Section Overview Littelfuse is your source for a fast replacement of - and R-rated medium voltage fuses. Our emergency service gets you the fuses you need quickly to minimize downtime of your critical operations. MDIUM VOLTAG FUSS Table of Contents Medium Voltage Fuses Overview... 46 R- Medium Voltage Fuses... 47-48 - Medium Voltage Fuses...49-52 xtended Clip Lock Design... 53 - Potential Transformer Fuses... 54 Live Parts... 55 45 www.littelfuse.com Courtesy of Steven ngineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com
MDIUM VOLTAG FUSS 2,400-38,000 VAC Current-limiting - and R-rated fuses are equipped with a mechanical indicator or striker pin that protrudes through the fuse cap upon operation of the fuse. This provides visual identification of a blown fuse and can be used as a trigger for external devices. 3 Medium Voltage Fuses Description Littelfuse offers a selection of - and R-rated medium voltage fuses for the protection of trans formers, potential transformers, feeders, and motor circuits. Single, double, and triple barrel designs are available to cover a wide range of current, voltage, and interrupting ratings. Conventional ferrule type, clip lock, and bolt-in mounting configurations are available for virtually any application. Hermetically sealed fuses for use in hazardous environments are also offered. Contact the factory or your local Littelfuse representative for additional fuse ratings or custom mounting configurations. 24-Hour mergency Service is available. Call 800-227-0029, Option 6. Applications Power Transformer Protection Potential Transformer Protection Motor Controller Back-up Protection Fused Switches Feeder Circuits Note: xtension distance 1 / 2 minimum; extension force 2 lb. minimum. General Information The terms Medium Voltage and High Voltage have been used interchangeably by many people to describe fuses operating above 600 volts. Technically speaking, medium voltage fuses are those intended for the voltage range from 2,400 to 38,000 VAC. High voltage fuses are for circuits carrying voltages greater than 38,000 VAC. -rated fuses are considered to be general purpose fuses and can be used to protect against low and high values of fault current. R-rated fuses are designed for back-up protection. They must be used in series with other devices such as motor overload relays in order to achieve both overload and short-circuit protection. Medium voltage fuses are not intended to provide overload protection in the same sense as fuses rated 600 volts or less. Medium voltage fuse current ratings do not have the same meanings as the ampere ratings of low voltage fuses. All medium voltage fuses are limited in their ability to interrupt low value overcurrents, especially those between 100% and 200% of the fuse s continuous current rating. They are designed to carry their rated current without exceeding the temperature rise permitted by NMA and ANSI standards. www.littelfuse.com 46 Courtesy of Steven ngineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com
R- medium voltage fuses Description R-rated fuses provide required short-circuit protection for medium voltage motors, motor controllers and associated circuitry. These components have limited ability to absorb the energy of large short-circuit currents. Medium voltage motor controllers contain overload relays which provide both overload protection and locked rotor protection to the motor. The controllers are also intended to interrupt low value short-circuits within the capability of the motor controller. This protects the medium voltage fuse from sustained overcurrents which are less than their minimum interrupting rating. NMA Standards for R-rated medium voltage power fuses require they operate within 15-35 seconds when subjected to an rms current 100 times the R rating. For example, a fuse with a 2R rating will open within 15 to 35 seconds on an applied current of 2 x 100 = 200 amperes. Part System 130-4R-1C-5.5 Characteristics Voltage Ratings: Current Range: Options 2,750 V 8,250 V 2R 36R Hermetically sealed for use in hazardous locations (add S suffix to part number) Bolt-in mounting configurations Hookeye Feature* For hookeye attachment; add W suffix to part number 3 Medium Voltage Fuses Dimensions Dim.A Clip Center 3"D A Dim.B 6.38" Max Voltage (KV) Style: C (Cartridge) B (Bolt Mount) IB (Inverted Bolt Mount) BI (Bolt-In Mount) No. of Barrels Rating (size) Continuous Current 9.75" * See web for Bolt Mount, Inverted Bolt Mount, and Bolt-W dimensions Medium Voltage Fuse Protection POWR-GARD medium voltage fuses provide short-circuit protection for motors and transformers rated 2,400 to 38,000 volts AC. Visit www.littelfuse.com/technicalcenter for additional protection tables, sizing recommendations, and applications. 1 2 3 Cartridge C Bolt Mount B Sample Part #: 130-4R-1B-5.5 Inverted-Bolt IB Sample Part #: 130-4R-1IB-5.5 Bolt-In Mount BI Sample Part #: 130-4R-1BI-5.5 47 www.littelfuse.com Courtesy of Steven ngineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com
3 Medium Voltage Fuses R- Medium Voltage Fuses R 2.75 KV R 5.5 KV R 5.5 KV 14 Clip Centers system/ Catalog system/ Catalog Size Continuous Current @ 40 Degrees C Dim. A Dim. B Minimum Amps (Asym) 702R1C5.5 2R 70 12" 15.875" 170 80,000 1 1003R1C5.5 3R 100 12" 15.875" 250 80,000 1 1304R1C5.5 4R 130 12" 15.875" 340 80,000 1 1505R1C5.5 5R 150 12" 15.875" 390 80,000 1 1706R1C5.5 6R 170 12" 15.875" 500 80,000 1 2009R1C5.5 9R 200 12" 15.875" 760 80,000 1 23012R1C5.5 12R 230 12" 15.875" 1000 80,000 1 39018R2C5.5 18R 390 12" 15.875" 1500 80,000 2 45024R2C5.5 24R 450 12" 15.875" 1950 80,000 2 48026R2C5.5 26R 480 12" 15.875" 2100 80,000 2 55030R2C5.5 30R 550 12" 15.875" 2400 80,000 2 60032R2C5.5 32R 600 12" 15.875" 2600 80,000 2 65036R2C5.5 36R 650 12" 15.875" 2900 80,000 2 55030R3C5.5 30R 550 12" 15.875" 2400 80,000 3 60032R3C5.5 32R 600 12" 15.875" 2600 80,000 3 65036R3C5.5 36R 650 12" 15.875" 2900 80,000 3 system/ Catalog Size Size Continuous Current @ 40 Degrees C Continuous Current @ 40 Degrees C Dim. A Dim. A Dim. B Dim. B Minimum Amps Minimum Amps (Asym) 702R1C2.75 2R 70 7" 10.875" 170 80,000 1 1003R1C2.75 3R 100 7" 10.875" 250 80,000 1 1304R1C2.75 4R 130 7" 10.875" 340 80,000 1 1505R1C2.75 5R 150 7" 10.875" 390 80,000 1 1706R1C2.75 6R 170 7" 10.875" 500 80,000 1 2009R1C2.75 9R 200 7" 10.875" 760 80,000 1 23012R1C2.75 12R 230 7" 10.875" 1000 80,000 1 39018R2C2.75 18R 390 7" 10.875" 1500 80,000 2 45024R2C2.75 24R 450 7" 10.875" 1950 80,000 2 (Asym) 702R1C5.5X 2R 70 14" 17.875" 170 80,000 1 1003R1C5.5X 3R 100 14" 17.875" 250 80,000 1 1304R1C5.5X 4R 130 14" 17.875" 340 80,000 1 1505R1C5.5X 5R 150 14" 17.875" 390 80,000 1 1706R1C5.5X 6R 170 14" 17.875" 500 80,000 1 2009R1C5.5X 9R 200 14" 17.875" 760 80,000 1 23012R1C5.5X 12R 230 14" 17.875" 1000 80,000 1 39018R2C5.5X 18R 390 14" 17.875" 1500 80,000 2 45024R2C5.5X 24R 450 14" 17.875" 1950 80,000 2 55030R2C5.5X 30R 550 14 17.875 2400 80,000 2 R 8.25 KV www.littelfuse.com system/ Catalog Size Continuous Current @ 40 Degrees C Dim. A Dim. B Minimum Amps (Asym) 702R1C8.25 2R 70 12" 15.875" 190 80,000 1 1003R1C8.25 3R 100 12" 15.875" 225 80,000 1 1304R1C8.25 4R 130 12" 15.875" 330 80,000 1 1505R1C8.25 5R 150 12" 15.875" 440 80,000 1 1706R1C8.25 6R 170 12" 15.875" 500 80,000 1 2009R1C8.25 9R 200 12" 15.875" 740 80,000 1 23012R1C8.25 12R 230 12" 15.875" 955 80,000 1 39018R2C8.25 18R 390 12" 15.875" 1440 80,000 2 45024R2C8.25 24R 450 12" 15.875" 1910 80,000 2 For hookeye attachment; add W suffix to part number 48 Courtesy of Steven ngineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com
- Medium Voltage Fuses Description -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 fault currents. NMA Standards for -rated medium voltage fuses require that fuses rated 100 or less open within 300 seconds (5 minutes) when subjected to an RMS value of 200-240% of the fuse continuous current rating; and fuses with an rating larger than 100 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. Application Note Since these fuses are used for the protection of general purpose circuits which may contain transformers, motors, and other equipment producing in-rush 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. Characteristics Voltage Ratings: Current Range: Options Dim A Clip Center 3"D A Dim B 2,750 V 38,000 V 10 600 Hermetically sealed for use in hazardous locations (add S suffix to part number) Clip-lock (CL) and bolt-in styles available. Dimensions 6 38" 9 75" 4 5 6 3 Medium Voltage Fuses 2.75 Max. KV 101C2.75 10 7" 10.875" 80,000 4 151C2.75 15 7" 10.875" 80,000 4 201C2.75 20 7" 10.875" 80,000 4 251C2.75 25 7" 10.875" 80,000 4 301C2.75 30 7" 10.875" 80,000 4 401C2.75 40 7" 10.875" 80,000 4 501C2.75 50 7" 10.875" 80,000 4 651C2.75 65 7" 10.875" 80,000 4 801C2.75 80 7" 10.875" 80,000 4 100-1C2.75 100 7" 10.875" 80,000 4 1251C2.75 125 7" 10.875" 80,000 4 1501C2.75 150 7" 10.875" 80,000 4 2001C2.75 200 7" 10.875" 80,000 4 1252C2.75 125 7" 10.875" 80,000 5 1502C2.75 150 7" 10.875" 80,000 5 2002C2.75 200 7" 10.875" 80,000 5 2252C2.75 225 7" 10.875" 80,000 5 2502C2.75 250 7" 10.875" 80,000 5 3002C2.75 300 7" 10.875" 80,000 5 3502C2.75 350 7" 10.875" 80,000 5 4002C2.75 400 7" 10.875" 80,000 5 4502C2.75 450 7" 10.875" 80,000 5 49 www.littelfuse.com Courtesy of Steven ngineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com
- Medium Voltage Fuses 3 Medium Voltage Fuses 5.5 Max. KV number 101C5.5 10 12" 15.875" 80,000 4 151C5.5 15 12" 15.875" 80,000 4 201C5.5 20 12" 15.875" 80,000 4 251C5.5 25 12" 15.875" 80,000 4 301C5.5 30 12" 15.875" 80,000 4 401C5.5 40 12" 15.875" 80,000 4 501C5.5 50 12" 15.875" 80,000 4 651C5.5 65 12" 15.875" 80,000 4 801C5.5 80 12" 15.875" 80,000 4 1001C5.5 100 12" 15.875" 80,000 4 1251C5.5 125 12" 15.875" 80,000 4 1501C5.5 150 12" 15.875" 80,000 4 1751C5.5 175 12" 15.875" 80,000 4 2001C5.5 200 12" 15.875" 80,000 4 1252C5.5 125 12" 15.875" 80,000 5 1502C5.5 150 12" 15.875" 80,000 5 1752C5.5 175 12" 15.875" 80,000 5 2002C5.5 200 12" 15.875" 80,000 5 2502C5.5 250 12" 15.875" 80,000 5 3002C5.5 300 12" 15.875" 80,000 5 3502C5.5 350 12" 15.875" 80,000 5 4002C5.5 400 12" 15.875" 80,000 5 4502C5.5 450 12" 15.875" 80,000 5 5003C5.5 500 12" 15.875" 80,000 6 5503C5.5 550 12" 15.875" 80,000 6 6003C5.5 600 12" 15.875" 80,000 6 5.5 Max. KV number 5NL10 10 14 17 7 8" 80,000 4 5NL15 15 14 17 7 8" 80,000 4 5NL20 20 14 17 7 8" 80,000 4 5NL25 25 14 17 7 8" 80,000 4 5NL30 30 14 17 7 8" 80,000 4 5NL40 40 14 17 7 8" 80,000 4 5NL50 50 14 17 7 8" 80,000 4 5NL65 65 14 17 7 8" 80,000 4 5NL80 80 14 17 7 8" 80,000 4 5NL100 100 14 17 7 8" 80,000 4 5NL125 125 14 17 7 8" 80,000 4 5NL150 150 14 17 7 8" 80,000 4 5NL175 175 14 17 7 8" 80,000 4 5NL200 200 14 17 7 8" 80,000 4 5NL2225 225 14 17 7 8" 80,000 5 5NL2250 250 14 17 7 8" 80,000 5 5NL2300 300 14 17 7 8" 80,000 5 5NL2350 350 14 17 7 8" 80,000 5 5NL2400 400 14 17 7 8" 80,000 5 5NL2450 450 14 17 7 8" 80,000 5 www.littelfuse.com 50 Courtesy of Steven ngineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com
- Medium Voltage Fuses 8.25 Max. KV 8.25 Max. KV number 101C8.25 10 12" 15 7 8" 80,000, 4 151C8.25 15 12" 15 7 8" 80,000 4 201C8.25 20 12" 15 7 8" 80,000 4 251C8.25 25 12" 15 7 8" 80,000 4 301C8.25 30 12" 15 7 8" 80,000 4 401C8.25 40 12" 15 7 8" 80,000 4 501C8.25 50 12" 15 7 8" 80,000 4 651C8.25 65 12" 15 7 8" 80,000 4 801C8.25 80 12" 15 7 8" 80,000 4 1001C8.25 100 12" 15 7 8" 80,000 4 1251C8.25 125 12" 15 7 8" 80,000 4 1501C8.25 150 12" 15 7 8" 80,000 4 1252C8.25 125 12" 15 7 8" 80,000 5 1502C8.25 150 12" 15 7 8" 80,000 5 2002C8.25 200 12" 15 7 8" 80,000 5 2502C8.25 250 12" 15 7 8" 80,000 5 3002C8.25 300 12" 15 7 8" 80 000 5 3503C8.25 350 12" 15 7 8" 80,000 6 4003C8.25 400 12" 15 7 8" 80,000 6 number 8NL10 10 14" 17 7 8" 80,000 4 8NL15 15 14" 17 7 8" 80,000 4 8NL20 20 14" 17 7 8" 80,000 4 8NL25 25 14" 17 7 8" 80,000 4 8NL30 30 14" 17 7 8" 80,000 4 8NL40 40 14" 17 7 8" 80,000 4 8NL50 50 14" 17 7 8" 80,000 4 8NL65 65 14" 17 7 8" 80,000 4 8NL80 80 14" 17 7 8" 80,000 4 8NL100 100 14" 17 7 8" 80,000 4 8NL2100 100 14" 17 7 8" 80,000 5 8NL2125 125 14" 17 7 8" 80,000 5 8NL2150 150 14" 17 7 8" 80,000 5 8NL2200 200 14" 17 7 8" 80,000 5 8NL2250 250 14" 17 7 8" 80,000 5 3 Medium Voltage Fuses 15.5 Max. KV number 101C15.5 10 15" 18.875" 80,000 4 151C15.5 15 15" 18.875" 80,000 4 201C15.5 20 15" 18.875" 80,000 4 251C15.5 25 15" 18.875" 80,000 4 301C15.5 30 15" 18.875" 80,000 4 401C15.5 40 15" 18.875" 80,000 4 501C15.5 50 15" 18.875" 80,000 4 651C15.5 65 15" 18.875" 80,000 4 801C15.5 80 15" 18.875" 80,000 4 1001C15.5 100 15" 18.875" 80,000 4 652C15.5 65 15" 18.875" 80,000 5 802C15.5 80 15" 18.875" 80,000 5 1002C15.5 100 15" 18.875" 80,000 5 1252C15.5 125 15" 18.875" 80,000 5 1502C15.5 150 15" 18.875" 80,000 5 1752C15.5 175 15" 18.875" 80,000 5 2002C15.5 200 15" 18.875" 80,000 5 2003C15.5 200 15" 18.875" 80,000 6 2503C15.5 250 15" 18.875" 80,000 6 3003C15.5 300 15" 18.875" 80,000 6 51 www.littelfuse.com Courtesy of Steven ngineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com
- Medium Voltage Fuses 15.5 Max. KV 15GS65 65 18" 21 7 8" 60,000 4 15GS80 80 18" 21 7 8" 60,000 4 15GS100 100 18" 21 7 8" 60,000 4 15GS2125 125 18" 21 7 8" 60,000 5 15GS2150 150 18" 21 7 8" 60,000 5 15GS2175 175 18" 21 7 8" 60,000 5 15GS2200 200 18" 21 7 8" 60,000 5 3 Medium Voltage Fuses 15.5 Max. KV 15NL10 10 20" 23 7 8" 60,000 4 15NL15 15 20" 23 7 8" 60,000 4 15NL20 20 20" 23 7 8" 60,000 4 15NL25 25 20" 23 7 8" 60,000 4 15NL30 30 20" 23 7 8" 60,000 4 15NL40 40 20" 23 7 8" 60,000 4 15NL50 50 20" 23 7 8" 60,000 4 15NL65 65 20" 23 7 8" 60,000 4 15NL80 80 20" 23 7 8" 60,000 4 15NL100 100 20" 23 7 8" 60,000 4 15NL280 80 20" 23 7 8" 60,000 5 15NL2100 100 20" 23 7 8" 60,000 5 15NL2125 125 20" 23 7 8" 60,000 5 15NL2150 150 20" 23 7 8" 60,000 5 15NL2175 175 20" 23 7 8" 60,000 5 15NL2200 200 20" 23 7 8" 60,000 5 15NL3150 150 20" 23 7 8" 60,000 6 15NL3175 175 20" 23 7 8" 60,000 6 15NL3250 250 20" 23 7 8" 60,000 6 15NL3300 300 20" 23 7 8" 60,000 6 25.8 Max. KV 38 Max. KV 151C25.8 15 21" 24 5 8" 40,000 4 201C25.8 20 21" 24 5 8" 40,000 4 251C25.8 25 21" 24 5 8" 40,000 4 301C25.8 30 21" 24 5 8" 40,000 4 401C25.8 40 21" 24 5 8" 40,000 4 501C25.8 50 21" 24 5 8" 40,000 4 652C25.8 65 21" 24 5 8" 40,000 5 802C25.8 80 21" 24 5 8" 40,000 5 1002C25.8 100 21" 24 5 8" 40,000 5 31C38.0 3 27" 30 5 8" 20,000 4 71C38.0 7 27" 30 5 8" 20,000 4 101C38.0 10 27" 30 5 8" 20,000 4 151C38.0 15 27" 30 5 8" 20,000 4 201C38.0 20 27" 30 5 8" 20,000 4 251C38.0 25 27" 30 5 8" 20,000 4 301C38.0 30 27" 30 5 8" 20,000 4 401C38.0 40 27" 30 5 8" 20,000 4 502C38.0 50 27" 30 5 8" 20,000 5 652C38.0 65 27" 30 5 8" 20,000 5 802C38.0 80 27" 30 5 8" 20,000 5 www.littelfuse.com 52 Courtesy of Steven ngineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com
- Medium Voltage Fuses Dimensions in inches 4.75 7.94 11.56 Clip Lock Design 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. 1.25 A B 1.25 7 8 9 3.0.25 5.5 Max. KV Clip Lock 8.25 Max. KV Clip Lock 15.5 Max. KV Clip Lock 101CL5.5 10 16.38" 15.13" 80,000 7 151CL5.5 15 16.38" 15.13" 80,000 7 201C5.5 20 16.38" 15.13" 80,000 7 251CL5.5 25 16.38" 15.13" 80,000 7 301CL5.5 30 16.38" 15.13" 80,000 7 401CL5.5 40 16.38" 15.13" 80,000 7 501CL5.5 50 16.38" 15.13" 80,000 7 651CL5.5 65 16.38" 15.13" 80,000 7 801CL5.5 80 16.38" 15.13" 80,000 7 1001CL5.5 100 16.38" 15.13" 80,000 7 1251CL5.5 125 16.38" 15.13" 80,000 7 1501CL5.5 150 16.38" 15.13" 80 000 7 2252CL5.5 225 17.38" 16.13" 80,000 8 2502CL5.5 250 17.38" 16.13" 80,000 8 3002CL5.5 300 17.38" 16.13" 80,000 8 3502CL5.5 350 17.38" 16.13" 80,000 8 4002CL5.5 400 17.38" 16.13" 80,000 8 4502CL5.5 450 17.38" 16.13" 80 000 8 5003CL5.5 500 17.38" 16.13" 80,000 9 5503CL5.5 550 17.38" 16.13" 80,000 9 6003CL5.5 600 17.38" 16.13" 80,000 9 101CL8.25 10 17.38" 16.13" 80,000 7 151CL8.25 15 17.38" 16.13" 80,000 7 201C8.25 20 17.38" 16.13" 80,000 7 251CL8.25 25 17.38" 16.13" 80,000 7 301CL8.25 30 17.38" 16.13" 80,000 7 401CL8.25 40 17.38" 16.13" 80,000 7 501CL8.25 50 17.38" 16.13" 80,000 7 651CL8.25 65 17.38" 16.13" 80,000 7 801CL8.25 80 17.38" 16.13" 80,000 7 1001CL8.25 100 17.38" 16.13" 80 000 7 1252CL8.25 125 17.38" 16.13" 80,000 8 1502CL8.25 150 17.38" 16.13" 80,000 8 1752CL8.25 175 17.38" 16.13" 80,000 8 2002CL8.25 200 17.38" 16.13" 80,000 8 2252CL8.25 225 17.38" 16.13" 80,000 8 2502CL8.25 250 17.38" 16.13" 80,000 8 3002CL8.25 300 17.38" 16.13" 80 000 8 3503CL8.25 350 17.38" 16.13" 80,000 9 101CL15.5 10 19.8" 18.1" 60,000 7 151CL15.5 15 19.8" 18.1" 60,000 7 201CL15.5 20 19.8" 18.1" 60,000 7 251CL15.5 25 19.8" 18.1" 60,000 7 301CL15.5 30 19.8" 18.1" 60,000 7 401CL15.5 40 19.8" 18.1" 60,000 7 501CL15.5 50 19.8" 18.1" 60 000 7 651CL15.5 65 22.81" 21.13" 60,000 7 801CL15.5 80 22.81" 21.13" 60,000 7 1001CL15.5 100 22.81" 21.13" 60 000 7 1252CL15.5 125 22.81" 19.1" 60,000 8 1502CL15.5 150 22.81 19.1 60,000 8 1752CL15.5 175 22.81" 19.1" 60,000 8 2002CL15.5 200 22.81 19.1 60 000 8 1503CL15.5 150 22.81" 19.1" 60,000 9 2003CL15.5 200 22.81" 19.1" 60,000 9 2503CL15.5 250 22.81" 19.1" 60,000 9 3003CL15.5 300 22.81" 19.1" 60,000 9 3 Medium Voltage Fuses 53 www.littelfuse.com Courtesy of Steven ngineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com
- Potential transformer fuses Description Potential Transformer (PT) fuses are current-limiting fuses with high interrupting ratings designed for the protection of potential transformers. Characteristics Voltage Ratings: 625 VAC 25,800 VAC Current Range: 1/2 10 3 Medium Voltage Fuses Application Note When applying fuses for the protection of transformers, the magnetizing current in-rush must be considered. The characteristics of the in-rush, which can be matched with a fuse time-current curve, should be available from the transformer manufacturer. 625 Volt 2.75 Max. kv 2.75 Max. KV 4.8 Max. kv 5.5 Max. kv 8.25 Max. kv 15.5 Max. kv 25.8 Max. kv Size Dimension A Dimensions A Diameter Dimension B B (Sym) 34PT6 3 4.6 0.8125 37,500 54PT6 5 4.6 0.8125 37,500 74PT6 7 4.6 0.8125 37,500 104PT6 10 4.6 0.8125 37,500 5004PT2.4 1/2 4.6 0.8125 37,500 14PT2.4 1 4.6 0.8125 37,500 24PT2.4 2 4.6 0.8125 37,500 16PT2.75 1 7.4 1.5625 37,500 26PT2.75 2 7.4 1.5625 37,500 36PT2.75 3 7.4 1.5625 37,500 18PT2.75 1 9.5 1.5625 37,500 28PT2.75 2 9.5 1.5625 37,500 38PT2.75 3 9.5 1.5625 37,500 15PT4.8 1 5.6 0.8125 50,000 25PT4.8 2 5.6 0.8125 50,000 1/26PT5.5 1/2 7.4 1.5625 50,000 16PT5.5 1 7.4 1.5625 50,000 26PT5.5 2 7.4 1.5625 50,000 36PT5.5 3 7.4 1.5625 50,000 56PT5.5 5 7.4 1.5625 50,000 1/28PT5.5 1/2 9.5 1.5625 50,000 18PT5.5 1 9.5 1.5625 50,000 28PT5.5 2 9.5 1.5625 50,000 38PT5.5 3 9.5 1.5625 50,000 58PT5.5 5 9.5 1.5625 50,000 108PT5.5 10 9.5 1.5625 50,000 1/28PT8.25 1/2 9.5 1.5625 50,000 18PT8.25 1 9.5 1.5625 50,000 28PT8.25 2 9.5 1.5625 50,000 38PT8.25 3 9.5 1.5625 50,000 1/211PT15.5 1/2 12.8 1.5625 35,000 111PT15.5 1 12.8 1.5625 35,000 211PT15.5 2 12.8 1.5625 35,000 311PT15.5 3 12.8 1.5625 35,000 316PT15.5 3 17.5 1.5625 35,000 516PT15.5 5 17.5 1.5625 35,000 1/216PT25.5 1/2 17.5 1.5625 32,000 116PT25.5 1 17.5 1.5625 32,000 www.littelfuse.com 54 Courtesy of Steven ngineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com
live parts Description Live parts are available for mounting, R, and PT single, double, and triple barrel fuses. Mounting clips are available for ferrule type and clip lock style fuses. All clips are sold in pairs. Part : 700-156 System : 0700156.Z For use with 1 9 / 16" to 1 5 /8 (1.625 ) diameter PT fuses. Dimensions in inches Part : 700-300 System : 0700300.Z For use with 3" diameter fuses. Dimensions in inches 2.00 3 Medium Voltage Fuses 3.74 2.85 Part : 700-500 System : 0700500.Z For use with all 13 / 16" (.8125 ) diameter PT fuses 08 Part : 700-530 System : 0700530.Z For use with all 3" diameter fuses. Dimensions in inches 31 Dimensions in inches 78 71 30 08.038" HOLS 1 15 05 1.50 3.08 4.50 4.16 78 63 Part : 700-520-CL System : 0700520.ZXCL Clip Lock Design Mounting Details for Clip Lock Dimensions in inches 3 63 TR PL BARRL 3 63 DOUBL BARRL Bo om Lever n Closed Posi ion Dimensions for reference only. Blown Fuse ndica or 2 00 4 9 TOP V W 4 85 3 75 2 00 Top Lever in Open Posi ion S NGL BARRL 1 00 A 2 00 1 75 56 Dia (2) Holes For Moun ing Cable/Bus 44 D A (2) HOLS 55 www.littelfuse.com Courtesy of Steven ngineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com