molded case circuit breakers - Eaton Canada

PRODUCT DESCRIPTION
March 2001
DS Switchgear Assembly
Typical Asheville Design, 1991
REPLACEMENT CAPABILITIES
View Showing Controls on the Panel – DS416
DSL416 Breaker – Side View
SWITCHGEAR (LOW VOLTAGE)
DS Assemblies, Power Circuit Breakers
and Renewal Parts
Westinghouse DS switchgear with type
DS (non-limiting) and type DSL (with limiters)
low voltage air power circuit breakers
was introduced in 1969. There have been
many product design changes, as well as,
plant movements that have necessitated
product improvements. Overall, the product
has remained the standard for low
voltage switchgear in the industry.
Typical DS switchgear is constructed in
accordance with ANSI C37.20.1 standards
for low voltage, metal-enclosed drawout
switchgear. As such, it contains low voltage
power circuit breakers, type DS or DSL, as
the principal overcurrent protective devices
both as main and as feeder protection.
The drawout feature of DS breakers facilitates
testing and maintenance important
in many applications.
Compartmentalization of the drawout
breakers is part of the standard construction.
DS and DSL circuit breakers are
designed to ANSI standards C37.13, C37.16
and C37.17 in frame sizes ranging from
800A to 5000A. Type DS switchgear is
designed in accordance with ANSI standard
C37.20.1, C37.51 and UL Standard 1558.
Cutler-Hammer offers an extensive
amount of products to support DS Switchgear.
New DS Air Circuit Breakers
New DS circuit breakers are available for
replacement or to fill existing vacant cells.
All breakers are newly manufactured and
are mechanically and electrically the same
as the breakers as originally specified and
supplied.
DS Circuit Breaker Provisions
Breaker provisions are required in switchgear
when there is an existing space in a
structure that is to be filled with a breaker.
Provisions are available for all ratings and
include all parts required to complete the
cell in accordance with the switchgear as
originally supplied.
Factory Modification and Repair
Factory modifications and repairs are
available for new or customer owned DS
circuit breakers. This UL approved service
includes trip unit replacements, conversion
from manually operated to electrically
operated, breaker calibrations and the
addition of numerous accessories for the
DS and DSL circuit breaker.
Ratings
DS Switchgear Bus 800 – 6000A
DS/DSL Breaker 15 – 5000A
Voltage 120 – 600V
Interrupting Capacity 30 – 200kA
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Chronology
There have been five vintages of DS
switchgear since the original design was
manufactured in 1969. Today, many capabilities
still exist to support the different
vintages of DS Switchgear.
DS Breaker Parts
An extensive inventory of newly manufactured
renewal parts for DS and DSL power
circuit breakers are available. Refer to
RPD33-790-lH for an in-depth listing of
renewal parts.
DS Switchgear Structure Parts
DS switchgear parts are available for most
DS designs. Newly manufactured replacement
parts (such as doors, breaker provisions,
lift trucks, metering, etc.) are
available. Contact your local Cutler-Hammer
Distributor for availability.
Digitrip Trip Unit Retrofit Kits
Trip unit retrofit kits are available for all
DB Breaker frames. Refer to pages 256-
257 of this publication.
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