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POWERING TECHNOLOGY
Manual No. MS0027-MAN rev. 4
guardian_access_3u_ms27-man-rev4-0817.indd
4.6 DC Load Connection
Before connecting DC load cables, check that the cable rating is matched with selected the
MCB and/or load.
1. Check that all the load MCBs are in the OFF position.
2. Connect the negative (-) cable from the load to the relevant -48 V circuit breakers. Insert
the stripped cable into the opening on top of the terminal and tighten the screw to 3.0 Nm.
3. Connect the positive (+) cable from the load to the relevant positive terminal on the bus
bar. Insert the stripped cable into the opening on top of the terminal and tighten the screw
to 3.0 Nm.
4. The loads connected to the bus bar should be started from the left.
Load 0V
Load -48V
Figure 4-11 DC Load Connection
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