important when a panel contains many fuses to protect multiple circuit components. L60030C series L60060C series (for CCMR 35–60A) Refer to Fuse Block section of this catalog for additional information. †Refer to the POWR-PRO® section for additional information. .25" (6.4 mm) 1.50" (38.1 mm) APPLICATIONS Three Types of Class CC Fuses, Specifically Designed to Protect Different Types of Components 1) Motor protection — CCMR series; dual-element, timedelay fuses specifically designed to protect motor circuits up to 40 HP**. 2) Small transformer protection (control power transformers) — KLDR series, time-delay fuses designed to withstand the high magnetizing inrush of transformers. 3) General purpose protection of equipment requiring fast overload protection — KLKR series, fast-acting fuses used for protection of equipment containing solidstate devices or other electronic components requiring fast response on overloads. .41" 0-30A (10.3 mm) .125" .50" (12.7 mm) 35-60A SAFETY ■ ■ 200,000 A.I.R. — Reliable interruption of all overcurrents up to 200,000 amperes. 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. SPACE SAVING ■ Class CC fuses are the smallest 600V, 200,000 A.I.R. fuses approved for branch circuit protection. ECONOMICAL ■ Current limiting design often permits use of readily available, less costly equipment. **Consult the Motor Protection Tables in the Fuseology section for specific motor sizing information 44 (3.2 mm) 1.880 REF. + .850 -.020 Class CC Fuses 600 VAC ■ 1/10 – 60 Amperes CCMR Series For space-saving protection of motor circuits up to 40 HP**, we recommend Littelfuse POWR-PRO® CCMR series fuses. These fuses are the only true dual-element time-delay CC fuses specifically engineered for motor branch circuit protection. They provide Type II protection (no damage) to both NEMArated and the more sensitive IEC (International Electromechanical Commission) type motor circuit components. CCMR series fuses are now available in larger sizes — from 35 to 60 amperes! No other 600V fuse is available with this current carrying capacity in a package this small. For more information on CCMR series Class CC fuses, see the CCMR series pages in the POWR-PRO® section of this catalog. 1/10 – 30A: UL Listed Time-Delay Class CC 35 – 60A: UL Listed Class CD **Consult the Motor Protection Tables in the Fuseology section for specific motor sizing information Example part number (series & amperage): CCMR 30 KLDR fuses are time-delay fuses specifically designed for the protection of control transformers, solenoids and similar inductive components with high magnetizing currents during the first half-cycle. They closely match most control power transformer characteristics, which permits the fuses to be sized in accordance with the latest revisions of UL 508 (Industrial Control) and UL 845 (Motor Control Centers). When the time delay of KLDR fuses is adequate to carry motor starting current, they provide excellent protection of motor branch circuits containing IEC or NEMA rated motor controllers or contactors. AMPERE RATINGS AMPERE RATINGS ⁄10 ⁄4 3 ⁄10 1 ⁄2 6 ⁄10 8 ⁄10 1 2 1 11⁄4 14⁄10 11⁄2 16⁄10 18⁄10 2 21⁄4 21⁄2 28⁄10 3 32⁄10 31⁄2 4 41⁄2 5 56⁄10 6 61⁄4 7 71⁄2 8 9 10 12 15 171⁄2 20 25 30 35 40 45 50 60 KLDR Series ⁄10 ⁄8 15 ⁄100 3 ⁄16 2 ⁄10 1 ⁄4 3 ⁄10 4 ⁄10 ⁄2 ⁄10 3 ⁄4 8 ⁄10 1 11⁄8 11⁄4 1 1 1 6 14⁄10 11⁄2 16⁄10 18⁄10 2 21⁄4 21⁄2 28⁄10 3 32⁄10 31⁄2 4 41⁄2 5 56⁄10 6 61⁄4 7 71⁄2 8 9 10 12 15 171⁄2 20 25 30 Example part number (series & amperage): KLDR 5 6⁄10 KLKR Series KLKR series Class CC fuses are fastacting fuses intended for general purpose branch circuit protection. Their compact size, fast-acting overload response, and their highly current limiting design make them ideal for use in OEM equipment and control panels. Solid-state devices such as SCRs and other electronic equipment generally require fast-acting protection. AMPERE RATINGS ⁄10 ⁄8 2 ⁄10 1 ⁄4 3 ⁄10 ⁄2 ⁄4 1 11⁄2 1 1 1 3 2 21⁄2 3 31⁄2 4 5 6 7 8 9 10 12 15 20 25 30 Example part number (series & amperage): KLKR 25 45 Class CC Fuses 600 VAC 1/10 – 60 Amperes ■ For performance data on Littelfuse CCMR series Class CC fuses, see the CCMR pages in the POWR-PRO® section of this catalog. 1000 800 600 400 300 400 300 200 200 100 80 60 100 80 60 40 30 40 30 20 20 2A 3A 4A 5A 6A 8A 9A 10A 12A 15A 20A 25A 30A 1 1/2A 600 800 1000 CURRENT IN AMPERES KLKR 1000000 800000 600000 400000 300000 400000 300000 200000 200000 100000 80000 60000 100000 80000 60000 AVAILABLE FAULT CURRENT SYMMETRICAL R. M. S. AMPERES AVAILABLE FAULT CURRENT SYMMETRICAL R. M. S. AMPERES 200000 200000 60000 80000 100000 30000 40000 20000 6000 8000 10000 3000 4000 100 2000 100 600 800 1000 200 300 400 200 200 400 300 100 400 300 60000 80000 100000 1000 800 600 30000 40000 1000 800 600 2000 20000 8A 6A 4A 30A 25A 20A 15A 12A 6000 8000 10000 2000 4000 3000 3000 4000 10A 2000 4000 3000 10000 8000 6000 600 800 1000 10000 8000 6000 20000 300 400 20000 40000 30000 200 40000 30000 PEAK LET-THRU IN AMPERES 1000000 800000 600000 100 KLDR PEAK LET-THRU IN AMPERES 300 400 .1 600 800 1000 300 400 200 60 80 100 30 40 20 2 6 8 10 .01 3 4 .01 .6 .8 1 .02 .3 .4 .04 .03 .02 .2 .04 .03 200 .1 .08 .06 60 80 100 .1 .08 .06 30 40 .2 20 .2 6 8 10 .4 .3 CURRENT IN AMPERES 46 3/4A 1A 1 .8 .6 .4 .3 .1 1/2A 2 2 1 .8 .6 3 4 2 4 3 .6 .8 1 4 3 10 8 6 .3 .4 TIME IN SECONDS 10 8 6 .2 TIME IN SECONDS 1000 800 600 2/10A 1/4A 3/10A 1/10A 1/8A 10A 2A 2 1/2A 3A 4A 6 1/4A 8A 1.8A 3/10A 1/2A 6/10A 3/4A 1A KLKR 1/8A 2/10A KLDR