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KLNR12

更新时间： 2024-11-21 03:48:15
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力特 - LITTELFUSE /
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2页 185K
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General Purpose Fuses

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KLNR12 数据手册

 浏览型号KLNR12的Datasheet PDF文件第2页 
General Purpose Fuses  
KLNR/KLSR Class RK1 Fuses  
250/600 VAC • Fast Acting • 1 – 600 Amperes  
Applications  
Resistance heaters  
Lighting circuits  
Non-inductive loads  
Molded case circuit breaker load centers and panelboards have  
increased interrupting ratings when series rated with Littelfuse  
KLNR/KLSR Class RK1 fuses. Refer to panelboard manufacturer’s  
literature for UL Listed combination of fuses and panelboards. Series  
ratings up to 200,000 amperes are available.  
Safety  
•
•
•
200,000 A.I.R. — Reliable interruption of all overcurrents up to  
200,000 amperes.  
Extremely current-limiting — Stops damaging short-circuit current  
faster than any mechanical protective device.  
Fast-acting — Provides fast acting protection to equipment such  
as variable speed drives, rectifiers and other equipment containing  
surge-sensitive components.  
Longer Equipment Life  
•
Current-limiting design reduces damage to equipment caused by  
heating and magnetic effects of short-circuit currents.  
Economical  
•
Extremely current-limiting — often permits use of readily available,  
less costly equipment.  
Used as input or output fuses for surge sensitive components such  
as variable speed drives and rectifiers, fast acting KLNR/KLSR fuses  
may prevent opening of expensive semiconductor fuses protecting  
individual components.  
KLNR/KLSR series RK1 fuses were the earliest type of current-limiting  
fuses developed. Their single-element, silver link design enables them  
to provide fast-acting overload and short-circuit protection. When used  
to protect inductive loads such as motors, solenoids, and transformers,  
KLNR/KLSR series fuses must be greatly oversized to prevent opening  
the fuses on harmless in-rush currents. In such applications, KLNR/  
KLSR series fuses may only provide short-circuit protection.  
•
Easy To Use  
We recommend using POWR-PRO® LLNRK/LLSRK series Class RK1,  
dual-element, time-delay fuses in all new applications requiring the  
current-limiting ability of UL Class RK1 fuses. POWR-PRO LLNRK/  
LLSRK series fuses are also recommended in existing applications  
where fast-acting RK1 or RK5 fuses have been opening on harmless  
system surges such as motor starting currents.  
200,000 A.I.R. rating minimizes need for short-circuit calculations.  
•
Dimensions  
•
Refer to FLNR_ID for KLNR dimensions and FLSR_ID for KLSR  
dimensions.  
Specifications  
Ampere Ratings  
Voltage Ratings:  
AC: 250 Volts (KLNR); 600 Volts (KLSR)  
DC: 125 Volts (1 – 600A KLNR);  
250 Volts (1 – 30A KLSR);  
300 Volts (35 – 600A KLSR).  
AC: 200,000 amperes rms symmetrical  
DC: 20,000 amperes  
1 – 600 amperes.  
AC: Standard 248-12, Class RK1  
UL Listed (File No: E81895)  
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Interrupting Ratings:  
Ampere Range:  
Approvals:  
Example part number (series & amperage): KLNR 200  
CSA Certified (File No: LR29862)  
DC: Littelfuse self-certified  
Recommended Fuse Blocks  
LR250 series (for KLNR series fuses)  
LR600 series (for KLSR series fuses)  
Refer to the Blocks & Holders section of this catalog for additional information.  
34  
w w w . l i t t e l f u s e . c o m  
© 2005 Littelfuse POWR-GARD™ Products Catalog  
•
12

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