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82
Medium Voltage Fuses
AB, AM and
CAV
Specifications
Description: British Standard VT fuses with low current
ratings for use in voltage transformers or operating
transformers to provide isolation of the associated system in
the event of faults in the transformer circuit.
Dimensions: See Basic Catalog Numbers table.
Basic Catalog Numbers for “AB” & “AM” Series
Basic Cat. Dimensions - in (mm)
Numbers Volts Amp Ratings Type Length Diameter IR
ABWNA 3.6kV 3.15, 6.3 AB 5.6 (142.2) 1 (25.4) 50KA
ABCNA 3.6kV 3.15, 6.3, 10 AB 7.69 (195.3) 1 (25.4) 50KA
ABWNA* 5.5kV 0.5, 1, 2, 3, 5 AB 5.6 (142.2) 1 (25.4) 50KA
AMWNA* 5.5kV 0.5, 1.0, 2.0, 3.0, 4.0, 5.0 AM 5.6 (142.2) 0.81 (20.6) 50KA
ABWNA 7.2kV 3.15, 6.3 AB 5.6 (142.2) 1 (25.4) 45KA
ABCNA 7.2kV 3.15, 6.3 AB 7.69 (195.3) 1 (25.4) 45KA
ABCNA 12.0kV 3.15 AB 7.69 (195.3) 1 (25.4) 45KA
ABFNA 15.5kV 3.15 AB 10.00 (254) 1 (25.4) 32KA
ABGNA 17.5kV 3.15 AB 14.13 (358.9) 1 (25.4) 35KA
ABGNA 24.0kV 3.15 AB 14.13 (358.9) 1 (25.4) 25KA
ABGNA** 36.0kV 3.15 AB 14.13 (358.9) 1 (25.4) 31.5KA
Recommended fuse clip for 1 diameter fuses – A3354705.
Basic Catalog Numbers for “CAV” Series
Basic Cat. Amp Dimensions - in (mm)
Number Volts Ratings Length Diameter IR
CAV 3.6kV 2 8.66 (220) 1.63 (41.4) 50KA
CAV* 5.5kV 15 7.375 (187.3) 1.63 (41.4) 50KA
CAVH* 5.5kV 0.5, 1, 2 7.375 (187.3) 1.63 (41.4) 50KA
CAV 7.2kV 2, 10 8.66 (220) 1.63 (41.4) 40KA
CAV 12kV 2 8.66 (220) 1.63 (41.4) 40KA
CAV* 15.5kV 0.5, 1, 2, 3, 7 12.87 (326.9) 1.63 (41.4) 80KA
CAVH* 15.5kV 0.5, 1, 2 12.87 (326.9) 1.63 (41.4) 80KA
CAV 17.5kV 2, 4, 6, 10 8.66 (220) 1.63 (41.4) 40KA
CAV 24kV 2, 3, 4 13.39 (340.1) 1.63 (41.4) 40KA
CAV 36kV 2, 4 17.32 (439.9) 1.63 (41.4) 40KA
CAVH 36kV 2 17.32 (439.9) 1.63 (41.4) 40KA
CAV* 38kV 4 17.32 (439.9) 1.63 (41.4) 40KA
CAVH* 38kV 0.5, 1, 2 17.32 (439.9) 1.63 (41.4) 40KA
Type CAVH are fitted with a striker pin for indication.
* E-Rated fuses
**For clean indoor applications only.
Potential transformer fuses
Recommended Fuse Clips: 1” dia. - A3354705, 1.63” dia. - 1A0835, .819 dia. - 1A1837
Contact Cooper Bussmann for complete specifications on Potential Transformer Fuses
Ratings:
E-Rated: — See single asterisk in Basic Catalog Numbers
table
Volts: — 3.6-38kV (See Basic Catalog Numbers table)
Amps: — 2-15A (See Basic Catalog Numbers table)
IR: — 25-80kA (See Basic Catalog Numbers table)
Agency Information: BS2692-1 and IEC60282-1
Features and Benefits
• Physically dimensioned for retrofitting in existing hardware.
• Space saving size.
Typical Applications
• Medium Voltage Potential Transformers
• Small Medium Voltage Service Transformers
Catalog Number Build-A-Code
kV Basic Catalog Number Amps
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