cooper bussmann

ECL155 CL-14 15.5kV E-Rated Medium Voltage Fuses

E-rated medium voltage, current-limiting fuses for transformer and feeder protection.
Filament wound, glass epoxy fuse tube, with silica filler, and silver-plated copper terminals and endcaps containing a silver element in a double concentric helical configuration.
Volts: 15.5kV
Amps: 10-300A
IR: 63kA Sym. (10-200A); 50kA Sym. (250-300A)
Agency Information:
Meets E requirements per ANSI C37.46, Meets General Purpose requirements per ANSI C37.40.
Features and Benefits
• Clip-lock double barrel fuse design assures positive installation
• The filament wound, glass epoxy fuse tube provides UV and moisture protection, making these medium voltage fuses suitable for both indoor and outdoor applications
• Open fuse indication (indicator travel distance is 16mm) easily integrates into automation schemes
• 50/60 Hz operating frequency make these fuses applicable world-wide
Typical Applications
• 15.0kV Transformer Primary Protection
• 15.0kV Feeder Circuit Protection
• 15.0kV Voltage Switches
• 15.0kV Metal-enclosed Switchgear

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 elting 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.

Electrical Characteristics
Voltage IR
Max Sym.
# of
Figure # Style
ECL155-10E 10E 15.5kV 63KA 1 1 Clip-Lock
ECL155-15E 15E
ECL155-20E 20E
ECL155-25E 25E
ECL155-30E 30E
ECL155-40E 40E
ECL155-50E 50E
ECL155-65E 65E 2
ECL155-80E 80E
ECL155-100E 100E
ECL155-125E 125E
ECL155-150E 150E 2 3
ECL155-200E 200E
ECL155-250E 250E 50kA
ECL155-300E 300E

Part Number Construction
  Catalog Symbol Voltage Rating Ampere Rating
Example ECL 155 300E
  155 = 15.5 kV

Catalog Number Cross Reference
Bussmann Ferraz-Shawmut
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

Time-Current Characteristics - Minimum Melt

Time-Current Characteristics - Total Clear

Max. Peak Let-Through Current Curves

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