Cable Limiters
Cable limiters are distinguished from fuses by their intended purpose of
providing only short circuit response: they are not designed to provide over
load protection. Typically, cable limiters are selected based on conductor size.
They are available in a wide range of types to accommodate the many
conductor sizes, copper or aluminum conductors, and a variety of termination
methods. There are two broad categories of cable limiters:
1. 600V or less rated-for large commercial, institutional and industrial applications.
2. 250V or less rated-for residential and light commercial applications .
In institutional, commercial, and industrial systems, cable limiters are used at
both ends of each cable on three or more cables per phase applications
between the transformer and switchboard, as illustrated in the diagram andphotographs.
Copper Cable Limiter — 600V |
Catalog Symbol | Cable Size | Catalog Symbol | Cable Size |
| KCY | 4 AWG | KCF | 4/0 AWG |
KCZ | 3 AWG | KCH | 250 kcmil |
KCA | 2 AWG | KCJ | 350 kcmil |
KCB | 1 AWG | KCM | 500 kcmil |
KCC | 1/0 AWG | KCV | 600 kcmil |
KCD | 2/0 AWG | KCR | 750 kcmil |
KCE | 3/0 AWG | KCS | 1000 kcmil |
Tubular Terminal and Offset Bolt-Type Terminal |
KQV | 12 AWG | KDD | 2/0 AWG |
KQT | | KDE | 3/0 AWG |
KIZ | 8 AWG | KDF | 4/0 AWG |
KDG | 6 AWG | KDH | 250 kcmil |
KDY | 4 AWG | KDJ | 350 kcmil |
KDA | 2 AWG | KDM | 500 kcmil |
KDB | 1 AWG | KDU | 600 kcmil |
KDC | 1/0 AWG | KDR | 750 kcmil |
Compression Connector Rod Terminal and Tubular Terminal |
KEX | 4/0 AWG | KQO | 350 kcmil |
KFH-A | 250 kcmil | KDT | 500 kcmil |
*Center Bolt-Type Terminal and Off-Set Bolt-Type Terminal |
| KPF | 4/0 AWG | KDP | 500 kcmil |
| KFT | 250 kcmil | KFM | 750 kcmil |
KEW
| 350 kcmil |
|
|
*Copper or aluminum cable; sizes of all other limiters pertain to copper only.
Cable Limiter Specifications
Dimensional Data
| Copper Cable Limiter — 600 Volts |
| Catalog Symbol | Cable Size | Dimensions in Inches A B C | D | E | F | G | H | J | Dimensions in Millimeters 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 | 3.08 | 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
Bussmann fuse holder: CHCC1DU, CHM1DU, etc;
Bussmann microswitch: 170H0069 etc;
Bussmann fuse block: 1BS101 etc;
More Bussmann fuse accessories.
