Three tiers of protection offer distinct levels of performance benefits to help you speed up specification and selection.
Ultimate Protection – The best worry free protection in virtually any application. Unique dual-element construction delivers a powerful combination of all performance options in one fuse - fast short-circuit protection, current limitation, and time-delay performance with up to 300kA interrupting ratings.
Advanced Protection – Application specific protection for sensitive devices and critical components or motors and transformers. Choose between fast short-circuit, current limiting performance or energy efficient, current limiting, time-delay performance based on the application. Featuring 200kA interrupting ratings.
Basic Protection – Basic single-element protection for service, feeder and branch circuit applications. Featuring up to 100kA interrupting ratings.
Inside these three protection tiers are four distinct families - Low-Peak, FUSETRON, Limitron and General Purpose - each represented by a unique color for their key protection and performance benefits.
* 50% higher IR (300kA) than any other UL and CSA Listed fuse. Includes Class J, L and R fuses.
Fuse Class | Description - Product Detail Link | Data Sheet # |
---|---|---|
Up to 300kA Interrupting Rating for More Protection than any other Listed Fuse | ||
CC | LP-CC Low-Peak Current-Limiting, Time-Delay Fuses |
1023 1-30A |
J | LPJ Low-Peak Current-Limiting, Dual-Element Time-Delay Fuses | 1006 1-60A 1007 70-600A |
RK1 | LPN-RK 250V Low-Peak Current-Limiting, Dual-Element Time-Delay Fuses |
1003 1-60A 1004 70-600A |
LPS-RK 600V Low-Peak Current-Limiting, Dual-Element Time-Delay Fuses |
1001 1-60A 1002 70-600A |
|
L | KRP-C Low-Peak Current-Limiting, Dual-Element Time-Delay Fuses |
1008 601-2000A 1009 2001-6000A |
* Test results are based on weighted sales volume of FUSETRON and Ferraz Shawmut (Mersen) fuses by selected amp and volt rating combination. Next leading brand refers to Ferraz Shawmut based on third-party fuse market share data for a twenty-seven month period (July 2008 through September 2010).
Fuse Class | Description - Product Detail Link | Data Sheet # |
---|---|---|
Energy Efficient Time-Delay Protection | ||
RK5 |
FRN-R 250V FUSETRON Current-Limiting, Dual Element Time-Delay Fuses | 1019 1/10-60A 1020 70-600A |
FRS-R 600V FUSETRON Current-Limiting, Dual Element Time-Delay Fuses | 1017 1/10-60A 1018 70-600A |
* Does not include current limiting circuit breakers or current limiting fuses. Protection determined by comparing published values for let–through for Class CC, J, R, and T fuses versus a symmetrical RMS waveform at 200kA.
Fuse Class | Description - Product Detail Link | Data Sheet # |
---|---|---|
Short-Circuit Protection for Sensitive and Critical Components | ||
CC | FNQ-R Limitron Current-Limiting, Time-Delay Fuses | 1014 1/4-30A |
KTK-R Limitron Current-Limiting, Fast-Acting Fuses |
1015 1/10-30A | |
J | JKS Limitron Current-Limiting, Fast-Acting Fuses | 1026 1-60A 1027 70-600A |
L | KLU Limitron Current-Limiting, Time-Delay Fuses |
1013 601-4000A |
KTU Limitron Current-Limiting, Fast-Acting Fuses | 1010 601-6000A | |
RK1 | KTN-R 250V Limitron Current-Limiting, Fast-Acting Fuses |
1043 1-600A |
KTS-R 600V Limitron Current-Limiting, Fast-Acting Fuses |
1044 1-600A | |
T | JJN 300V Current-Limiting, Fast-Acting Fuses |
1025 1-1200A |
JJS 600V Current-Limiting, Fast-Acting Fuses |
1029 1-800A |
Fuse Class | Description - Product Detail Link | Data Sheet # |
---|---|---|
Basic Overcurrent Protection for Non-critical Applications | ||
K5 & H |
250V NON General Purpose Non-Current-Limiting One Time Fuses |
1030 1-600A |
600V NOS General Purpose Non-Current-Limiting One Time Fuses |
1030 1-600A | |
G | SC Current-Limiting Size Rejecting Fuses | 1024 1/2-60A |