Medium Voltage Fuses
E-rated fuses for transformer & feeder protection
Features and Benefits
• Physically dimensioned for retrofitting in existing hardware
• Open fuse indicator for ease in troubleshooting
• Full range ANSI classification
JCX, JCY, JCU, JCZ
and JDZ
Specifications
Description: Indoor/enclosure E-
rated medium voltage, current-limit-
ing fuses for potential & small
power transformers with blown fuse
indication.
Typical Applications
• Medium Voltage Transformer Primary Protection
• Medium Voltage Feeder Circuit Protection
• Medium Voltage Switches
• Medium Voltage Metal-enclosed Switchgear
Dimensions: See Catalog
Numbers table.
Construction: plated ferrules.
Ratings:
Volts: — 2750-8300V (See Catalog Numbers table for
details)
1
Amps: — ⁄
2-750A
IR: — 40-63kA Sym
— 60-100kA ASYM
— See Catalog Numbers table for details
Catalog Numbers
Catalog
Amp
Maximum
Maximum Interrupting Capacity
Dimensions - in (mm)
Numbers
Rating
Design Voltage Construction
Amps (Asym.)
Amps (Sym.)
Length
Diameter
2400V; E-Rated; Indoor/Enclosure
1
JCX- ⁄2E
0.5
1
2
3
5
7
10
15
20
25
2750
2750
2750
2750
2750
2750
2750
2750
2750
2750
2750
2750
2750
2750
2750
2750
2750
2750
2750
2750
2750
2750
2750
2750
2750
Single
Single
Single
Single
Single
Single
Single
Single
Single
Single
Single
Single
Single
Single
Single
Single
Single
Single
Single
Single
Double
Double
Double
Double
Double
60,000
60,000
60,000
60,000
60,000
60,000
60,000
80,000
80,000
80,000
80,000
80,000
80,000
80,000
80,000
80,000
80,000
80,000
80,000
80,000
80,000
80,000
80,000
80,000
80,000
40,000
40,000
40,000
40,000
40,000
40,000
40,000
50,000
50,000
50,000
50,000
50,000
50,000
50,000
50,000
40,000
50,000
50,000
50,000
50,000
50,000
50,000
50,000
50,000
50,000
9.19 (233.38)
9.19 (233.38)
9.19 (233.38)
9.19 (233.38)
9.19 (233.38)
9.19 (233.38)
9.19 (233.38)
9.5 (241.3)
2 (50.8)
2 (50.8)
2 (50.8)
2 (50.8)
2 (50.8)
2 (50.8)
2 (50.8)
2.1 (53.34)
2.1 (53.34)
2.1 (53.34)
3 (76.2)
3 (76.2)
3 (76.2)
3 (76.2)
3 (76.2)
3 (76.2)
3 (76.2)
3 (76.2)
3 (76.2)
3 (76.2)
3 (76.2)
3 (76.2)
3 (76.2)
3 (76.2)
3 (76.2)
JCX-1E
JCX-2E
JCX-3E
JCX-5E
JCX-7E
JCX-10E
JCX-15E
JCX-20E
JCX-25E
JCX-30E
JCX-40E
JCX-50E
JCX-65E
JCX-80E
JCX-100E
JCX-125E
JCX-150E
JCX-200E
JCX-225E
JCX-250E/280X
JCX-300E/325X
JCX-350X
JCX-400X
JCX-450X
9.5 (241.3)
9.5 (241.3)
30
40
50
65
10.81 (276.35)
10.81 (276.35)
10.81 (276.35)
10.81 (276.35)
10.81 (276.35)
10.81 (276.35)
10.81 (276.35)
10.81 (276.35)
10.81 (276.35)
10.81 (276.35)
10.81 (276.35)
10.81 (276.35)
10.81 (276.35)
10.81 (276.35)
10.81 (276.35)
80
100
125
150
200
225
250/280
300/325
350
400
450
5500V; E-Rated; Indoor/Enclosure
1
JCY- ⁄2E
0.5
1
2
3
5
7
10
15
20
25
5500
5500
5500
5500
5500
5500
5500
5500
5500
5500
Single
Single
Single
Single
Single
Single
Single
Single
Single
Single
60,000
60,000
60,000
60,000
60,000
60,000
60,000
60,000
60,000
60,000
40,000
40,000
40,000
40,000
40,000
40,000
40,000
40,000
40,000
40,000
11.19 (284.18)
11.19 (284.18)
11.19 (284.18)
11.19 (284.18)
11.19 (284.18)
11.19 (284.18)
11.19 (284.18)
11.19 (284.18)
11.19 (284.18)
11.19 (284.18)
2 (50.8)
2 (50.8)
2 (50.8)
2 (50.8)
2 (50.8)
2 (50.8)
2 (50.8)
2 (50.8)
2 (50.8)
2 (50.8)
JCY-1E
JCY-2E
JCY-3E
JCY-5E
JCY-7E
JCY-10E
JCY-15E
JCY-20E
JCY-25E
Contact Cooper Bussmann for the latest product information on E-Rated Fuses for Transformer and feeder protection.
Recommended Fuse Clips: 39 - 1A0065, 9078A67G04, A3354730
For product Data Sheets, visit www.cooperbussmann.com/products/datasheet.asp
75