Instruction Bulletin HRB73152

Safety Warnings

Hazard of Electric Shock, Explosion or Arc Flash

DANGER:

• Always use appropriate personal protective equipment (PPE) and follow safe electrical work practices (refer to NFPA 70E or CSA Z462).
• This equipment must only be installed and serviced by qualified electrical personnel.
• Turn off all power supplying this equipment before working on or inside it.
• Always use a properly rated voltage sensing device to confirm power is off.
• Replace all devices, doors, and covers before turning on power.
• Ensure wiring to the load center or panelboard is correct. The dual-function circuit breaker must switch the ungrounded (HOT) conductor for ground-fault and arc-fault protection. Incoming line must connect to the load center bus.

Failure to follow these instructions will result in death or serious injury.

Hazard of Equipment Damage

NOTICE:

• Megger, high-voltage, or hi-pot tests will damage the circuit breaker. Turn off all power and isolate the breaker before testing.

Failure to follow this instruction can result in equipment damage.

Important Notes

• This product meets the requirements for Class A ground-fault circuit protection.
• The pigtail version is for use in NQ panelboards and QO™ load centers (excluding QO2, QO2-4, QO3-5). QO6-12 and QO8-16 versions require #3 AWG (25 mm²) max. line conductors.
• This arc-fault and ground-fault detection device is not designed for circuits with shared neutral conductors; it may trip unintentionally.
• QO plug-on neutral dual function breakers are only for use in plug-on neutral load centers.

To Minimize Nuisance Tripping:

• Do not connect to swimming pool equipment installed before the 1965 National Electrical Code.
• Do not connect to electric ranges or clothes dryers whose frames are grounded by connection to a neutral conductor.
• Do not connect to more than 250 ft. (76 m) of load conductor for the total one-way run.

Installation

Refer to Figure 1 for component identification and connection points.

Steps:

1. Turn off all power supplying the equipment before working on or inside it.
2. Turn off the circuit breaker (A).
3. Remove the panel trim.
4. If using a plug-on neutral DF (QO1XXPDF), proceed to step 5.
5. Connect the panel neutral (pigtail wire B, for pigtail version only) to the load center or panelboard neutral bar. Observe torque values specified by the load center or panelboard manufacturer.
6. Strip insulation off wires to the specified length (C).
7. Connect the load power (D) and load neutral (E). Refer to Figure 1 or the side of the circuit breaker for torque values.
8. Note: The load neutral wire (E) and panel neutral (pigtail wire B) must be connected correctly for proper arc-fault and ground-fault detection. For plug-on neutral DF breakers, the neutral connector must be mounted on the load center neutral rail. See Figure 1A.
9. Install the circuit breaker into the panel and re-torque wire connectors. For bolt-on breakers, tighten screw (F).
10. Note: If using plug-on neutral DF, the breaker must be mounted to the load center neutral bar. See Figure 1A.
11. Re-install the panel trim and attach the supplied label (G) so it is visible with the cover or trim installed.
12. Note: When using QO Neutral kits (QONK1, 2, 3, or 4) in a QO enclosure, do not install AFCI, CAFCI, GFCI, EPD/EPE, or QO150-QO200 breakers in adjacent spaces, as the neutral kits may interfere with their installation.

Figure 1 Description: Illustrates the circuit breaker components labeled A through G, connection points for load power (D) and load neutral (E), the pigtail wire (B), and the screw (F) for securing the breaker. It also shows torque specifications for wire connections and the breaker itself.

Figure 1A Description: Shows the correct mounting of a plug-on neutral circuit breaker onto the load center neutral bar.

Testing

Refer to Figure 2 for testing illustration.

Procedure:

1. Test the circuit breaker after installation following the procedure below. Test monthly thereafter using the Building Occupant's Test Reminder card.
2. Turn off all loads downstream of the circuit breaker.
3. Turn on power to the load center or panelboard.
4. Turn the circuit breaker handle (A) to the ON position.
5. Press the test button (B). The circuit breaker should trip and the handle will move to the tripped or center position (C) if operating correctly. If it does not trip, refer to the Troubleshooting section.
6. Reset the circuit breaker by moving the handle fully to the OFF position and then to the ON position.
7. Turn loads downstream of the circuit breaker back on.

DF Fault Indication Procedure:

The DF circuit breaker provides continuous fault protection. If a fault occurs during the indication procedure, the breaker will interrupt it.

1. Place the circuit breaker in the OFF (O/OFF) position.
2. Firmly press and hold the purple "TEST" button (B) through Step 4.
3. Move the handle to the ON (I/ON) position.
4. The circuit breaker should trip within specific timeframes indicating fault type:
   • Trips Instantly (less than 1 second): Indicates a Ground Fault (e.g., arcing to ground, shared neutral, grounded neutral, or ground fault).
   • Trips at 2.0 seconds: Indicates an Arc Fault (e.g., parallel arc fault, series arc fault).
   • Trips at 5.0 seconds: Indicates Procedure Complete (no fault detected, or thermal overload/short circuit).

To Reset Fault Indication:

• Perform the DF Fault Indication Procedure a total of 6 times.
• Verify by performing the DF Fault Indication Procedure and achieving a "Procedure Complete" result (trip at 5.0 seconds).

An automatic reset of Fault Indication occurs if the breaker is powered continuously for 27 days.

Figure 2 Description: Shows the circuit breaker handle (A), the test button (B), and the tripped position indicator (C). It also outlines the fault indication procedure and expected trip times for different fault types.

For additional troubleshooting information, visit www.schneider-electric.com or call 1-888-SquareD (1-888-778-2733).

Removal

Steps:

1. Turn the circuit breaker OFF (O/OFF). Remove the wires.
2. To disconnect the plug-on jaw from the connector and mounting rail, lift the line-end (1) of the breaker until the jaw disconnects from the bus bar. Continue lifting until the load-end (2) disengages from the mounting rail. See Figure 3A.
3. If the circuit breaker is not being replaced, install a QOFP filler plate (not provided) to fill the opening in the load center or panelboard trim.
4. Note: Do not use a twisting motion to remove the circuit breaker, as this may cause equipment damage. See Figure 3B.

Figure 3A/3B Description: Illustrates the removal process, showing how to lift the line-end (1) and load-end (2) of the breaker to detach it from the panel.

Federal Communications Commission (FCC) Statement

This circuit breaker has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This circuit breaker generates, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this circuit breaker does cause harmful interference to radio or television reception, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the circuit breaker and receiver.
• Connect the receiver into an outlet on a circuit different from that to which the circuit breaker is connected.
• Consult the dealer or an experienced radio/TV technician for help.

Do not make changes or modifications to the device which are not expressly approved by Square D. Any changes or modifications may result in the loss of authority to operate the equipment.