Installation Guide

Schneider Electric USA, Inc.

1601 Mercer Road

Lexington, KY 40511 USA

1-888-778-2733

www.schneider-electric.us

QO™ and Homeline™ Load Centers S1B33894

Instruction Bulletin 07/2012

Electrical equipment should be installed, operated, serviced, and

maintained only by qualified personnel. No responsibility is assumed

by Schneider Electric for any consequences arising out of the use of

this material.

Square D™ and Schneider Electric™ are trademarks or registered

trademarks of Schneider Electric. Other trademarks used herein are

the property of their respective owners.

ENGLISH

Removal

1. Turn OFF (O) the circuit breaker. Remove the wires.

2. To disconnect the plug-on jaw from the connector and mounting rail, lift the plug-on end of the circuit

breaker until the circuit breaker jaw disconnects from the bus bar. Continue lifting until the terminal end

disengages from the mounting rail. See Figure 4, 5 or 6 depending on circuit breaker type.

Installing the Cover / Trim

1. Remove the cover twistouts. Remove the appropriate twistouts to match the number of circuit breakers

being installed. See Figure 8.

2. Attach the Spanish translation label, supplied with the load center, to the inside of the door or cover. See

Figure 9.

3. Identify the circuit breakers on the directory label.

4. For service equipment, apply the “Service Disconnect” label(s) near the disconnect handle(s). If the main

circuit breaker is installed and the device is used as a branch panel, apply the “Main” label to the trim near

the main circuit breaker handle. See Figure 9.

5. Install the trim/cover using the screws provided and torque to 20 lb-in (2.3 N•m).

6. For QO outdoor load centers that are 150–225 A single-phase, main lug devices rated for 22,000 RMS

symmetrical amperes short circuit systems, use four screws by removing the interior trim support bracket

knockout.

7. Fill any unused circuit breaker openings with the filler plates.

Energizing the Load Center

1. Before energizing the load center, turn off the main and all branch circuit breakers.

2. After power is turned on to the load center, first turn on the main circuit breaker and then turn on the branch

circuit breakers.

3. Rotate the door latch counterclockwise to allow engagement through the door slot. (Outdoor only.)

4. Close the door until secured by the latch.

E COVER

Spanish

label

Main or service

disconnect label

(if required)

Cover