Bussmann Cable Limiters K Series 600 Volt Copper Limiters General Information: Selection: unlike fuses, the current-carrying capacity of cable limiters is denoted by cable size rather than amperage. For example, a 4/0 limiter will carry the current of a 4/0 cable. Buss Cable Limiters help protect cables against short- circuit currents. Increase system reliability. Under high short-circuit conditions, they can cut off fault currents within one-half cycle (0.008 seconds). This fast action reduces insulation damage from the immense heat that is developed by sustained fault current flow (often 30,000, 50,000, 70,000, 150,000 amps magnitude). Reduces the high build-up of mechanical forces due to intense magnetic fields. Cable limiters help confine damage to the point of the short-circuit. Help stop long-length cable burn-back and striking of multiple arcs. Apart from the loss of power and operational shutdown, short-circuits can do devastating damage to conductors. The cost of total replacement of cables, particularly when they are buried underground, outweighs the nominal cost of cable limiter protection. Without the protection of limiters, under short-circuit condi- tions, a cable may continue to arc at several points and cause severe damage to components of the systemit does not necessarily burn clear. Buss Cable Limiters are short-circuit devices (unresponsive to light cable overloads) with several types of terminal con- nections to permit easy mechanical connection to a broad range of cable sizes. Catalog Symbol: K Series Totally self-contained, static device. Cable Limiters Unlike the open link-type limiters, there is no venting of Interrupting Rating: 200,000 Amperes, RMS Sym. ionized gases or explosive action. Voltage Rating: 600 Volts Has stable, unchanging characteristics. High interrupting rating. Buss Cable Limiters withstand high short-circuit currents. Help provide compliance with NEC 110-9 and NEC 230-65. KDM, KDR, KDP and KFM copper cable limiters are UL list- ed under File E990818. For use at 600 V, ac on faults up to 200,000 Amps. Form No. Cable Limiters Page 1 of 3 11-27-00 A00160 BIF Doc 1042 Bussmann Cable Limiters K Series 600 Volt Copper Limiters Dimensional Data Figure 1. Figure 2. Figure 3. A A C A F C B B Tube-to-Tube Tube-to-Off- G Compression J A B C D Terminals set Bolt Rod-to-Tube Terminals Terminals E E H F D D E G 0.125 (3.18mm) 1.63 0.56 Figure 4. Common (41.3mm) (14.3mm) C A A F B Center Detail for D Bolt-to-Offset Bolt Bolt Terminals Terminals 0.5 0.5 0.56 (6.4mm) (6.4mm) (14.3mm) Copper Cable Limiter 600 Volts Catalog Cable Dimensions in Inches Dimensions in Millimeters Symbol Size A B C D E F G H J A B C D E F G H J Tubular Terminals (Figure 1) KCY 4 1.25 2.88 1.06 0.31 0.25 31.8 73.0 27.0 7.9 6.4 KCZ 3 1.25 2.88 1.06 0.34 0.28 31.8 73.0 27.0 8.7 7.1 KCA 2 1.25 2.88 1.06 0.44 0.31 31.8 73.0 27.0 11.1 7.9 KCB 1 1.25 2.88 1.06 0.34 0.34 31.8 73.0 27.0 11.9 8.7 KCC 1/0 1.5 2.625 1.25 0.52 0.39 38.1 73.0 31.8 13.1 9.9 KCD 2/0 1.63 2.625 1.25 0.44 0.70 41.3 73.0 31.8 14.3 11.1 KCE 3/0 1.63 3.63 1.44 0.61 0.48 41.3 92.1 36.5 15.5 12.3 KCF 4/0 1.75 3.63 1.44 0.34 0.55 44.5 92.1 36.5 17.5 14.0 KCH 250 MCM 1.88 3.63 1.44 0.75 0.28 47.6 92.1 36.5 19.0 15.1 KCJ 350 MCM 2.0 3.63 1.63 0.88 0.70 50.8 92.1 41.3 22.2 17.9 KCM 500 MCM 2.88 3.078 1.88 1.06 0.83 73.0 92.1 47.6 27.0 21.0 KCR 750 MCM 3.5 3.75 2.5 1.31 1.06 88.9 73.0 63.5 33.3 27.0 KCS 1000 MCM 5.0 3.75 2.5 1.56 1.22 127.0 95.2 63.5 39.7 31.0 Tubular Terminal and Offset Bolt-Type Terminal (Figure 2) KQV 12 1.25 2.88 1.06 0.19 0.125 3.31 0.72 0.19 1.125 31.8 73.0 27.0 4.8 3.2 84.1 18.3 4.8 28.6 KQT 10 1.25 2.88 1.06 0.23 0.14 3.31 0.72 0.19 1.125 31.8 73.0 27.0 6.0 3.6 84.1 18.3 4.8 28.6 KFZ 8 1.25 2.88 1.06 0.23 0.16 3.31 0.72 0.19 1.125 31.8 73.0 27.0 6.0 4.0 84.1 18.3 4.8 28.6 KIG 6 1.25 2.88 1.06 0.31 0.16 3.31 0.72 0.19 1.125 31.8 73.0 27.0 7.9 4.0 84.1 18.3 4.8 28.6 KDY 4 1.25 2.88 1.06 0.31 0.25 3.31 0.72 0.19 1.125 31.8 73.0 27.0 7.9 6.4 84.1 18.3 4.8 28.6 KDA 2 1.25 2.88 1.06 0.44 0.31 3.31 0.72 0.19 1.125 31.8 73.0 27.0 11.1 7.9 84.1 18.3 4.8 28.6 KDB 1 1.25 2.88 1.06 0.47 0.34 3.31 0.72 0.19 1.125 31.8 73.0 27.0 11.9 8.7 84.1 18.3 4.8 28.6 KDC 1/0 1.5 2.625 1.25 0.52 0.39 3.38 0.88 0.25 1.125 38.1 92.1 31.8 13.1 9.9 85.7 22.2 6.4 28.6 KDD 2/0 1.63 2.625 1.25 0.56 0.44 3.38 0.88 0.25 1.125 41.3 92.1 31.8 14.3 11.1 85.7 22.2 6.4 28.6 KDE 3/0 1.63 3.63 1.44 0.61 0.48 3.38 0.97 0.25 1.125 41.3 92.1 36.5 15.5 12.3 85.7 22.2 6.4 28.6 KDF 4/0 1.75 3.63 1.44 0.69 0.55 3.38 0.97 0.25 1.125 44.5 92.1 36.5 17.5 13.9 85.7 22.2 6.4 28.6 KDH 250 MCM 1.88 3.63 1.44 0.75 0.28 3.38 0.97 0.25 1.125 47.6 92.1 36.5 19.0 15.1 85.7 24.6 6.4 28.6 KDJ 350 MCM 2.0 3.63 1.63 0.88 0.70 3.38 1.06 0.25 1.125 50.8 92.1 41.3 22.2 17.8 85.7 27.0 6.4 28.6 KDM** 500 MCM 2.88 3.078 1.88 1.06 0.83 3.38 1.19 0.25 1.63 73.0 92.1 47.6 27.0 21.0 85.7 30.2 6.4 41.3 KDR** 750 MCM 3.5 3.75 2.5 1.31 1.06 3.5 1.5 0.25 2.0 88.9 95.2 63.5 33.3 27.0 88.9 38.1 6.4 50.8 Compression Connector Rod Terminal and Tubular Terminal (Figure 3) KEX 4/0 2.5 3.63 1.75 1.44 0.69 0.55 0.5 63.5 92.1 44.5 36.5 17.5 13.9 12.7 KFH-A 250 MCM 2.5 3.63 1.88 1.44 0.75 0.28 0.56 63.5 92.1 47.6 36.5 19.0 15.1 14.3 KQO 350 MCM 2.5 3.63 2.0 1.63 0.88 0.70 0.81 63.5 92.1 50.8 41.3 22.2 17.8 20.6 KDT 500 MCM 2.5 3.078 2.88 1.88 1.06 0.83 0.81 63.5 92.1 73.0 47.6 27.0 21.0 20.6 *Center Bolt-Type Terminal and Offset Bolt-Type Terminal (Figure 4) KPF 4/0 3.38 3.63 1.44 1.125 1.125 0.97 85.7 92.1 36.5 28.6 28.6 24.6 KFT 250 MCM 3.38 3.63 1.44 1.125 1.125 0.97 85.7 92.1 36.5 28.6 28.6 24.6 KEW 350 MCM 3.38 3.63 1.63 1.125 0.97 1.06 85.7 92.1 41.3 28.6 28.6 27.0 KDP** 500 MCM 3.38 3.078 1.88 1.5 1.63 1.19 85.7 92.1 47.6 38.1 41.3 30.2 KFM** 750 MCM 3.5 3.75 2.5 2.0 2.0 1.5 88.9 95.3 63.5 50.8 50.8 38.1 *Copper or aluminum cable sizes of all other limiters pertain to copper only. Available with molded rubber boot B. V suffix - Heat shrink tube available on several Part Nos. ** UL Listed File E90818, 600V, ac 200,000 AIC Form No. Cable Limiters Page 2 of 3 11-27-00 A00160 BIF Doc 1042