LDC Series -
600 V - UL Class L All Purpose AC/DC Fuses
Littelfuse POWR-PRO® LDC series Class L fuses represent another first in
fuse protection. LDC series fuses are the first UL Listed 600 volts AC
and DC Class L fuse. Since they may be used for both AC and DC, they
eliminate the concern that AC only fuses may be inserted into DC
circuits.
While LDC series fuses’ UL Listed DC interrupting rating is more than
adequate for most applications (50,000 amperes at a 16 millisecond time
constant), tests in our high power testing laboratory have shown that
this remarkable fuse is capable of performing at much longer time
constants. This makes the fuse uniquely suited for such applications as
crane rail circuits and mass transit systems. Contact the factory for
application information for special needs such as this.
For AC-only systems, consider the use of POWR-PRO® KLPC series fuses.
They have a full ten seconds time-delay at 500% rated current, and have a
wider range of ratings.
Applications:- UPS protection, especially for large battery circuits
- DC distribution
- DC variable speed drives
- Protection of crane rail circuits and other large DC equipment such as electrical power shovels, ships and dock cranes, etc.
- Mass transit systems, including new light rail applications
- General-purpose AC/DC circuits for mains, feeders and branch circuits
Features:- 600 Volt AC/DC rated — “All-purpose” Class L
fuse reduces inventory requirements because the need for special fuses
is eliminated.
- UL Listed 200,000 A.I.R. AC – 50,000 A.I.R. DC — Reliable
interruption of all overcurrents up to their ratings. Minimizes the
need for time-consuming and expensive short-circuit studies.
- Moderate time delay — Four seconds time delay at 500% current
provides adequate time-delay for many AC applications and most DC
applications. They will withstand most harmless overloads or line
surges. If your needs exceed the LDC capabilities, consider the use of
KLPC fuses for AC applications.
- Selective coordination — LDC series fuses coordinate well with
all Littelfuse fuses rated 600 amperes or less. A combination of LDC
and IDSR series fuses provide a complete 600 volt rated DC system.
- Extremely current limiting — Maximum current
limitation reduces damage to circuits and equipment under short-circuit
conditions. Stops damaging short circuits faster than any mechanical
protective device.
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