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400E2C5.5 Datasheet(PDF) 4 Page - Littelfuse |
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400E2C5.5 Datasheet(HTML) 4 Page - Littelfuse |
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4 / 10 page  POWR-GARD® Fuse Datasheet littelfuse.com © 2014 Littelfuse POWR-GARD® Products Rev: 063014 4 of 10 E-RATED MEDIUM VOLTAGE FUSES Description 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 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 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. 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. 3"DIA Dim.A Clip Center 6.38" Dim.B 9.75" A D DD DDD Figure 4 Figure 5 Figure 6 Characteristics Voltage Ratings 2,750 V – 38,000 V Current Range 10E – 600E Options • Hermetically sealed for use in hazardous locations (add “S” suffix to part number) • Clip-lock (CL) available. E-RATED ORDERING/CATALOG NUMBER SIZE DIM. A (INCHES) DIM. B (INCHES) MAX INTERRUPTING RATING RMS (ASYM)* FIGURE NUMBER 10E1C2.75 10E 7" 10.875" 80,000 4 15E1C2.75 15E 7" 10.875" 80,000 4 20E1C2.75 20E 7" 10.875" 80,000 4 25E1C2.75 25E 7" 10.875" 80,000 4 30E1C2.75 30E 7" 10.875" 80,000 4 40E1C2.75 40E 7" 10.875" 80,000 4 50E1C2.75 50E 7" 10.875" 80,000 4 65E1C2.75 65E 7" 10.875" 80,000 4 80E1C2.75 80E 7" 10.875" 80,000 4 100E-1C2.75 100E 7" 10.875" 80,000 4 125E1C2.75 125E 7" 10.875" 80,000 4 150E1C2.75 150E 7" 10.875" 80,000 4 200E1C2.75 200E 7" 10.875" 80,000 4 125E2C2.75 125E 7" 10.875" 80,000 5 150E2C2.75 150E 7" 10.875" 80,000 5 200E2C2.75 200E 7" 10.875" 80,000 5 250E2C2.75 250E 7" 10.875" 80,000 5 300E2C2.75 300E 7" 10.875" 80,000 5 350E2C2.75 350E 7" 10.875" 80,000 5 400E2C2.75 400E 7" 10.875" 80,000 5 450E2C2.75 450E 7" 10.875" 80,000 5 Dimensions * RMS Asymmetrical amperes = RMS Symmetrical amperes x 1.6 |
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