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MAGNUM PRODUCT GUIDE CA013002EN—April 2017 www.eaton.com24
Magnum DS - Product specific information
MDSX circuit breaker
The Magnum MDSX is a current limiting circuit breaker of the
Magnum DS Family. It has a 200 kA interrupting rating without
the need for current limiters at 480 Vac with continuous current
ratings up to 5000A. MDSX circuit breakers utilize fast opening
contacts, and are available in both drawout and fixed mounting
configurations.
Current limiting performance of the MDSX family of current
limiting circuit breakers is shown in above. The label on the
breaker indicates its current-limiting characteristics. The MDSX
provides all the same operational features normally associated
with Magnum DS.
Non-automatic breaker (switch)
The non-automatic Magnum DS breaker (switch) shares the
same frame and accessories as the circuit breaker. It does not,
however, have the following:
•
Trip Unit
•
Sensors
•
Overcurrent Release
The switch is available in both three-pole and four-pole fixed and
drawout configurations.
A non-automatic power circuit breaker includes separable
contacts for movement between a closed position and an open
position, and an operating mechanism for moving the separable
contacts between the two positions. This breaker can be applied
where a local means of disconnect or isolation is required. It can
be operated either manually or electrically. It should be noted,
since the Magnum Non-Automatic Breaker (switch) does not
include any overcurrent protection, it cannot be used in branch or
feeder circuit protection applications.
MDE circuit breaker
The Magnum DS Family includes the MDE High Endurance
Circuit Breaker. The MDE circuit breaker is rated for 15,000
Open-Close operating cycles between scheduled maintenance
periods. It is a specially designed and manufactured Magnum DS
Circuit Breaker intended for especially robust applications that
require a higher than normal number of operating cycles without
maintenance. Contact Eaton for additional details.
Special customer requests
The 25th digit in the catalog number configurator now offers
several special customer designs, for very specific environments
or applications. Please click here or search 'Volume 4 Tab 3' on
www.eaton.com
Trip curve charts
Type Magnum DSL limiters, peak let-through current
characteristics
Available current, rms symmetrical amperes x 10
Peak instantaneous let-through current kilo – amperes x 10
100
90
80
70
60
50
40
30
20
10
9
8
7
6
5
4
3
2
1
.9
.8
.7
.6
.5
.4
.3
.2
.1
.09
.08
.07
.06
.05
.04
.03
.02
100
200
300
400
500
600
700
800
900
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
20000
30000
40000
50000
60000
70000
80000
90000
100000
MD3000
MD2500
MD2000
MD1600
MD1200
MA800
MA600
MA400
MA300
MA250
Type Magnum DSL limiters average melting time-current
characteristics
Time in seconds
900
800
700
600
500
400
300
200
60
50
40
30
20
10
9
8
7
6
5
4
3
2
1
.9
.8
.7
.6
.5
.4
.3
.2
.1
.09
.08
.07
.06
.05
.04
.03
.02
.01
Scale x 100 = Current in amperes
1
2
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
100
200
300
400
500
600
700
800
900
1000
2000
3000
4000
5000
6000
7000
8000
9000
MA250
MA300
MA400
MA500
MA800
MB1200
MB1600
MB2000
MB2500
MB3000
ote:N For time/current curves, see www.eaton.com/tcc
Courtesy of NationalSwitchgear.com
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