Access Power Solutions Installation and Operation Guide (APS6-300/500 and APS12-300 Series)
60
Copyright © 2007-2013 Eaton Corporation. All Rights Reserved.
IPN 997-00012-49G May 2013
Replacing or Adding a Load MCB
Step 1 - Remove covers
1
Remove the top cover, if fitted.
2
Remove the DC Distribution front cover.
Step 2 - Remove existing MCB (if required)
1
Disconnect the load cable and the fuse fail detect wire from the MCB top
terminal. Insulate the ends of both the cable and the wire.
2
Undo the bottom MCB terminal.
3
Unclip the MCB from the DIN rail and remove the MCB.
Step 3 - Fit new MCB
The APS can use either Chint or Schneider circuit breakers. However, Chint
and Schneider circuit breakers are not interchangeable. When replacing
existing circuit breakers or fitting new ones, use the type that is already in
use (see Spare Parts on page
1
Undo the bottom MCB terminal.
2
Insert the new MCB onto the tooth-comb bus and clip onto the DIN rail.
3
Tighten the bottom MCB terminal.
Step 4 - Fit a fuse fail detect wire
1
Place a spare fuse fail detect wire into the top terminal of the MCB.
2
Tighten the top MCB terminal.
Step 5 - Connect load cable (if required)
Follow the procedure on page
, ensuring that the load cable size is
sufficient for the MCB (see details on page
Step 6 - Replace covers
1
Replace the top cover, if fitted.
2
Replace the DC Distribution front cover.
Procedure complete
