2
Instruction Leafl et
IL01202013EH01
Installation Instructions For EG-DC Circuit Breaker
and Molded Case Switch
EATON CORPORATION www.eaton.com
1. Introduction
General Information
In this document, the term circuit breaker includes molded case
switches. The E-frame Series G circuit breaker type ED-DC (Fig. 1)
is rated 500 Vdc maximum and from 25A to 100A continuous
current. (Refer to Table 1 for all available trip unit ratings.)
The circuit breaker is listed in accordance with Underwriters
Laboratories, Inc. Standard UL489. The type EG-DC circuit
breaker is for use in grounded and ungrounded applications
where multiple poles are connected in series (Figures 2-5)
A 3-pole breaker may be wired as a 2-pole with rated
voltage and interruption based on the number of poles wired
Table 1. Available Current Ratings.
Circuit Breaker Types
Current Ratings
EG-DC
25
30
35
40
45
50
60
70
80
Figure 2. Load Connected to Power Source. Grounded or
Ungrounded Systems.
Power
Load
Power
Load
Breaker
Breaker
3 Pole
3 Pole
Load Connected to Power Source.
Grounded or Ungrounded Systems.
Fig. 5-1
WARNING
DO NOT ATTEMPT TO INSTALL OR PERFORM MAINTENANCE ON EQUIP-
MENT WHILE IT IS ENERGIZED. DEATH, SEVERE PERSONAL INJURY OR
SUBSTANTIAL PROPERTY DAMAGE CAN RESULT FROM CONTACT WITH
ENERGIZED EQUIPMENT. ALWAYS VERIFY THAT NO VOLTAGE IS PRESENT
BEFORE PROCEEDING WITH THE TASK, AND ALWAYS FOLLOW GENERALLY
ACCEPTED SAFETY PROCEDURES.
EATON IS NOT LIABLE FOR THE MISAPPLICATION OR MISINSTALLATION
OF ITS PRODUCTS.
The user is cautioned to observe all recommendations, warnings, and
cautions relating to the safety of personnel and equipment as well
as all general and local health and safety laws, codes, and proce-
dures.
Figure 1. Type EG-DC Series C DC Circuit Breaker
The recommendations and information contained herein are based
on Eaton experience and judgement, but should not be considered
to be all-inclusive or covering every application or circumstance
which may arise. If any questions arise, contact Eaton for further
information or instructions.
Fixed Thermal
90
100
E125H-DC
68C
3719 H03
Industrial Circuit Breaker
E125H-DC Interrupting Capacity
PUSH TO TRIP
NEMA
Ratings
kA
42
50
65
Poles
In
Series
1
2
3
V
∂
125
250
500
IEC 60947-2
› kA
42
42
fi kA
42
42
Poles
In
Series
1
2
Uimp 6 kV Category A
⁄
V
∂
125
250
Non-standard Interrupting Capacity
2 Poles In Series
300 V
∂
50 kA
in series. This instruction leaflet (IL) gives procedures for
installation and field testing of the types EG-DC Series G
DC circuit breaker.
