Special Purpose Fuses
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Special Purpose Fuses
© 2005 Littelfuse • POWR-GARD™ Products Catalog
LFCL - 500 - C - 1
Terminal Material
Littelfuse
Cable Limiter
Type of
Termination
Conductor Size
(Aluminum or Copper)
Cable Limiters
600 Volts AC
Description Catalog Number
Type Termination Cable Size Cable Type
Copper Aluminum
1
Cable to Cable
4/0 LFCL4/0C1 LFCL4/0A1
250MCM LFCL250C1 LFCL250A1
350MCM LFCL350C1 LFCL350A1
500MCM LFCL500C1 LFCL500A1
750MCM LFCL750C1 LFCL750A1
3
Cable to Offset
Bus
4/0 LFCL4/0C3 LFCL4/0A3
250MCM LFCL250C3 LFCL250A3
350MCM LFCL350C3 LFCL350A3
500MCM LFCL500C3 LFCL500A3
750MCM LFCL750C3 LFCL750A3
5
Straight Bus to
Offset Bus
4/0 LFCL4/0C5 –
250MCM LFCL250C5 –
350MCM LFCL350C5 –
500MCM LFCL500C5 –
750MCM LFCL750C5 –
6
Mole to Cable
4/0 LFCL4/0C6 LFCL4/0A6
250MCM LFCL250C6 LFCL250A6
350MCM LFCL350C6 LFCL350A6
500MCM LFCL500C6 LFCL500A6
750MCM LFCL750C6 LFCL750A6
8
Mole to Offset
Bus
4/0 LFCL4/0C8 –
250MCM LFCL250C8 –
350MCM LFCL350C8 –
500MCM LFCL500C8 –
750MCM LFCL750C8 –
Cable limiters are fusible devices that provide very fast short-circuit
protection, primarily to faulted cables, but also to other conductors such
as busway. Cable limiters do not have an ampere rating, and cannot be
used to provide overload protection. They are instead selected by cable
size; for example, a 500 kcmil cable requires a 500 kcmil cable limiter.
Their main use is to isolate faulted cables in circuits containing three or
more parallel conductors per phase. They may be installed on the line
side of the main service to provide short-circuit protection to the service
conductors. This is especially important when service conductors are
tapped from large low voltage networks or from large low impedance
transformers.
Cable limiters have terminals which permit them to be installed in a
variety of equipment. The most common configuration is the offset
blade on one end and the crimp terminal on the other end. This permits
the limiter to replace a cable terminal (lug).
Applications
Service entrance conductors
Between transformer or network bus and busway terminal boxes
Large feeders with three or more conductors per phase
Features
• Current-limiting characteristics provide protection to conductor
insulation and reduce damage when faults occur.
• Properly applied cable limiters may permit the use of equipment with
reduced withstand ratings
• Wide variety of terminations and cable ratings permit use in almost
every situation.
Specifications
Voltage Rating: 600 volts AC
Interrupting Rating: 200,000 Amperes
Cable Size Range: 4⁄0 – 750MCM Copper or Aluminum
Note: For Type 5 and Type 8 Aluminum cable limiters, use the Copper Type C5
and C8.
Ordering Information
