Circuit Breaker Replacement - ADC PowerWorx Select Series User Manual

7.5

Circuit Breaker Replacement

Any existing circuit breaker may be field-replaced with an identical circuit breaker or with a
breaker that has a different current rating or time delay. However, a breaker with a higher
current rating may only be used as a replacement if the total current draw of the affected bus
will not exceed 100 Amps. A circuit breaker mounting position that does not have an existing
breaker (blank) cannot be used for installation of a replacement breaker. Use the following
procedure to replace an existing circuit breaker with a new breaker:
Note: Previous versions of the Select Series Circuit Breaker Panel were not equipped with
field-replaceable circuit breakers. If the panel does not have slots above the circuit
breakers as shown in
this procedure does not apply.
1. Turn-off or disconnect the power from the power bus (either A or B) that supplies current
to the circuit breaker to be replaced.
Danger: During normal operation, the terminal connections on the circuit breakers are
electrically energized. Failure to disconnect the power from the power bus that supplies current
to the circuit breaker being replaced may cause severe personal injury to the installer and/or
equipment damage.
2. Insert a flat-bladed screwdriver into the slot above the circuit breaker as shown in
Figure
3. Push down and forward on the upper circuit breaker lock tab until the top of the circuit
breaker is released from the panel.
4. Hold the top edge of the circuit breaker to keep the circuit breaker from snapping back into
the panel when the screwdriver is withdrawn from the slot.
5. Insert a flat-bladed screwdriver into the slot below the circuit breaker.
6. Push down and forward on the lower circuit breaker lock tab until the bottom of the circuit
breaker is released from the panel.
7. Pull the circuit breaker forward and out of the panel to expose the wiring connections on
the rear side of the circuit breaker.
Figure 18, then it does not have field-replacable circuit breakers and
18.
ADCP-80-531 • Issue 4 •July 2004
Page 29
© 2006, ADC Telecommunications, Inc.