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300E-2C-2.75S PDF预览

300E-2C-2.75S

更新时间： 2024-11-07 21:19:23
品牌 Logo 应用领域
力特 - LITTELFUSE 电路保护
页数 文件大小 规格书
8页 376K
描述
Electric Fuse, Medium Blow, 300A, 2750VAC, 80000A (IR), Inline/holder,

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300E-2C-2.75S 技术参数

生命周期：ActiveReach Compliance Code：unknown
ECCN代码：EAR99风险等级：5.76
其他特性：HERMITICALLY SEALED PART NUMBER熔断特性：MEDIUM
主体高度：276.23 mm主体长度或直径：162.05 mm
电路保护类型：ELECTRIC FUSE安装特点：INLINE/HOLDER
物理尺寸：162.05mm x 276.23mm额定分断能力：80000 A
额定电流：300 A额定电压（交流）：2750 V
表面贴装：NO端子形状：END CAP
Base Number Matches：1

300E-2C-2.75S 数据手册

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Medium Voltage Fuses  
Medium Voltage Fuses  
2,400 - 38,000 VAC • Current-Limiting  
Current-limiting “E” and “R” rated fuses  
are equipped with a mechanical indicator  
or striker pin that protrudes through the  
fuse cap upon operation of the fuse. This  
provides visual identification of a blown  
fuse and can be used as a trigger for  
external devices.  
Note: Extension distance 1/2” min; extension  
force 2lb. min  
General Information  
The terms “Medium Voltage” and “High Voltage” have been used  
interchangeably by many people to describe fuses operating above 600  
volts. Technically speaking, “medium voltage” fuses are those intended  
for the voltage range from 2,400 to 38,000 VAC. “High voltage” fuses  
are for circuits carrying voltages greater than 38,000 VAC.  
“E” rated fuses are considered to be general purpose fuses and can be  
used to protect against low and high values of fault current. “R” rated  
fuses are designed for back-up protection. They must be used in series  
with other devices such as motor overload relays in order to achieve  
both overload and short-circuit protection.  
Medium voltage fuses are not intended to provide overload protection in  
the same sense as fuses rated 600 volts or less. Medium voltage fuse  
current ratings do not have the same meanings as the ampere ratings of  
low voltage fuses.  
Littelfuse now offers a complete selection of “E” and “R” rated  
medium voltage fuses for the protection of transformers, potential  
transformers, feeders, and motor circuits. Single, double, and triple  
barrel designs are available to cover a wide range of current, voltage,  
and interrupting ratings. Conventional ferrule type, clip lock, and bolt-in  
mounting configurations are now available for virtually any application.  
Hermetically sealed fuses for use in hazardous environments are also  
offered.  
All medium voltage fuses are limited in their ability to interrupt low value  
overcurrents, especially those between 100% and 200% of the fuse’s  
continuous current rating. They are designed to carry their rated current  
without exceeding the temperature rise permitted by NEMA and ANSI  
standards.  
Additional application data can be found in the Fuse Application section  
of this catalog.  
Contact the factory or your local Littelfuse representative for additional  
fuse ratings or custom mounting configurations.  
24 Hour Emergency Service is available. Call 847 824 1188.  
Applications  
Power Transformer Protection  
Potential Transformer Protection  
Motor Controller Back-up Protection  
Fused Switches  
Feeder Circuits  
Bolt-in Mount Fuses  
64  
w w w . l i t t e l f u s e . c o m  
© 2005 Littelfuse POWR-GARD™ Products Catalog  
•
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