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New industry Technology regarding to Bussmann fuse, ABB breakers, Amphenol connectors, HPS transformers, etc. 

Class L Fuse Cross Reference

Time:2022-12-21   Author:As Beam-L   Browse:

Class L fuses are fuses used for main switches and feeders of maintenance switchboards, bolted pressure contact switches, main circuits of motor control centers, branch circuits of large motors, primary and secondary protection for transformers, and protection of power circuit breakers.


All major mainstream fuses, such as Bussmann, Littelfuse and Mersen, have fuses of this class. Currently, due to capacity issues and material shortages, there may be delays in factory delivery. Today, I list their corresponding models here so that you can choose and replace them.

Class L Fuse.png

Time-delayFast ActingTime-delayTime-delay
A4BY601KTU-601KRP-R-601SPKLPC601Class L Fuses 600VAC 601A 
A4BY650KTU-650KRP-R-650SPKLPC650Class L Fuses 600VAC 650A 
A4BY700KTU-700KRP-R-700SPKLPC700Class L Fuses 600VAC 700A 
A4BY750KTU-750KRP-R-750SPKLPC750Class L Fuses 600VAC 750A 
A4BY800KTU-800KRP-R-800SPKLPC800Class L Fuses 600VAC 800A 
Class L Fuses 600VAC 801A 

Class L Fuses 600VAC 850A 
A4BY900KTU-900KRP-R-900SPKLPC900Class L Fuses 600VAC 900A 
A4BY1000KTU-1000KRP-R-1000SPKLPC1000Class L Fuses 600VAC 1000A 
A4BY1100KTU-1100KRP-R-1100SPKLPC1100Class L Fuses 600VAC 1100A 
A4BY1200KTU-1200KRP-R-1200SPKLPC1200Class L Fuses 600VAC 1200A 
A4BY1400KTU-1400KRP-R-1400SPKLPC1400Class L Fuses 600VAC 1400A 
A4BY1500KTU-1500KRP-R-1500SPKLPC1500Class L Fuses 600VAC 1500A 
A4BY1600KTU-1600KRP-R-1600SPKLPC1600Class L Fuses 600VAC 1600A 
A4BY1800KTU-1800KRP-R-1800SPKLPC1800Class L Fuses 600VAC 1800A 
A4BY2000KTU-2000KRP-R-2000SPKLPC2000Class L Fuses 600VAC 2000A 
Class L Fuses 600VAC 2001A 

KTU-2400KRP-R-2400SPKLPC2400Class L Fuses 600VAC 2400A 
A4BY2500KTU-2500KRP-R-2500SPKLPC2500Class L Fuses 600VAC 2500A 
A4BY3000KTU-3000KRP-R-3000SPKLPC3000Class L Fuses 600VAC 3000A 
A4BY3500KTU-3500KRP-R-3500SPKLPC3500Class L Fuses 600VAC 3500A 
A4BY4000KTU-4000KRP-R-4000SPKLPC4000Class L Fuses 600VAC 4000A 
A4BY5000KTU-5000KRP-R-5000SPKLPC5000Class L Fuses 600VAC 5000A 
A4BY6000KTU-6000KRP-R-6000SPKLPC6000Class L Fuses 600VAC 6000A 

New industry Technology regarding to Bussmann fuse, ABB breakers, Amphenol connectors, HPS transformers, etc. 

TAG:   Fuse Bussmann Littelfuse