gefran GFX4-IR Series Installation And Operation Manual page 11

2.6 i
nstallation
Products listed in table "UL508 SCCR FUSES TABLE " are suitable for use on a circuit capable of delivering not more
than 100,000 A rms Symmetrical Amperes, 480 Volts maximum when protected by fuses.
Use fuses only
According to UL508, test at 100.000A were carried out with class J fuses or RK5 rated xxxA (refer to table "SCCR fuse
protection table" to details of the current size fuses for the fuse).
After a shortcircuit the functioning of the device is not guaranteed.
After a short circuit the operation of the device is not guaranteed. To guarantee the functioning of the device after the
short circuit, it is recommend the use of extra rapid fuses as in table "EXTRARAPID FUSES".
ATTENTION: The opening of the branch-circuit protective device may be an indication that a fault has been
interrupted. To reduce the risk of fire or electric shock, current-carrying parts and other components of the device
should be examined and replaced if damaged. If burnout of the device occurs, the complete device must be replaced
or equivalent.
Model
GFX4-IR 30
GFX4-IR 60
GFX4-IR 80
The fuses on the above table are representative of all the fuses of the same class with lower current ratings
80404L_MHW_GFX4-IR_03-2020_ENG
UL508 SCCR FUSES TABLE
"Short circuit
current [Arms]"
100.000
100.000
100.000
"Max fuse
Fuse Class
size [A]"
30
30
100
"Max Voltage
[VAC]"
RK5 600
RK5 600
J 600
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