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5NLE2-300E Datasheet(PDF) 2 Page - Littelfuse |
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5NLE2-300E Datasheet(HTML) 2 Page - Littelfuse |
2 / 12 page 62 R Rated Medium Voltage Fuses Current Limiting FEATURES “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 over- load protection and locked rotor protection to the motor. The controllers are also intended to interrupt low value short cir- cuits within the capability of the motor controller. This pro- tects the medium voltage fuse from sustained overcurrents which are less than their minimum interrupting rating. NEMA Standards for “R” rated medium voltage power fuses require that they operate within 15-35 seconds when sub- jected to an rms current 100 times the “R” rating. For exam- ple, a fuse with a 2R rating will open within 15 to 35 seconds on an applied current of 2 x 100 = 200 amperes. Part Number System 130 - 4R -1C - 5.5 Catalog Number 70-2R-1C-2.75 100-3R-1C-2.75 130-4R-1C-2.75 150-5R-1C-2.75 170-6R-1C-2.75 200-9R-1C-2.75 230-12R-1C-2.75 390-18R-2C-2.75 450-24R-2C-2.75 3"DIA Dim.A Clip Center 6.38" Dim.B 9.75" D DD DDD Old Catalog Number LCK 2R LCK 3R LCK 4R LCK 5R LCK 6R LCK 9R LCK 12R LCK 18R LCK 24R Size 2R 3R 4R 5R 6R 9R 12R 18R 24R Maximum Continuous Current @ 40 deg C. 70 100 130 150 170 200 230 390 450 Dim. A (inches) 7" 7" Dim. B (inches) 10.875" 10.875" Minimum Interrupting Rating RMS Amps 170 250 340 390 500 760 1000 1500 1950 Max Interrupting Rating RMS Asym 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 Figure Number 1 1 1 1 1 1 1 2 2 CHARACTERISTICS Voltage Rating: 2,400 volts – 15,500 volts Current Range: 2R – 36R OPTIONS s Hermitically sealed for use in hazardous locations (add “S” suffix to part number) s Hookeye attachment (add “W” suffix to part number) s Bolt-in mounting configurations R RATED FIGURE 1 FIGURE 2 FIGURE 3 Hookeye Feature* *For hookeye attach- ment; add “W” suffix to part number Max Voltage (KV) Style (C-Cartridge) No. of Barrels Rating (size) Continuous Current Add “w” suffix to part number for hookeye attachment. Previous Next |
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