3
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
