UL Fuse Classes

UL Fuse Classification Chart

Ul Class Fuse Overload Characteristics Interrupting Rating, Amperes AC Voltage Rating Available Ampere Ratings
L TIME-DELAY 200,000 600 200 – 6000
601 – 4000
200 – 2000
RK1*** TIME-DELAY 200,000 250
600
1/10 – 600
FAST-ACTING 200,000 250
600
1 – 600
RK5 TIME-DELAY 200,000 250
600
1/10 – 600
T FAST-ACTING 200,000 300
600
1 – 1200
1 – 1200
J TIME-DELAY 200,000 600 1 – 600
FAST-ACTING 200,000 600 1 – 600
CC TIME-DELAY 200,000 600 1/10 – 30
1/4 – 30
FAST-ACTING 200,000 600 1/10
CD TIME-DELAY 200,000 600 35 – 60
G TIME-DELAY 100,000 480 1/2 – 60
K5 FAST-ACTING 50,000 250
600
1 – 600
H Renewable Fuses Fast-Acting 10,000 250
600
1 – 600