E-Rated Medium Voltage Fuses: ECL155
For Transformer and Feeder Protection
CL-14
15.5 kV
Form No. ECL155
Page 1 of 4
Data Sheet: 9004
Bussmann
®
CATALOG SYMBOL: ECL155
E-RATED MEDIUM VOLTAGE FUSES:
Meets E requirements per ANSI C37.46
Meets General Purpose requirements per ANSI C37.40
FOR TRANSFORMER AND FEEDER PROTECTION
VOLTAGE RATING: 15.5 KV
INTERRUPTING RATING: See table.
CURRENT LIMITING
CONSTRUCTION:
• Silver element in a double concentric helical configuration
• Silica filler
• Silver plated copper terminals and endcaps
• Filament wound, glass epoxy fuse tube
FEATURES:
• General Purpose Fuses. Bussmann’s medium voltage fuses
provide general purpose protection and are capable of interrupt-
ing fault currents up to 50,000A RMS sym.
• Clip-Lock Double Barrel Fuse Design.
• Indoor and Outdoor Usage. The filament wound, glass epoxy
fuse tube provides UV and moisture protection for the fuse. This
makes Bussmann’s medium voltage fuses suitable for both
indoor and outdoor applications.
• Open Fuse Indication. Indicator travel distance is 16mm.
• Operating Frequency: 50/60 Hz
• Dimensional Data:
ECL155 series , see page 2.
• Performance Curves. see pages 3-4.
Electrical Characteristics
Bussmann Ampere IR # of
Number Rating Voltage Max Sym. Barrels Figure # Style
ECL155-10E 10E 15.5kV 63KA 1 1 Clip-Lock
ECL155-15E 15E 15.5kV 63KA 1 1 Clip-Lock
ECL155-20E 20E 15.5kV 63KA 1 1 Clip-Lock
ECL155-25E 25E 15.5kV 63KA 1 1 Clip-Lock
ECL155-30E 30E 15.5kV 63KA 1 1 Clip-Lock
ECL155-40E 40E 15.5kV 63KA 1 1 Clip-Lock
ECL155-50E 50E 15.5kV 63KA 1 1 Clip-Lock
ECL155-65E 65E 15.5kV 63KA 1 2 Clip-Lock
ECL155-80E 80E 15.5kV 63KA 1 2 Clip-Lock
ECL155-100E 100E 15.5kV 63KA 1 2 Clip-Lock
ECL155-125E 125E 15.5kV 63KA 1 2 Clip-Lock
ECL155-150E 150E 15.5kV 63KA 2 3 Clip-Lock
ECL155-200E 200E 15.5kV 63KA 2 3 Clip-Lock
ECL155-250E 250E 15.5kV 50kA 2 3 Clip-Lock
ECL155-300E 300E 15.5kV 50kA 2 3 Clip-Lock
Part Number Construction
Catalog Symbol Voltage Rating Ampere Rating
Example ECL 155 300E
155 = 15.5 kV
Catalog Number Cross Reference
Ferraz-Shawmut Ferraz-Shawmut
Bussmann New Catalog # Old Catalog #
ECL155-10E A155C1DORO-10E 225-007-967
ECL155-15E A155C1DORO-15E 225-007-968
ECL155-20E A155C1DORO-20E 225-007-969
ECL155-25E A155C1DORO-25E 225-007-970
ECL155-30E A155C1DORO-30E 225-007-971
ECL155-40E A155C1DORO-40E 225-007-972
ECL155-50E A155C1DORO-50E 225-007-973
ECL155-65E A155C1DORO-65E 225-007-974
ECL155-80E A155C1DORO-80E 225-007-975
ECL155-100E A155C1DORO-100E 225-007-976
ECL155-125E A155C2DORO-125E 225-007-977
ECL155-150E A155C3DORO-150E 225-007-978
ECL155-200E A155C3DORO-200E 225-007-979
ECL155-250E A155C3DORO-250E 225-007-980
ECL155-300E A155C3DORO-300E 225-007-981
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 inter-
rupting 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.
3-03-04
SB03153
