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參數資料
| 型號： | 500E-4PT-2.4 |
| 元件分類： | 保險絲 |
| 英文描述： | ELECTRIC FUSE, 0.5A, 2750VAC, 37000A (IR), INLINE/HOLDER |
| 文件頁數： | 7/13頁 |
| 文件大小： | 410K |
| 代理商： | 500E-4PT-2.4 |
Medium Voltage Fuses
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2005 Littelfuse POWR-GARD Products Catalog
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 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.
NEMA 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 Number System
130-4R-1C-5.5
R Rated Medium Voltage Fuses
Current-Limiting
3"DIA
Dim.A
Clip
Center
6.38"
Dim.B
9.75"
A
D
DD
DDD
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.
Characteristics
Voltage Rating:
2,400 volts – 8,250 volts
Current Range:
2R – 36R
Options
Hermitically sealed for use in hazardous locations
(add “S” suffix to part number)
Bolt-in mounting configurations
R
Rated
Catalog
Number
Old
Catalog
Number
Size
Maximum
Continuous Current
@ 40 deg C.
Dim. A
(inches)
Dim. B
(inches)
Min. Interrupting
Rating RMS Amps
Max Interrupting
Rating RMS Asym
Figure
Number
2.
75
K
V
70-2R-1C-2.75
LCK 2R
2R
70
7"
10.875"
170
80,000
1
100-3R-1C-2.75
LCK 3R
3R
100
7"
10.875"
250
80,000
1
130-4R-1C-2.75
LCK 4R
4R
130
7"
10.875"
340
80,000
1
150-5R-1C-2.75
LCK 5R
5R
150
7"
10.875"
390
80,000
1
170-6R-1C-2.75
LCK 6R
6R
170
7"
10.875"
500
80,000
1
200-9R-1C-2.75
LCK 9R
9R
200
7"
10.875"
760
80,000
1
230-12R-1C-2.75
LCK 12R
12R
230
7"
10.875"
1000
80,000
1
390-18R-2C-2.75
LCK 18R
18R
390
7"
10.875"
1500
80,000
2
450-24R-2C-2.75
LCK 24R
24R
450
7"
10.875"
1950
80,000
2
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