Page 16
DPP2U SERIES
OPERATING MANUAL
P O W E R I N G T E C H N O L O G Y
Manual No. DPP2U-MAN Rev. 5
dpp2u-man-rev5-0719.indd
12.0 INSTALLING CIRCUIT BREAKERS
The DPP2U Series employs pluggable circuit breakers that can be easily installed, removed
or replaced using the supplied puller tools. This operation is carried out without the need
to dismount the unit from it’s installation.
Installation, removal or replacement of a circuit breaker and connection or disconnection
of a load circuit should be carried out only by only by qualified technical persons who are
trained in the use of power systems and are well aware of the hazards involved.
Although it may be necessary on some occasions to carry out this operation while power
remains applied to the panel, it is always preferable to switch off the power if possible
before proceeding.
12.1 Removing the cover plate.
To remove the cover plate undo the two knurled retaining
screws at the left and right side of the unit and pull forward.
12.2 Removing a breaker or blanking panel.
To remove a breaker pull the toggle
switch handle using the supplied puller tool until the breaker comes free. To remove
a blanking panel lever it out at the top or bottom using a flat bladed screwdriver.
12.3
Installing a breaker or blank panel.
To insert a breaker carefully push the breaker
firmly into the socket and make sure that it is fully seated. To fit a blanking panel
use the two supplied retaining screws to fit it into position.
Repeat the above procedure from 12.2 to 12.3 for all positions and then replace the
cover plate.
12.4
Conditions for breaker positioning.
For thermal reasons, when operating the panel
continuously at the current ratings stated in note (2) on page 15, the circuit breaker
current shall not exceed the continuous rating as defined in the table.
Adjoining gaps on each side of the circuit breaker must be provided for current
ratings 70A to 200A. None are required for 2.5A to 60A.