Bussmann® E-Rated Medium Voltage Fuses: For Transformer and Feeder Protection 5.5 kV Electrical Characteristics Bussmann Number Ampere Rating Voltage IR Max Sym. # of Barrels Figure # Style ECL055-10E ECL055-15E ECL055-20E ECL055-25E ECL055-30E ECL055-40E ECL055-50E ECL055-65E ECL055-80E ECL055-100E ECL055-125E ECL055-150E ECL055-200E ECL055-250E ECL055-300E ECL055-400E ECL055-450E ECL055-500E ECL055-600E EBI055-750E EBI055-900E 10E 15E 20E 25E 30E 40E 50E 65E 80E 100E 125E 150E 200E 250E 300E 400E 450E 500E 600E 750E 900E 5.5kV 5.5kV 5.5kV 5.5kV 5.5kV 5.5kV 5.5kV 5.5kV 5.5kV 5.5kV 5.5kV 5.5kV 5.5kV 5.5kV 5.5kV 5.5kV 5.5kV 5.5kV 5.5kV 5.5kV 5.5kV 63kA 63kA 63kA 63kA 63kA 63kA 63kA 63kA 63kA 63kA 63kA 63kA 63kA 63kA 63kA 63kA 63kA 63kA 63kA 63kA 63kA 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 3 3 1 1 1 1 1 1 1 1 1 1 1 1 2 2 3 3 3 3 3 4 4 Clip-Lock Clip-Lock Clip-Lock Clip-Lock Clip-Lock Clip-Lock Clip-Lock Clip-Lock Clip-Lock Clip-Lock Clip-Lock Clip-Lock Clip-Lock Clip-Lock Clip-Lock Clip-Lock Clip-Lock Clip-Lock Clip-Lock Bolt-In Bolt-In EBI055 & ECL055 Bolt-In & CL-14 CATALOG SYMBOL: ECL055 & EBI055 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: 5.5 KV INTERRUPTING RATING: 63KA Maximum Sym. 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 interrupting fault currents up to 63,000A RMS sym. • Clip-lock and bolt-in style available in double and triple barrel fuse designs. • 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: see pages 2-3. • Performance Curves. see pages 4-7. Part Number Construction Example Catalog Symbol ECL Voltage Rating 055 Ampere Rating 500E 055 = 5.5 kV Catalog Number Cross Reference Bussmann ECL055-10E ECL055-15E ECL055-20E ECL055-25E ECL055-30E ECL055-40E ECL055-50E ECL055-65E ECL055-80E ECL055-100E ECL055-125E ECL055-150E ECL055-200E ECL055-250E ECL055-300E ECL055-400E ECL055-450E ECL055-500E ECL055-600E EBI055-750E EBI055-900E 3-03-04 Ferraz-Shawmut New Catalog # A055C1DORO-10E A055C1DORO-15E A055C1DORO-20E A055C1DORO-25E A055C1DORO-30E A055C1DORO-40E A055C1DORO-50E A055C1DORO-65E A055C1DORO-80E A055C1DORO-100E A055C1DORO-125E A055C1DORO-150E A055C1DORO-200E A055C1DORO-250E A055C1DORO-300E A055C1DORO-400E A055C2DORO-450E A055C2DORO-500E A055C2DORO-600E AO55B3DORO-750E AO55B3DORO-900E SB01488 Ferraz-Shawmut Old Catalog # 225-007-937 225-007-938 225-007-939 225-007-940 225-007-941 225-007-942 225-007-943 225-007-944 225-007-945 225-007-946 225-007-947 225-007-948 225-007-949 225-007-950 225-007-951 225-007-952 225-007-953 225-007-954 225-007-955 A055X750E-4 A055X900E-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. Form No. ECL055 Page 1 of 7 Data Sheet: 9002 Bussmann® E-Rated Medium Voltage Fuses: For Transformer and Feeder Protection 5.5 kV - ECL055 Series EBI055 & ECL055 Bolt-In & CL-14 Figure 1 Figure 2 3-03-04 SB01488 Form No. ECL055 Page 2 of 7 Data Sheet: 9002 Bussmann® E-Rated Medium Voltage Fuses: For Transformer and Feeder Protection 5.5 kV - ECL055 Series EBI055 & ECL055 Bolt-In & CL-14 Figure 3 Figure 4 3-03-04 SB01488 Form No.ECL055 Page 3 of 7 Data Sheet: 9002 Bussmann® E-Rated Medium Voltage Fuses: EBI055 & ECL055 Bolt-In & CL-14 For Transformer and Feeder Protection 5.5 kV - Time-Current & Peak Let-Through Data Time-Current Characteristics - Minimum Melt Time-Current Characteristics - Total Clear Max. Peak Let-Through Current Curves 3-03-04 SB01488 Form No.ECL055 Page 4 of 7 Data Sheet: 9002 Bussmann® E-Rated Medium Voltage Fuses: EBI055 & ECL055 Bolt-In & CL-14 For Transformer and Feeder Protection 5.5 kV - Time-Current & Peak Let-Through Data Time-Current Characteristics - Minimum Melt 3-03-04 SB01488 Time-Current Characteristics - Total Clear Form No.ECL055 Page 5 of 7 Data Sheet: 9002 Bussmann® E-Rated Medium Voltage Fuses: EBI055 & ECL055 Bolt-In & CL-14 For Transformer and Feeder Protection 5.5 kV - Time-Current & Peak Let-Through Data Time-Current Characteristics - Minimum Melt Time-Current Characteristics - Total Clear Max. Peak Let-Through Current Curves 3-03-04 SB01488 Form No.ECL055 Page 6 of 7 Data Sheet: 9002 Bussmann® E-Rated Medium Voltage Fuses: EBI055 & ECL055 Bolt-In & CL-14 For Transformer and Feeder Protection 5.5 kV - Time-Current & Peak Let-Through Data Time-Current Characteristics - Minimum Melt Time-Current Characteristics - Total Clear Max. Peak Let-Through Current Curves 3-03-04 SB01488 Form No.ECL055 Page 7 of 7 Data Sheet: 9002