V12-T18-2 Volume 12—Aftermarket, Renewal Parts and Life Extension Solutions CA08100014E—October 2016 www.eaton.com
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18
Medium Voltage Fuses
Current-Limiting and Expulsion Fuses
Current-Limiting and
Expulsion Fuses
Originally a
Westinghouse Product
Medium Voltage Fuses
Product Description
Eaton medium
voltage
fuses offer such a range of
characteristics that almost
any fuse application, within
the practical range of such
interrupting devices, may
be satisfied. This range of
characteristics is offered
in part by the production of
both expulsion and current-
limiting power fuses.
Expulsion and current-limiting
fuses provide such diverse
characteristics by employing
different areas of fuse
technology. These differences
in technology, along with the
diverse characteristics, require
that different questions be
answered when applying
expulsion and current-
limiting fuses.
Product History
The Eaton power fuse product
line was introduced in the
1930s by Westinghouse
Electric Corporation. As power
systems grew in size, the need
to sectionalize utility feeders
and to protect equipment
became apparent. The initial
fuse development efforts
resulted in the creation of
non-current-limiting, expulsion
type fuses. As the available
fault currents grew, the need
for a current-limiting fuse was
apparent and this resulted in
new interruption techniques.
While basic fuse technology
has not changed greatly
over the years, gradual
improvements have been
made to make the fuses
more current-limiting and
easier to manufacture and
install. Because standards
for fuses (ANSI C37) detail
only test methods and basic
performance requirements,
many different varieties of
fuses (length, diameter, short-
circuit interruption curves)
have been introduced over
the years.
Eaton presently manufactures
medium voltage fuses in
Haina, DR.
Product History Time Line
General Information
Fuses in Perspective
Advantages
Medium Voltage Fuse Comparison
Notes
1
BAL superseded by CLE.
2
BAL-R superseded by CLS.
3
BA—Refills and holders only, new installations use RBA.
4
DBA—Refills only.
5
DBS—Superseded by DBU.
BAL
햲
BAL-R
햳
CLE
CLS
CLPT
CLT
CX/CXN
HLE
BA
햴
DBA
햵
RBA
RDB
DBS
햶
DBU
V12-T18-4
V12-T18-4
V12-T18-4
V12-T18-4
V12-T18-4
V12-T18-4
V12-T18-5
V12-T18-5
V12-T18-5
Product 1935 1940 1945 1950 1955 1960 1965 1970 1975 1980 1985 1990 2000 PresentPage
Medium
Voltage
Current
Limiting
Expulsion
Backup
General
Purpose
Cutouts
& Others
Boric
Acid
Distrbution
Power
Power
C R E T
Voltage
Type
Class
Application
Amp Rating
Distrbution
K E
Expulsion Current-Limiting
Vented Sealed
Electromechanical Static
Expels gases/noise No gases/noise
Interrupts at natural current zero Limits fault current
Generally higher voltage/current applications Generally higher interrupting ratings
Differences in time/current characteristics Differences in time/current characteristics
