E-Rated CL-14 Medium Voltage Fuses for Transformer and
Feeder Protection
8.3kV ECL083 Series
Electrical Characteristics
IR Max # of Figure
Part Number Amps Volts Sym. Barrels # Style
ECL083-65E 65 8.3kV 50kA 1 1 Clip-Lock
ECL083-80E 80 8.3kV 50kA 1 1 Clip-Lock
ECL083-100E 100 8.3kV 50kA 1 1 Clip-Lock
ECL083-125E 125 8.3kV 50kA 1 1 Clip-Lock
ECL083-150E 150 8.3kV 50kA 1 1 Clip-Lock
ECL083-175E 175 8.3kV 50kA 1 1 Clip-Lock
ECL083-200E 200 8.3kV 50kA 2 2 Clip-Lock
ECL083-250E 250 8.3kV 50kA 2 2 Clip-Lock
ECL083-300E 300 8.3kV 50kA 2 2 Clip-Lock
ECL083-350E 350 8.3kV 50kA 2 2 Clip-Lock
Part Number Construction
Catalog Voltage Amp
Symbol Rating Rating
Example ECL 083 300
083 = 8.3kV 300 = 300 Amps
Features:
• General Purpose Fuses. Cooper Bussmann medium
voltage fuses provide general purpose protection
and are capable of interrupting fault currents up to
50kA RMS sym.
• Clip-Lock Double Barrel Fuse Design.
• The filament wound, glass epoxy fuse tube provides
moisture protection for the fuse. This makes Cooper
Bussmann medium voltage fuses suitable for both
indoor and outdoor application (outdoor applications
require installation inside an appropriate enclosure).
• Open Fuse Indication. Indicator travel distance is
16mm.
• Operating Frequency: 50/60Hz
• Dimensional Data: See page 2.
• Performance Curves: See pages 3-4.
Current-limiting medium voltage fuses are
classified into three categories:
Full Range - Defined by ANSI as “a fuse capable of
interrupting all currents from the maximum rated
interrupting current down to the minimum continuous
current that causes melting of the fusible element(s),
when the fuse is applied at the maximum ambient
temperature specified by the manufacturer.” It is able
to interrupt any normal 60 cycle current that will melt
its element.
General Purpose - Defined by ANSI C37.40 as “a fuse
capable of interrupting all currents from the
maximum rated interrupting current down to the
current that causes melting of the fusible element in
one hour.” Not all currents fall within this range. It is
possible to receive an overcurrent lower than the
value given by the one hour criterion.
Back-up - Defined by ANSI C37.40 as “a fuse
capable of interrupting all currents from the maximum
rated interrupting current down to the rated minimum
interrupting current.” The minimum rated interrupting
current is the lowest current that the fuse will be able
to clear properly. This creates a need to place a low
current interrupting device in series with the back-up
rated fuse.
Catalog Symbol: ECL083
Description: E-Rated medium voltage, current-limiting fuses
for transformer and feeder protection.
Ratings
Volts: 8.3kV
Amps: 65-350
IR: 50kA
Agency Information: E-Rated Medium Voltage Fuses: Meets
E requirements per ANSI C37.46, and General Purpose
requirements per ANSI C37.40
Construction:
• Silver element in a double concentric helical configuration
• Silica filler
• Silver-plated copper terminals and endcaps
• Filament wound, glass epoxy fuse tube
0112 BU-SB12075 Page 1 of 4 Data Sheet 9008
