Technical Data 10350
Effective December 2015
Supersedes April 2015
BUSSMANN
SERIES
2.75kV E-Rated
Medium voltage fuses for feeder circuit, switchgear and transformer
protection
Features and benefits:
•
Bussmann
®
series current-limiting E-Rated
medium voltage fuses are defined by their
melting time-current characteristic that
permit their electrical interchangeability with
other fuses of the same E Rating.
E-Rated fuses must have a defined current
response time specified by ANSI C37.46.
E-Rated fuse of 100 amps and below must
melt in 300 seconds at an RMS current
within the range of 200% to 240% of the
fuse’s nameplate current rating. E-Rated
fuses greater than 100 amps must melt
in 600 seconds at an RMS current within
the range of 220% to 264% of the fuse’s
nameplate current rating.
E-Rated fuses are physically dimensioned for
easy installation in existing hardware.
Current-limiting fuses provide positive
interruption even on low fault currents.
The fuse limits the magnitude of
electromechanical stresses in the protected
apparatus.
Open fuse indicator easily integrates
into automation schemes and speeds
troubleshooting by providing a positive
visual indication of fuse operation.
50/60Hz operating frequency for worldwide
application.
Mountings are available in disconnect and
non-disconnect versions with porcelain or
glass polyester insulators.
Live parts and end fittings available.
•
•
•
Description:
•
E-Rated, current-limiting, medium voltage
fuses for feeder circuit, switchgear and
transformer protection.
•
•
•
•
Typical applications:
•
Medium voltage transformer primary
protection
Medium voltage feeder circuit protection
Medium voltage switches
Medium voltage metal-enclosed switchgear
•
•
•
Technical Data 10350
Effective December 2015
2.75kV E-Rated medium voltage fuses for
feeder circuit, switchgear and transformer protection
Dimensions (see catalog number tables for values)
2.75kV E-Rated medium voltage ferrule fuses
Catalog symbols:
•
•
C
B
2CLE-_E
JCX-_E
Volts
•
Ratings:
•
2.75kV
10 to 450A
•
Amps
•
•
Interrupting ratings
•
50kA RMS Sym (2CLE-_E)
•
3.31
(84.1)
B
A
40kA RMS Sym (JCX-_E)
Agency information:
•
E-Rated fuses meet the performance characteristics of
ANSI C37.46
Recommended fuse holders:
CLE
Catalog number
Fuse
mounting
type*
Non-
disconnect
Disconnect
†
Non-
disconnect
Disconnect
†
Non-
disconnect
Disconnect
†
Approximate dimensions - in (mm)
Voltage
BIL (kV)
Diameter
A
Clip center
B
Length
C
CLE
15E–25E
Single barrel
10E–225E
Single barrel
250E–300E
350X-450X
Double bar-
rel
60
60
60
60
60
60
3 (76)
7 (178)
10.9 (277)
3 (76)
7 (178)
10.9 (277)
2 (51)
8.1 (206)
9.5 (241)
2CLE-PNM-C
2CLE-PDM-C
2CLE-PNM-D
2CLE-PDM-D
2CLE-PNM-E
2CLE-PDM-E
2CLE-GNM-C
2CLE-GDM-C
2CLE-GNM-D
2CLE-GDM-D
2CLE-GNM-E
5CLE-GDM-E
CLE-NL-C
CLE-DL-C
CLE-NL-D
CLE-DL-D
CLE-NL-E
CLE-DL-E
—
CLE-DF-C
—
CLE-DF-D
—
CLE-DF-E
Mounting
(including live parts, end fittings)**
Porcelain
insulator
Glass-polyester
insulator
Live parts
(including end
fittings)
End fittings
(disconnect
only)
Amp rating
* See page 9 for illustrations and dimensions.
** End fittings supplied only when required.
† Disconnect mountings provide a means for fuse extraction only. Do not use a disconnect mounting for load switching or fuse removal while energized.
Recommended fuseclips:
Fuse
diameter -
in (mm)
2 (51)
3 (76)
3 (76)
3 (76)
Clip dimensions - in (mm)
Figure
1
1
2
3
A
B
3.75 (95) 1.98 (50)
4.14 (105) 2.45 (62)
Catalog
C
D
E
F
G
number
2.01 (51) 1.19 (30) 4.54 (115) 1.51 (38) 0.4 (10) A3354710*
3.01 (76) 1.19 (30) 5.64 (143) 1.51 (38) 0.4 (10) A3354730*
See dimensions drawing
1A0065
See dimensions drawing
9078A67G04
Description
Enclosed fuseclip
Enclosed fuseclip
Open fuseclip
Spring loaded open fuse-
clip
*For single barrel applications only. Not sold in pairs.
Figure 1
Figure 2
Figure 3
C
A
B
D
G
F
E
2
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