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Page 14 MX28B200/400 –48 VDC User’s Manual (990-9133)
3.7. Installation of Circuit Breakers and Fuses
Plug-in Circuit Breaker Installation
CAUTION During circuit breaker installation, carefully align the
breaker alarm terminals with the alarm terminal board to avoid
breaker terminal damage.
1) Remove the circuit breaker cover panel and the plastic cover(s) from the desired
location(s).
2) Install the circuit breaker(s) by snapping the top terminal onto the upper bus bar and
rotating the unit down until the second terminal snaps onto the breaker termination
post as shown in Figure 3.7-1 The breaker alarm terminals are designed to make
contact with the alarm terminal board as the breaker is snapped into place.
3) Reattach the circuit breaker cover panel.
NOTE: Circuit breaker alarm contacts close when the circuit breaker is
tripped but not when it is turned OFF.
Figure 3.7-1. Installation of Circuit Breakers