E Rated Medium Voltage Fuses Current Limiting “E” Rated fuses have time current characteristics designed to provide current limiting protection for power transformers, potential transformers, power centers, feeder centers, and unit sub stations. When properly applied, they can protect against high and low value fault currents. NEMA Standards for “E” rated medium voltage fuses require that fuses rated 100E or less open within 300 seconds (5 minutes) when subjected to an RMS value of 200-240% of the fuse’s continuous current rating; and fuses with an “E” rating larger than 100E must open within 600 seconds (10 minutes) when subjected to an rms current of 220-240% of the fuse’s continuous current rating. These values establish one point on the time-current curve. CHARACTERISTICS Voltage Rating: 2,400 volts – 38,000 volts Current Range: 10E – 600E OPTIONS ■ ■ Hermetically Sealed for use in hazardous locations (add “S” suffix to part number) Clip-lock (CL) and bolt-in styles available. Application Note: Since these fuses are used for the protection of general purpose circuits which may contain transformers, motors, and other equipment producing inrush and/or overload currents, fuses should generally be rated at 140% of the normal full load current, and circuits should be analyzed to ensure that system load currents will not exceed the current rating of the fuse. 6.38" 3"DIA Dim.A (Clip Center) Dim.B FIGURE 14 E 2.75 Max. KV RATED Catalog Number 10E-1C-2.75 15E-1C-2.75 20E-1C-2.75 25E-1C-2.75 30E-1C-2.75 40E-1C-2.75 50E-1C-2.75 65E-1C-2.75 80E-1C-2.75 100E-1C-2.75 125E-1C-2.75 150E-1C-2.75 200E-1C-2.75 125E-2C-2.75 150E-2C-2.75 175E-2C-2.75 200E-2C-2.75 225E-2C-2.75 250E-2C-2.75 300E-2C-2.75 350E-2C-2.75 400E-2C-2.75 450E-2C-2.75 9.75" Old Catalog Number LCX 10E — — — LCX 30E LCX 40E LCX 50E LCX 65E LCX 80E LCX 100E — — — LCX 125E LCX 150E LCX 175E LCX 200E LCX 250E LCX 300E LCX 400E — FIGURE 15 Size 10E 15E 20E 25E 30E 40E 50E 65E 80E 100E 125E 150E 200E 125E 150E 175E 200E 225E 250E 300E 350E 400E 450E FIGURE 16 Dim. A (inches) Dim. B (inches) Max Interrupting Rating RMS (Asym) 7" 10.875" 80,000 7" 10.875" 80,000 Figure Number 14 14 14 14 14 14 14 14 14 14 14 14 14 15 15 15 15 15 15 15 15 15 15 67 E Rated Medium Voltage Fuses Current Limiting E 5.5 Max. KV 5.5 Max. KV RATED 68 Catalog Number 10E-1C-5.5 15E-1C-5.5 20E-1C-5.5 25E-1C-5.5 30E-1C-5.5 40E-1C-5.5 50E-1C-5.5 65E-1C-5.5 80E-1C-5.5 100E-1C-5.5 125E-1C-5.5 150E-1C-5.5 175E-1C-5.5 200E-1C-5.5 125E-2C-5.5 150E-2C-5.5 175E-2C-5.5 200E-2C-5.5 250E-2C-5.5 300E-2C-5.5 350E-2C-5.5 400E-2C-5.5 450E-2C-5.5 500E-3C-5.5 550E-3C-5.5 600E-3C-5.5 5NLE-10E 5NLE-15E 5NLE-20E 5NLE-25E 5NLE-30E 5NLE-40E 5NLE-50E 5NLE-65E 5NLE-80E 5NLE-100E 5NLE-125E 5NLE-150E 5NLE-175E 5NLE-200E 5NLE2-225E 5NLE2-250E 5NLE2-300E 5NLE2-350E 5NLE2-400E 5NLE2-450E Old Catalog Number — — — — LCY 30E LCY 40E LCY 50E LCY 60E LCY 80E LCY 100E LCY 125E LCY 150E LCY 175E LCY 200E — — — — LCY 250E LCY 300E LCY 350E LCY 400E LCY 450E — — — LCU 30E LCU 40E LCU 50E LCU 65E LCU 80E LCU 100E LCU 125E LCU 150E LCU 175E LCU 200E LCU 250E LCU 300E LCU 350E LCU 400E LCU 450E Size 10E 15E 20E 25E 30E 40E 50E 65E 80E 100E 125E 150E 175E 200E 125E 150E 175E 200E 250E 300E 350E 400E 450E 500E 550E 660E 10E 15E 20E 25E 30E 40E 50E 65E 80E 100E 125E 150E 175E 200E 225E 250E 300E 350E 400E 450E Dim. A (inches) Dim. B (inches) Max Interrupting Rating RMS (Asym) 12" 15.875" 80,000 12" 15.875" 80,000 12" 15.875" 80,000 14 17-7/8" 80,000 14" 17-7/8" 80,000 Diagram 14 14 14 14 14 14 14 14 14 14 14 14 14 14 15 15 15 15 15 15 15 15 15 16 16 16 14 14 14 14 14 14 14 14 14 14 14 14 14 14 15 15 15 15 15 15 E Rated Medium Voltage Fuses Current Limiting E 8.25 Max. KV 8.25 Max. KV RATED E 15.5 Max. KV RATED Catalog Number 10E-1C-8.25 15E-1C-8.25 20E-1C-8.25 25E-1C-8.25 30E-1C-8.25 40E-1C-8.25 50E-1C-8.25 65E-1C-8.25 80E-1C-8.25 100E-1C-8.25 125E-1C-8.25 150E-1C-8.25 125E-2C-8.25 150E-2C-8.25 200E-2C-8.25 250E-2C-8.25 300E-2C-8.25 350E-3C-8.25 400E-3C-8.25 8NLE-10E 8NLE-15E 8NLE-20E 8NLE-25E 8NLE-30E 8NLE-40E 8NLE-50E 8NLE-65E 8NLE-80E 8NLE-100E 8NLE2-100E 8NLE2-125E 8NLE2-150E 8NLE2-200E 8NLE2-250E Catalog Number 10E-1C-15.5 15E-1C-15.5 20E-1C-15.5 25E-1C-15.5 30E-1C-15.5 40E-1C-15.5 50E-1C-15.5 65E-1C-15.5 80E-1C-15.5 100E-1C-15.5 65E-2C-15.5 80E-2C-15.5 100E-2C-15.5 125E-2C-15.5 150E-2C-15.5 175E-2C-15.5 200E-2C-15.5 200E-3C-15.5 250E-3C-15.5 300E-3C-15.5 Old Catalog Number LDZ 30E LDZ 40E LDZ 50E LDZ 65E LDZ 80E LDZ 100E LDZ 125E LDZ 150E LDZ 125E LDZ 150E LDZ 200E LDZ 250E LDZ 300E LDZ 350Z LCZ 30E LCZ 40E LCZ 50E LCZ 65E LCZ 80E LCZ 100E LCZ 100E LCZ 125E LCZ 150E LCZ 200E Old Catalog Number LDN 10E LDN 15E LDN 20E LDN 25E LDN 30E LDN 40E LDN 50E LDN 65E LDN 80E LDN 100E LDN 150E LDN 175E Size 10E 15E 20E 25E 30E 40E 50E 65E 80E 100E 125E 150E 125E 150E 200E 250E 300E 350E 400E 10E 15E 20E 25E 30E 40E 50E 65E 80E 100E 100E 125E 150E 200E 250E Size 10E 15E 20E 25E 30E 40E 50E 65E 80E 100E 65E 80E 100E 125E 150E 175E 200E 200E 250E 300E Dim. A (inches) Dim. B (inches) Max Interrupting Rating RMS (Asym) 12" 15-7/8" 80,000 12" 15-7/8" 80,000 12" 15-7/8" 80,000 14" 17-7/8" 80,000 14" 17-7/8" 80,000 Dim. A (inches) Dim. B (inches) Max Interrupting Rating RMS (Asym) 15" 18.875" 60,000 15" 18.875" 60,000 15" 18.875" 60,000 Diagram 14 14 14 14 14 14 14 14 14 14 14 14 15 15 15 15 15 16 16 14 14 14 14 14 14 14 14 14 14 15 15 15 15 15 Figure Number 14 14 14 14 14 14 14 14 14 14 15 15 15 15 15 15 15 16 16 16 69 E Rated Medium Voltage Fuses Current Limiting E 15.5 Max. KV 15.5 Max. KV RATED E 25.8 Max. KV RATED E 38 Max. KV RATED 70 Catalog Number 15GSE-65E 15GSE-80E 15GSE-100E 15GSE2-125E 15GSE2-150E 15GSE2-175E 15GSE2-200E 15NLE-10E 15NLE-15E 15NLE-20E 15NLE-25E 15NLE-30E 15NLE-40E 15NLE-50E 15NLE-65E 15NLE-80E 15NLE-100E 15NLE2-80E 15NLE2-100E 15NLE2-125E 15NLE2-150E 15NLE2-175E 15NLE2-200E 15NLE3-150E 15NLE3-175E 15NLE3-250E 15NLE3-300E Catalog Number 15E-1C-25.8 20E-1C-25.8 25E-1C-25.8 30E-1C-25.8 40E-1C-25.8 50E-1C-25.8 65E-2C-25.8 80E-2C-25.8 100E-2C-25.8 Catalog Number 3E-1C-38.0 7E-1C-38.0 10E-1C-38.0 15E-1C-38.0 20E-1C-38.0 25E-1C-38.0 30E-1C-38.0 40E-1C-38.0 50E-2C-38.0 65E-2C-38.0 80E-2C-38.0 Old Catalog Number — — LCN 30E LCN 40E LCN 50E LCN 65E LCN 80ES LCN 100ES LCN 80E LCN 100E LCN 125X LCN 150E LCN 200ED — Old Catalog Number — — Old Catalog Number — — Size 65E 80E 100E 125E 150E 175E 200E 10E 15E 20E 25E 30E 40E 50E 65E 80E 100E 80E 100E 125E 150E 175E 200E 150E 175E 250E 300E Size 15E 20E 25E 30E 40E 50E 65E 80E 100E Size 3E 7E 10E 15E 20E 25E 30E 40E 50E 65E 80E Dim. A (inches) Dim. B (inches) Max Interrupting Rating RMS (Asym) 18" 21-7/8" 60,000 18" 21-7/8" 60,000 20" 23-7/8" 60,000 20" 23-7/8" 60,000 20" 23-7/8" 60,000 Dim. A (inches) Dim. B (inches) Max Interrupting Rating RMS (Asym) 21" 24-5/8" 40,000 21" 24-5/8" 40,000 Dim. A (inches) Dim. B (inches) Max Interrupting Rating RMS (Asym) 27" 30-5/8" 20,000 27" 30-5/8" 20,000 Figure Number 14 14 14 15 15 15 15 14 14 14 14 14 14 14 14 14 14 15 15 15 15 15 15 16 16 16 16 Figure Number 14 14 14 14 14 14 15 15 15 Figure Number 14 14 14 14 14 14 14 14 15 15 15 E Rated Medium Voltage Fuses Current Limiting 4.75 7.94 11.56 Clip Lock Design 1.25 The clip lock type designs ensures a positive contact between the fuse and the connection cam. The fuse’s clip lock tab slides in between the clip casting and the cam to prevent the fuse from slipping or blowing out of the holder. This positive contact improves heat dissipation and allows fuses to run cooler. E Clip Lock 5.5 Max. KV RATED E Clip Lock 8.25 Max. KV RATED E Clip Lock 15.5 Max. KV RATED Catalog Number 10E-1CL-5.5 15E-1CL-5.5 20E-1C-5.5 25E-1CL-5.5 30E-1CL-5.5 40E-1CL-5.5 50E-1CL-5.5 65E-1CL-5.5 80E-1CL-5.5 100E-1CL-5.5 125E-1CL-5.5 150E-1CL-5.5 225E-2CL-5.5 250E-2CL-5.5 300E-2CL-5.5 350E-2CL-5.5 400E-2CL-5.5 450E-2CL-5.5 500E-3CL-5.5 550E-3CL-5.5 600E-3CL-5.5 Catalog Number 10E-1CL-8.25 15E-1CL-8.25 20E-1C-8.25 25E-1CL-8.25 30E-1CL-8.25 40E-1CL-8.25 50E-1CL-8.25 65E-1CL-8.25 80E-1CL-8.25 100E-1CL-8.25 125E-2CL-8.25 150E-2CL-8.25 175E-2CL-8.25 200E-2CL-8.25 225E-2CL-8.25 250E-2CL-8.25 300E-2CL-8.25 350E-3CL-8.25 Catalog Number 10E-1CL-15.5 15E-1CL-15.5 20E-1CL-15.5 25E-1CL-15.5 30E-1CL-15.5 40E-1CL-15.5 50E-1CL-15.5 65E-1CL-15.5 80E-1CL-15.5 100E-1CL-15.5 125E-2CL-15.5 150E-3CL-15.5 175E-3CL-15.5 200E-3CL-15.5 225E-3CL-15.5 250E-3CL-15.5 300E-3CL-15.5 Old Catalog Number — — — Old Catalog Number — — — Old Catalog Number — — — — Size 10E 15E 20E 25E 30E 40E 50E 65E 80E 100E 125E 150E 225E 250E 300E 350E 400E 450E 500E 550E 600E Size 10E 15E 20E 25E 30E 40E 50E 65E 80E 100E 125E 150E 175E 200E 225E 250E 300E 350E Size 10E 15E 20E 25E 30E 40E 50E 65E 80E 100E 125 150E 175E 200E 225E 250E 300E A B .25 3.0 FIGURE 17 FIGURE 181.25 FIGURE 19 Dim. A (inches) Dim. B (inches) Max Interrupting Rating RMS (Asym) 16.38" 15.13" 80,000 17.38" 16.13" 80,000 17.38" 16.13" 80,000 Dim. A (inches) Dim. B (inches) Max Interrupting Rating RMS (Asym) 17.38" 16.13" 80,000 17.38" 16.13" 80,000 17.38" 16.13" 80,000 Dim. A (inches) Dim. B (inches) Max Interrupting Rating RMS (Asym) 19.8" 18.1" 60,000 22.81" 21.13" 60,000 22.81" 19.1" 60,000 22.81" 19.1" 60,000 Figure Number 17 17 17 17 17 17 17 17 17 17 17 17 18 18 18 18 18 18 19 19 19 Figure Number 17 17 17 17 17 17 17 17 17 17 18 18 18 18 18 18 18 19 Figure Number 17 17 17 17 17 17 17 17 17 17 18 19 19 19 19 19 19 71