Brochure

Cable Limiters K Series
600 Volt Copper Limiters
Form No. Cable Limiters
Page 1 of 3
BIF Doc #1042
Bussmann
®
11-27-00
A00160
Catalog Symbol: K Series
Cable Limiters
Interrupting Rating: 200,000 Amperes, RMS Sym.
Voltage Rating: 600 Volts
General Information:
• Selection: unlike fuses, the current-carrying capacity
of cable limiters is denoted by cable size rather than
amperage.
• For example, a “4/0” limiter will carry the current of a 4/0
cable.
• Buss Cable Limiters help protect cables against short-
circuit currents.
• Increase system reliability.
• Under high short-circuit conditions, they can cut off fault
currents within one-half cycle (0.008 seconds).
• This fast action reduces insulation damage from the
immense heat that is developed by sustained fault current
flow (often 30,000, 50,000, 70,000, 150,000 amps
magnitude).
• Reduces the high build-up of mechanical forces due to
intense magnetic fields.
• Cable limiters help confine damage to the point of the
short-circuit. Help stop long-length cable burn-back and
striking of multiple arcs.
• Apart from the loss of power and operational shutdown,
short-circuits can do devastating damage to conductors.
• The cost of total replacement of cables, particularly when
they are buried underground, outweighs the nominal cost
of cable limiter protection.
• Without the protection of limiters, under short-circuit condi-
tions, a cable may continue to arc at several points and
cause severe damage to components of the system…it
does not necessarily burn clear.
• Buss Cable Limiters are short-circuit devices (unresponsive
to light cable overloads) with several types of terminal con-
nections to permit easy mechanical connection to a broad
range of cable sizes.
• Totally self-contained, static device.
• Unlike the open link-type limiters, there is no venting of
ionized gases or explosive action.
• Has stable, unchanging characteristics.
• High interrupting rating.
• Buss Cable Limiters withstand high short-circuit currents.
• Help provide compliance with NEC 110-9 and NEC 230-65.
• KDM, KDR, KDP and KFM copper cable limiters are UL list-
ed under File E990818. For use at 600 V, ac on faults up to
200,000 Amps.