How To Guide

© 2005 Schneider Electric USA All Rights Reserved
40271-891-03 QO
®
Outdoor Load Centers
03/2005 Instruction Bulletin
3
ENGLISH
BRANCH CIRCUIT BREAKERS
Installation
1. Determine the wiring or conduit requirements for the branch circuit breaker.
2. Turn OFF (O) the circuit breaker.
3. Install the wire terminal end of the circuit breaker to the mounting rail and push inward until the
plug-on jaw fully engages the bus bar connector. Check the terminal end of the circuit breaker for
engagement to the mounting rail.
4. Remove the insulation from the conductor as required. Install the conductor into the load terminal
of the circuit breaker.
5. Torque each circuit breaker terminal to the value specified on the circuit breaker.
6. Torque each neutral and ground terminal to the value specified on the load center box label
attached to the inside of the box.
Removal
1. Turn OFF(O) the circuit breaker. Remove the
conductors.
2. Lift the plug-on end of the circuit breaker until the
circuit breaker jaw disconnects from the bus bar.
Continue to lift up until the terminal end
disengages from the mounting rail. See Figure 5.
INSTALLING THE TRIM
1. Remove the cover twistouts. See Figure 6.
a. Remove only enough twistouts to match the number of
circuit breakers being installed.
b. Twist out with pliers at the center of the twistout.
c. Close all unused open spaces in the cover using filler
plates, as listed on the cover directory label.
2. Attach the French translation label, supplied with the load center,
to the inside of the door. See Figure 7.
WARNING
HAZARD OF PERSONAL INJURY OR EQUIPMENT DAMAGE
Use only Square D
®
circuit breakers and accessories.
Failure to follow this instruction can result in injury or equipment damage.
11003005
Plug-on
jaw
Bus bar
connector
Mounting rail
Wire terminal end
Figure 5: QO Branch Circuit Breaker
11003009
Interior
trim
support
bracket
knockout
Figure 6: Twistout Removal