Datasheet > 2R-1IB-5.5

2R-1IB-5.5

更新时间： 2024-10-31 22:09:51

品牌	Logo	应用领域
力特 - LITTELFUSE		/
页数	文件大小	规格书
12页	345K
描述
Medium Voltage Fuses

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2R-1IB-5.5 数据手册

Medium Voltage Fuses

ꢀ

2400 - 25,500 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.

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 pro-

tection. 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 trans-

formers, 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 inter-

rupt 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 the POWR-GARD Products

catalog (PF101).

Contact the factory or your local Littelfuse representative for

additional fuse ratings or custom mounting configurations.

24 Hour Emergency Service is available.

Call 1-800-227-0029.

APPLICATIONS

ꢀ

Power Transformer

Protection

ꢀ

Potential Transformer

Protection

ꢀ

Motor Controller Back-up

Protection

ꢀ

Fused Switches

ꢀ

Feeder Circuits

Bolt-in Mount Fuses

12 3 4 5 6 7...12

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