For detailed information, visit the Electrical IEC section at www.cooperbussmann.com
85
Medium
Voltage
Fuses
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
BBaassiicc CCaatt.. DDiimmeennssiioonnss -- iinn ((mmmm))
NNuummbbeerrss VVoollttss AAmmpp RRaattiinnggss TTyyppee LLeennggtthh DDiiaammeetteerr IIRR
3.6ABWNA 3.6kV 3.15, 6.3 AB 5.6 (142.2) 1 (25.4) 50KA
3.6ABCNA 3.6kV 3.15, 6.3, 10 AB 7.69 (195.3) 1 (25.4) 50KA
5.5ABWNA* 5.5kV 0.5, 1, 2, 3, 5 AB 5.6 (142.2) 1 (25.4) 50KA
5.5AMWNA* 5.5kV 0.5, 1.0, 2.0, 3.0, 4.0, 5.0 AM 5.6 (142.2) 0.81 (20.6) 50KA
7.2ABWNA 7.2kV 3.15, 6.3 AB 5.6 (142.2) 1 (25.4) 45KA
7.2ABCNA 7.2kV 3.15, 6.3 AB 7.69 (195.3) 1 (25.4) 45KA
12ABCNA 12.0kV 3.15 AB 7.69 (195.3) 1 (25.4) 45KA
15.5ABFNA 15.5kV 3.15 AB 10.00 (254) 1 (25.4) 32KA
17.5ABGNA 17.5kV 3.15 AB 14.13 (358.9) 1 (25.4) 35KA
24ABGNA 24.0kV 3.15 AB 14.13 (358.9) 1 (25.4) 25KA
36ABGNA** 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
BBaassiicc CCaatt.. AAmmpp DDiimmeennssiioonnss -- iinn ((mmmm))
NNuummbbeerr VVoollttss RRaattiinnggss LLeennggtthh DDiiaammeetteerr IIRR
3.6CAV 3.6kV 2 8.66 (220) 1.63 (41.4) 50KA
5.5CAV* 5.5kV 15 7.375 (187.3) 1.63 (41.4) 63KA
5.5CAVH* 5.5kV 0.5, 1, 2 7.375 (187.3) 1.63 (41.4) 63KA
7.2CAV 7.2kV 2, 4, 6, 10 8.66 (220) 1.63 (41.4) 63KA
12CAV 12kV 2 8.66 (220) 1.63 (41.4) 40KA
15.5CAV* 15.5kV 0.5, 1, 2, 3, 5, 7 12.87 (326.9) 1.63 (41.4) 80KA
15.5CAVH* 15.5kV 0.5, 1, 2 12.87 (326.9) 1.63 (41.4) 80KA
17.5CAV 17.5kV 2, 4, 6, 10 8.66 (220) 1.63 (41.4) 40KA
24CAV 24kV 2, 3, 4 13.39 (340.1) 1.63 (41.4) 40KA
36CAV 36kV 2, 4 17.32 (439.9) 1.63 (41.4) 40KA
36CAVH 36kV 2 17.32 (439.9) 1.63 (41.4) 40KA
38CAV* 38kV 4 17.32 (439.9) 1.63 (41.4) 40KA
38CAVH* 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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