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400E2C2.75 Datasheet(PDF) 4 Page - Littelfuse

Part No. 400E2C2.75
Description  MEDIUM VOLTAGE FUSES 2,400-38,000 VAC Current-Limiting
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Manufacturer  LITTELFUSE [Littelfuse]
Direct Link  http://www.littelfuse.com
Logo LITTELFUSE - Littelfuse

400E2C2.75 Datasheet(HTML) 4 Page - Littelfuse

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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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