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Instruction Leaflet 

Installation    Instructions  For EG-DC  Circuit     Breaker

and Molded Case Switch

EATON  CORPORATION www.eaton.com

Figure 3. Load Isolated from Power Source. Grounded or 

Ungrounded Systems. If System Voltage Exceeds 300 Vdc, then 

Ungrounded Systems Only. 

Figure 4. Load Connected to Power Source. Grounded or 

Ungrounded Systems. 

Figure 5. Load Isolated from Power Source. Grounded or 

Ungrounded Systems. If System Voltage Exceeds 125 Vdc, then 

Ungrounded Systems Only. 

Power

Load

Power

Load

Breaker

Breaker

3 Pole

3 Pole

         

Load Isolated from Power Source.

Grounded or Ungrounded Systems.

If System Voltage Exceeds 300 Vdc.

Then Ungrounded Systems Only.

Fig. 5-2

Breaker

Load

Power

Breaker

Load

Power

2 Pole

2 Pole

         

Load Connected to Power Source.

Grounded or Ungrounded Systems.

Fig. 5-3

Breaker

Power

Load

2 Pole

Fig. 5-4

2. Installation

The installation procedure consists of inspecting the circuit  

breaker and, as applicable, installing  accessories, interphase 

barriers and terminals, mounting the circuit breaker, connecting the 

line and load conductors, torquing terminals, and attaching terminal 

shields. Circuit breakers, accessories,mounting hardware, 

and unmounted terminals may be supplied in separate 

packages. To install the circuit breaker, perform the following steps.
If required, internal accessory installation in any type of circuit 

breaker should be done before the circuit breaker is mounted and 

2-1. Make sure that the circuit breaker is suitable for the 

intended installation by comparing name-plate data with existing 

ratings and system requirements. Inspect the circuit breaker for 

completeness,and check for damage before mounting. 

 

2-2. Remove installed cover screws and cover.

 CAUTION

WHEN REMOVED AND REINSTALLED, THREAD-FORMING SCREWS  WILL 

TRY TO REFORM THE THREADS IN THE BASE . CARE SHOULD  BE TAKEN 

EVERY TIME A THREAD-FORMING SCREW IS USED TO ENSURE THE 

SCREW STARTS  IN THE ORIGINAL THREADS. DAMAGED THREADS CAN 

RESULT IN IMPROPER CIRCUIT BREAKER  COVER RETENTION.

 IL01202013E

H01

Summary of Contents for EG-DC Series

Page 1: ...EG DC Circuit Breaker and Molded Case Switch H02 Effective June 2011 E125H DC 68C 3719 H03 Industrial Circuit Breaker E125H DC Interrupting Capacity PUSH TO TRIP NEMA Ratings kA 42 50 65 Poles In Seri...

Page 2: ...T 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...

Page 3: ...breaker and as applicable installing accessories interphase barriers and terminals mounting the circuit breaker connecting the line and load conductors torquing terminals and attaching terminal shiel...

Page 4: ...D HARDWARE WHEN SPECIAL HARDWARE IS NEEDED FOR EXAMPLE WITH THE ELECTRICAL OPERATOR THE INSTRUCTION LEAFLET DESCRIBI NG THE ACCESSORY ALSO DESCRIBES THE SPECIAL MOU NTING ARRANGEMENTS 2 6 To mount the...

Page 5: ...he circuit breaker handles and the PUSH TO TRIP button in the trip unit The circuit breaker handle has three positions two of which are shown on the cover with raised lettering to indicate ON and OFF...

Page 6: ...ntamination is found look for the source and eliminate the problem 4 2 Switch circuit breaker to ON and OFF several times to be sure that the mechanical linkages are free and do not bind If mechanical...

Page 7: ...7 Instruction Leaflet IL01202013EH01 Installation Instructions For EG DC Circuit Breaker and Molded Case Switch EATON CORPORATION www eaton com Notes Effective June 2011...

Page 8: ...s required you should consult an authorized Eaton sales representative The sale of the product shown in this literature is subject to the terms and conditions outlined in appropriate Eaton selling pol...

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