300E-3C-15.5 datasheet, PDF - EEWORLD Datasheet

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300E-3C-15.5: DescriptionMEDIUM BLOW ELECTRIC FUSE, 300A, 15500VAC, 80000A (IR), INLINE/HOLDER; CategoryCircuit protection Circuit protection; File Size379KB，5 Pages; ManufacturerLittelfuse; Websitehttp://www.littelfuse.com

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300E-3C-15.5 Overview

MEDIUM BLOW ELECTRIC FUSE, 300A, 15500VAC, 80000A (IR), INLINE/HOLDER

300E-3C-15.5 Parametric

Parameter Name	Attribute value
Maker	Littelfuse
Reach Compliance Code	unknown
ECCN code	EAR99
Fusing characteristics	MEDIUM
body height	479.43 mm
Body length or diameter	247.05 mm
Circuit protection type	ELECTRIC FUSE
Installation features	INLINE/HOLDER
physical size	247.05mm x 479.43mm
Rated breaking capacity	80000 A
Rated current	300 A
Rated voltage (AC)	15500 V
surface mount	NO
Terminal shape	END CAP
Base Number Matches	1

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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.

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 cur-

rents, 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 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.

3"DIA

6.38"

9.75"

Dim.A

(Clip

Center)

Dim.B

FIGURE 14

FIGURE 15

FIGURE 16

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

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

—

Size

10E

15E

20E

25E

30E

40E

50E

65E

80E

100E

125E

150E

200E

125E

150E

175E

200E

225E

250E

300E

350E

400E

450E

Dim. A

(inches)

Dim. B

(inches)

Max

Interrupting

Rating

RMS (Asym)

10.875"

80,000

10.875"

80,000

Figure

Number

2.75 Max. KV

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