When choosing a fuse you should consider two things.
1. The first is the system voltage.
2. The second is the amperage rating of the system, always match the
fuse to the wire/cable amperage rating and the load. The load amperage
rating should not exceed the amp capacity of the wire or cable and the
components such as the Motor and Controller.
Class
T fuses have a high arc interrupt rating and are specially designed to
break
and smother a direct current arc when the fuse blows.
This
opens the circuit and can help prevent catastrophic battery damage.
A
Class T fuse should be placed as close to the battery(s) as
possible.
Everything
running into and out of your batteries should go through
the
Class T fuse.
The
d.c. voltage ratings on these Class T JJN fuses are:
15 to 100 amp fuses = 300 volts d.c.
101
to 600 amp fuses = 160 volts d.c.
801
to 1200 amp fuses = 170 volts d.c.
JLLN
fuses are the same dimensions as the JJN and have a 125 volt d.c.
rating.
A3T
fuses are the same dimensions as the JJN and JLLN and have a
160
volt d.c. rating.
Class
T fuses have an Arc Interrupt Rating Current
of 20,000 amps D.C. and
200,000
amps A.C.
Code
installations usually require a Class T fuse.
Widely
used in alternative energy, recreational vehicles rv,
telecommunications
and back-up
power
systems.
The
center to center hole spacing on the mounting tabs
are:
110 to 200 amp fuse app. 1.69 and the 225 to 400 amp
fuses
are app. 1.84".
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