LDC1000 Ver la hoja de datos (PDF) - Littelfuse, Inc
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LDC1000 Datasheet PDF : 2 Pages
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LDC Series POWR-PRO® Class L Fuses
600 V AC/DC s 150 – 2000 Amperes
SPECIFICATIONS
Voltage Ratings: AC: 600 Volts
DC: 600 Volts
Interrupting Ratings:AC: 200,000 amperes rms symmetrical
DC: 50,000 amperes
(16 millisecond time-constant)
Ampere Range:150 – 2000 amperes
Approvals: Standard 248-10, Class L
UL Listed 601 – 2000 amps (File No: E81895)
UL Recognized 150 – 600 amps
(File No: E71611)
CSA Certified 150 – 2000 amps
(File No: LR29862)
AMPERE RATINGS
150
400
650
900 1300 1600
200
450
700 1000 1350 1800
250
500
750 1100 1400 1900
300
600
800 1200 1500 2000
350
601
Example part number (series & amperage): LDC 1200
DIMENSIONS
Please refer to the KLPC dimensions
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, ship and dock cranes, etc.
Mass transit systems, including new light rail applications
General-purpose AC/DC circuits for mains, feeders, and
branch circuits
FEATURES/BENEFITS
s 600 Volt AC/DC rated — “All-purpose” Class L fuse
reduces inventory requirements because the need for
special fuses is eliminated.
s 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.
s 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.
s 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.
s 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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