Schneider Electric QO24L60NRNM Enclosed Circuit Breaker Instructions

QO24L60NRNM
Enclosed Circuit Breaker
Instructions

QO24L60NRNM Enclosed Circuit Breaker

Instruction Bulletin Non-Metallic Enclosure for QO™ Circuit Breaker / Load Center / Molded Case Switch
Retain for future use.

Safety Information

This bulletin contains instructions for the installation and operation of QO Circuit Breaker Non-Metallic Enclosure / Load Center NonMetallic Enclosure / Molded Case Switch NonMetallic Enclosure. It also includes installation instructions for a standard circuit breaker or molded case switch. See separate instruction bulletins included with advanced function circuit breakers / molded case switches and accessories, when installed.
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

• Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, NOM-029STPS or CSA Z462 or local equivalent.
• This equipment must only be installed and serviced by qualified electrical personnel.
• Turn off all power supplying this equipment before working on or inside equipment.
• Always use a properly rated voltage sensing device to confirm power is off.
• Replace all devices, doors and covers before turning on power to this equipment.
• Do not allow petroleum-based paints, solvents, or sprays to contact the nonmetallic parts of this product.
• Before starting a wiring installation or addition, consult a local building or electrical inspector for current National Electrical Code requirements. Local codes vary but are adopted and enforced to promote safe electrical installations. A permit may be needed to do electrical work, and some codes may require an inspection of the electrical work.
• This equipment may not be suitable for use in corrosive environments present in agricultural buildings. See NEC 547.

Failure to follow these instructions will result in death or serious injury.
WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to: www.P65Warnings.ca.gov.

Preparation

1. Determine the wiring or conduit requirements for circuit(s), as required by local electrical codes.
2. Select the proper cable clamp or other approved methods for securing the cable or conduit to the enclosure.
3. Remove the appropriate knockouts required for installation of cable clamps or conduit (Table 1). To remove the knockouts, see Figure 1.

Knock Out Sizes for Conduits
Conduit

• 1/2 in. / pulg
• 3/4 in. / pulg
• 1 in. / pulg

Figure 1: Removing Knockout Enclosure Mounting
Surface Mounting

1. Secure the enclosure to the wall with appropriate fasteners.
2. Temporarily position the enclosure with thecentered tear drop hole.
3. Secure the enclosure to the wall using the bottom mounting hole.

Figure 2: Mounting Holes

Line Terminals Wiring

1. Pull the conductors into the enclosure. Use approved wire clamps, conduit bushings, or other approved methods to secure the conductor to the enclosure and prevent damage to the conductor insulation.
2. Connect the wires.
   a. Install the phase and neutral wires according to the wiring diagram on the equipment.
   b. Connect the service ground, equipment grounding wire, or both as required by the local electrical code.
   c. Torque each connection to the value specified on one of the labels attached to the enclosure.

Circuit Breaker / Molded Case Switch Installation
DANGER
HAZARD OF PERSONAL INJURY OR EQUIPMENT DAMAGE

• This equipment is designed and tested by Schneider Electric™ to performance levels which meet Underwriter’s Laboratories (UL) standards.
• Use only Square D™ brand circuit breakers/molded case switches and accessories.

Failure to follow these instructions will result in death or serious injury.
NOTE: See separate instruction bulletins included with advanced function circuit breakers / molded case switches and accessories for their installation. Refer to wiring diagram and danger label attached for acceptable circuit breakers / molded case switches.
Circuit Breakers – Installation (Load Centers)

1. Determine the wiring or conduit requirements for the circuit.

2. Turn OFF (O) the circuit breaker.

3. Install the wire terminal end of the circuit breaker onto the mounting rail.

4. Rotate the circuit breaker inward until the plug-on jaw fully engages the bus bar connector. Keep the bottom of the circuit breaker’s case against the mounting rail.
   Check the terminal end of the circuit breaker for engagement to the mounting rail.

5. Remove the wire insulation from the branch wire as indicated in the wiring diagram. Install the branch wire into the load terminal of the branch circuit breaker.

6. Torque each branch circuit breaker connection to the value specified on the circuit breaker.

7. Torque each neutral and ground connection to the value specified on the load center wiring diagram attached to the enclosure.

Figure 3: QO Standard Circuit Breaker Filler Plates (Load Centers)

1. Remove filler plate only when a circuit breaker will be installed.
2. Close unused single pole circuit openingwith filler plate QOFP.

Figure 4: Filler Plate Location Circuit Breaker Removal

1. Turn OFF (O) the circuit breaker / molded case switch. Remove the wires.
2. To disconnect the plug-on jaw from the connector, lift and rotate the plug-on end of the circuit breaker / molded case switch until the jaw disconnects from the bus connector.
3. Continue rotating until the terminal end disengages from the mounting rail. See Figure 3.

Energizing the Equipment

1. Re-install the trim/cover using the screws provided.

2. Before energizing, turn off the device or devices inside the enclosure.

3. After power is turned ON (I) to the equipment:
   a. Load Center: first turn ON (I) the main circuit breaker (if installed) and then turn ON (I) the branch circuit breakers.
   b. Circuit Breaker Enclosure: turn ON (I) the circuit breaker.
   c. Molded Case Switch Enclosure: turn ON (I) the molded case switch.

4. Close the door until secured by the latch.

Electrical equipment must 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.
Schneider Electric and Square D are trademarks and the property of Schneider Electric SE, its subsidiaries, and affiliated companies. All other trademarks are the property of their respective owners.

Schneider Electric USA, Inc.
800 Federal Street
Andover, MA 01810 USA
888-778-2733
www.se.com/us
© 2022 Schneider Electric All Rights Reserved

References

• P65Warnings.ca.gov
• p65warnings.ca.gov/
• Schneider Electric Canada | Global Specialist in Energy Management and Automation
• Schneider Electric Mexico | Servicios de Renovación y Retrofit de Schneider Electric
• Schneider Electric USA | Global Specialist in Energy Management and Automation

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