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5 – Field Replacement of Load Circuit Breakers
PPENDIX
Instructions for field installation of load circuit breaker. To be performed by qualified
electrical personnel only.
1. Remove the AC input and turn both battery breakers off. (If the unit is still powered on
a live bus will be exposed creating a possible shock hazard).
2. Remove the top of the unit (there will be 1 screw in each corner and two screws
located in the front center of the unit).
3. Remove the bottom circuit breaker toggle guard.
4. The output terminal block wires are labeled according to their position, locate the wire
corresponding to the breaker position you are installing and connect it to the bottom
contact of the circuit breaker.
5. Attach any hot wire from the bus to the top contact of the circuit breaker.
6. Insert a screw into the hole exposed by removing the bottom toggle guard and screw
the breaker in place.
7. Re-install the toggle guard and top of the unit and reapply power.
Note: It is normal to measure output voltage on a Centurion III load circuit breaker
when its toggle handle is in the OFF position. The Centurion III circuit breaker alarm
circuit produces a very low current, high impedance signal that can be detected using
a high impedance digital multi-meter (DMM). This is normal and does not present a
hazard to the user.
Newmar • 1580 Sunflower Ave, Suite 100, Costa Mesa, CA 92626
Phone: 714-751-0488 • E-mail: techservice@Newmarpower.com
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