Square D Company QO-B120 Guide d'installation

www.se.com

NQ/NQM Panelboards and QONQ Load

Centers

Class 1640

Instruction Bulletin

80043-712-06, Rev. 07

02/2023

Legal Information

The Schneider Electric brand and any trademarks of Schneider Electric SE and its

subsidiaries referred to in this guide are the property of Schneider Electric SE or its

subsidiaries. All other brands may be trademarks of their respective owners.

This guide and its content are protected under applicable copyright laws and furnished

for informational use only. No part of this guide may be reproduced or transmitted in

any form or by any means (electronic, mechanical, photocopying, recording, or

otherwise), for any purpose, without the prior written permission of Schneider Electric.

Schneider Electric does not grant any right or license for commercial use of the guide

or its content, except for a non-exclusive and personal license to consult it on an "as is"

basis. Schneider Electric products and equipment should be installed, operated,

serviced, and maintained only by qualified personnel.

As standards, specifications, and designs change from time to time, information

contained in this guide may be subject to change without notice.

To the extent permitted by applicable law, no responsibility or liability is assumed by

Schneider Electric and its subsidiaries for any errors or omissions in the informational

content of this material or consequences arising out of or resulting from the use of the

information contained herein.

Class 1640

Table of Contents

Safety Information ............................................................................................5

Please Note.....................................................................................................5

Introduction........................................................................................................6

Safety Precautions ...........................................................................................6

Installation .........................................................................................................7

Interior Mounting for Square D Brand Enclosures ...............................................7

Surface Mounting (Enclosure Mounted on Wall)............................................7

Flush Mounting (Enclosure Recessed in Wall) ..............................................8

Neutral Bonding Strap/Cable Installation............................................................9

100 or 250 A Maximum NQ Panelboards....................................................10

400 or 600 A Maximum NQ Panelboards and QONQ Load Centers.............. 11

QO and QOB Circuit Breaker Installation and Removal .....................................13

QO and QOB Circuit Breaker Installation....................................................13

QO and QOB Circuit Breaker Removal.......................................................14

Circuit Breaker Reset Instructions....................................................................15

Deadfront Preparation ....................................................................................16

Appendix 1: Specifications............................................................................18

Typical Wiring ................................................................................................18

Integral Main or Sub-Feed: DJ, FI, KI, H, J, LA, LC, LH, QB, QD, QG, QJ,

QO(B)VH.................................................................................................19

Panelboard Ratings........................................................................................23

CE Marking....................................................................................................32

QO2150VH, QO2175VH and QO2200VH Restrictions ...................................... 33

Appendix 2: Accessory Kits ..........................................................................35

Equipment Ground Bar Kits.............................................................................35

Oversized Neutral Lug Kits for 100–600 A Panelboards ....................................35

Sub-Feed Lug Kits for 100–400 A Panelboards ................................................36

Main Lug Kits.................................................................................................36

Line Side Barrier and Neutral Bonding Strap Kits ..............................................37

80043-712-06 3

Safety Information Class 1640

Safety Information

Read these instructions carefully and look at the equipment to become familiar with

the device before trying to install, operate, service, or maintain it. The following special

messages may appear throughout this user guide or on the equipment to warn of

hazards or to call attention to information that clarifies or simplifies a procedure.

The addition of either symbol to a “Danger” or “Warning” safety

label indicates that an electrical hazard exists which will result

in personal injury if the instructions are not followed.

This is the safety alert symbol. It is used to alert you to personal

injury hazards. Obey all safety messages that follow this

symbol to avoid possible injury or death.

DANGER

DANGER indicates a hazardous situation which, if not avoided, will result in

death or serious injury.

WARNING

WARNING indicates a hazardous situation which, if not avoided, could result

in death or serious injury.

CAUTION

CAUTION indicates a hazardous situation which, if not avoided, could result

in minor or moderate injury.

NOTICE

NOTICE is used to address practices not related to physical injury.

NOTE: Provides additional information to clarify or simplify a procedure.

Please Note

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.

A qualified person is one who has skills and knowledge related to the construction,

installation, and operation of electrical equipment and has received safety training to

recognize and avoid the hazards involved.

Electrical equipment should be transported, stored, installed, and operated only in the

environment for which it is designed.

80043-712-06 5

Class 1640 Introduction

Introduction

This bulletin contains instructions for installing Square D™ brand NQ circuit breaker

panelboards and QONQ load centers. These panelboards and load centers are

Underwriters Laboratories (cULus) listed and accept QO™ and QOB branch circuit

breakers.

NOTE: For technical support on the installation of this panelboard, contact the

Schneider Electric Customer Information Center at 1-888-778-2733.

NOTE: See the labels on the equipment for rating and safety information.

Additional equipment labels are provided with this document.

Safety Precautions

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-029-STPS 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.

• Locking the manual operation or locking the motor cover does not disconnect

the secondary motor circuit.

• Always use a properly rated voltage sensing device to confirm power is off.

• Read and understand this entire instruction bulletin and the included NEMA PB

1.1 standards publication before installing, operating, or maintaining this

equipment.

• 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.

• 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.

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

WARNING: This product can expose you to chemicals including Nickel compounds, which are

known to the State of California to cause cancer, and Bisphenol A (BPA), which is known to the

State of California to cause birth defects or other reproductive harm. For more information go to

www.P65Warnings.ca.gov.

6 80043-712-06

Installation Class 1640

Installation

This section provides instructions for the following NQ panelboard and QONQ load

center procedures:

•Interior Mounting for Square D Brand Enclosures, page 7.

•Neutral Bonding Strap/Cable Installation, page 9.

•QO and QOB Circuit Breaker Installation and Removal, page 13.

•Circuit Breaker Reset Instructions, page 15.

•Deadfront Preparation, page 16.

Interior Mounting for Square D Brand Enclosures

A separate standards publication, titled “General Instructions for Proper Installation,

Operation, and Maintenance of Panelboards Rated 600 Volts or Less” (NEMA PB1.1),

has been provided with this equipment. Familiarize yourself with the content of this

document before proceeding with any of the following procedures.

If you did not receive a copy of this document, or if you have any questions regarding

this equipment, contact your local distributor or Schneider Electric representative.

NOTICE

HAZARD OF EQUIPMENT DAMAGE DUE TO LOOSE CONNECTIONS

• Ensure all connections are properly tightened.

• Refer to the torque information label provided on the panelboard before

tightening the connections.

Failure to follow these instructions can result in equipment damage.

To properly mount and install the NQ panelboard or QONQ load center interior, please

refer to the NEMA PB 1.1 standards publication, and follow the instructions below for

either Surface Mounting (Enclosure Mounted on Wall), page 7 or Flush Mounting

(Enclosure Recessed in Wall), page 8.

Surface Mounting (Enclosure Mounted on Wall)

1. Mount the enclosure as instructed in the NEMA PB 1.1 standards publication.

2. Remove the deadfront from the deadfront brackets.

3. Install the interior as described below:

a. Set the interior on the enclosure studs. An elevating screw is not required

(See Interior Mounting for Square D Brand Enclosures, page 7).

b. Tighten the Keps nuts against the interior side rails until the rails are against

the back of the enclosure.

4. Based on the application and adopted installation code, Neutral Bonding Strap

and Line Side Barrier may be required. See the Neutral Bonding Strap/Cable

Installation, page 9 and Appendix 2: Accessory Kits, page 35.

5. Apply equipment labels (located in the bag assembly) as directed by the

instructions on the back of the equipment label sheet. Please consult local codes

and standards.

80043-712-06 7

Class 1640 Installation

6. Remount the deadfront after wiring.

Flush Mounting (Enclosure Recessed in Wall)

1. Mount the enclosure as instructed in the NEMA PB 1.1 standards publication.

2. Remove the deadfront from the deadfront brackets.

3. Install the interior as described below:

a. Thread the (4) 10-32 x 0.875 in. self-tapping, elevating screws provided with

the flush trim into the side rails.

b. Set the interior on the enclosure studs (see Interior Mounting of Square D

Brand Enclosures, page 9). Place the keps nuts onto the enclosure studs,

but do not tighten.

c. Adjust the screws so that the lip of the deadfront is approximately 0.25

inches (6.35 mm) from the wall line.

d. Tighten the keps nuts against the side rails.

4. Based on the application and adopted installation code, Neutral Bonding Strap

and Line Side Barrier may be required. Please consult local codes and standards.

See the Neutral Bonding Strap/Cable Installation, page 9 and Appendix 2:

Accessory Kits, page 35.

5. Apply equipment labels (located in the bag assembly) as directed by the

instructions on the back of the equipment label sheet.

6. Remount the deadfront after wiring.

8 80043-712-06

Installation Class 1640

Figure 1 - Interior Mounting of Square D Brand Enclosures

Deadfront Bracket

Enclosure Stud

Keps Nut

Enclosure

Deadfront

Wall

Elevating Screw

Side Rail

0.25 in.

(6.35 mm)

Neutral Bonding Strap/Cable Installation

Based on the application and the adopted installation code, a line side barrier and

neutral bonding strap may be required.

To properly bond the neutral to the panelboard, follow the instructions for either 100 or

250 A Maximum NQ Panelboards, or 400 or 600 A Maximum NQ Panelboards and

QONQ Load Centers, page 11.

80043-712-06 9

Class 1640 Installation

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-029-STPS or CSA Z462 or local

equivalent.

• Turn off all power supplying this equipment before working on or inside

equipment.

• Locking the manual operation or locking the motor cover does not disconnect

the secondary motor circuit.

• The neutral bonding strap/cable should be used only when the panelboard is

installed as service entrance equipment.

• Do not mix the mounting screws with the deadfront screws.

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

NOTE: Refer to Line Side Barrier and Neutral Bonding Strap Kits, page 38 for

information.

NOTE: The terms “neutral bonding strap” and “neutral bonding cable”, describe

the components which meet the requirements for a “neutral bonding conductor”.

These are equivalent terms.

100 or 250 A Maximum NQ Panelboards

To install a neutral bonding strap on NQ panelboards with mains rated up to 225 A

(with main lugs or main circuit breaker), or up to 250 A with a factory assembled main

circuit breaker, refer to Bonding Strap Installation—100 or 250 A Maximum NQ

Panelboards, page 11, and follow the instructions below.

1. Align the bonding strap on the side rail, as pictured.

NOTE: For some applications, it may be necessary to remove the lug (not

pictured) before installing the bonding strap.

2. Insert the two mounting screws, as pictured. Tighten the 10-32 screw to 10–12

lb.-in. (1.1–1.4 N•m) and the 1/4-20 to 25–30 lb.-in. (2.8–3.4 N•m).

NOTE: Lug mounting screws are provided in the bonding strap bag assembly.

a. If the lug was removed in step 1 above, reinstall it on top of the bonding

strap.

b. Use 1/4-20 x 9/16 in. screw in mounting for 100/225 A interiors with no

options. Refer to note C and D for other options.

c. Use the 1/4-20 screw x 11/16 in. lug mounting screw on applications with

feed-through lug, sub-feed lug, sub-feed circuit breaker, or 200% neutral

applications.

d. Use the 1/4-20 x 7/8 in. lug mounting screw on applications with 200%

neutrals and with feed-through lugs, sub-feed lugs, or sub-feed circuit

breakers.

10 80043-712-06

Installation Class 1640

Figure 2 - Bonding Strap Installation—100 or 250 A Maximum NQ Panelboards

NOTE: For bonding strap lug options, refer to C and D for the correct length of the 1/4-20 screw.

Mounting Screws

Bonding Strap

1/4-20 x 9/16 in.

10/32 x 7/16 in.

Neutral Bus

Side Rail

400 or 600 A Maximum NQ Panelboards and QONQ Load Centers

To install a neutral bonding cable on a 400 or 600 A maximum NQ panelboard and

QONQ load center, refer to Bonding Cable Installation — 400 or 600 A Maximum NQ

Panelboards and QONQ Load Centers, page 12, and follow the instructions below.

1. Align the lug on the side rail mounting hole, as pictured.

2. Tighten the lug mounting screw against the side rail to 10–12 lb.-in. (1.1–1.4

N•m).

3. Align the bonding cable, as pictured, and insert it into the lug and neutral

mounting holes.

4. Tighten both the lug wire binding screw and the neutral wire binding screw to 45–

50 lb.-in. (5.1–5.6 N•m).

80043-712-06 11

Class 1640 Installation

Figure 3 - Bonding Cable Installation — 400 or 600 A Maximum NQ Panelboards and QONQ Load Centers

Neutral

Lug Mounting

Screw

Bonding Cable

Bonding Cable Mounting Hole

Side Rail

Lug

Side Rail

Mounting Hole

Neutral Wire

Binding Screw

Lug

Wire

Binding

Screw

Bonding Cable Mounting Hole

12 80043-712-06

Installation Class 1640

QO and QOB Circuit Breaker Installation and Removal

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-029-STPS 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.

• Locking the manual operation or locking the motor cover does not disconnect

the secondary motor circuit.

• Always use a properly rated voltage sensing device to confirm power is off.

• All unused spaces must be filled with filler plates.

• Replace all devices, doors, and covers before turning on power to this

equipment.

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

WARNING

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 and Mexican

Official Standards (NOM) listing.

• Use only Square D™brand circuit breakers and accessories.

Failure to follow these instructions can result in death, serious injury, or

equipment damage.

QO and QOB Circuit Breaker Installation

Refer to QO and QOB Circuit Breaker Installation and Removal, page 15, for the

following instructions:

1. Turn OFF all power to the panelboard.

2. Turn the circuit breaker OFF.

3. Remove the deadfront.

4. Snap the wire terminal end of the circuit breaker onto the mounting rail.

5. Engage the branch connector.

For QO Circuit Breakers: Push inward until the plug-on jaws fully engage the

branch connector.

For QOB Circuit Breakers: Push inward until the circuit breaker connector is

centered on the branch connector mounting hole. Engage the screw into the

branch connector hole and tighten it to the torque values shown on the interior

wiring and torque diagram.

6. Install the load wire.

7. Reinstall the deadfront.

8. Install a filler plate in all branch circuit breaker spaces not used.

80043-712-06 13

Class 1640 Installation

QO and QOB Circuit Breaker Removal

Refer to QO and QOB Circuit Breaker Installation and Removal, page 15, for the

following instructions:

1. Turn OFF all power to the panelboard.

2. Remove the deadfront.

3. Remove the load wire.

4. Disengage the branch connector.

For QO Circuit Breakers:

Pull outward until the plug-on jaws fully disengage the branch connector.

For QOB Circuit Breakers:

Loosen the screw in the circuit breaker connector and pull the circuit breaker off

of the branch connector.

5. Snap the wire terminal end of the circuit breaker off of the mounting rail.

6. Reinstall the deadfront.

7. Install a filler plate in all branch circuit breaker spaces not used.

14 80043-712-06

Installation Class 1640

Figure 4 - QO and QOB Circuit Breaker Installation and Removal

QO

QOB

Plug-On Jaw

Branch Connector

Bolt-On

Connector

Screw

Rail

Wire

Terminal

Wire

Terminal

Rail

Circuit Breaker Reset Instructions

If the circuit breaker is tripped, the handle will be at the mid-position between ON and

OFF. To reset the circuit breaker, push the handle to the OFF position, then to the ON

position.

80043-712-06 15

Class 1640 Installation

Figure 5 - Circuit Breaker Handle Positions

ONOFFTripped

Handle

Visi-Trip™ Indicator

NOTE: When the circuit breaker has tripped, the handle assumes a center

position and the red Visi-Trip indicator appears in a window in the circuit breaker

case. The red Visi-Trip indicator is only visible when the circuit breaker has

tripped.

Deadfront Preparation

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-029-STPS or CSA Z462 or local

equivalent.

• Before energizing the panelboard, all unused spaces must be filled with filler

plates.

• Replace all devices, doors, and covers before turning on power to this

equipment.

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

16 80043-712-06

Installation Class 1640

Figure 6 - Deadfront Diagram

Filler plates

Deadfront

NOTE: The back of the deadfront lists the catalog number for the corresponding

compatible filler plates.

80043-712-06 17

Class 1640 Appendix 1: Specifications

Appendix 1: Specifications

Typical Wiring

Table 1 - Panelboard Typical Wiring1

Voltage AC 1-Phase Panelboards 1-Phase Panelboards

Phase Wires Phase Wires

208Y/120 — — 3 4

120/240 1 3 — —

24021 2 3 4

24031 3 — —

240/1204— — 3 4 Delta

18 80043-712-06

1. Additional information is provided on the panelboard. See the main circuit breaker rating, if used.

2. For this system, the neutral is not used and only circuit breakers rated 240 Vac minimum should be used. Do not use circuit breakers rated

120 V or 120/240 Vac.

3. For a grounded “B” phase system, only circuit breakers rated 240 Vac minimum should be used. Do not use circuit breakers rated 120 V or

120/240 Vac.

4. When wiring for a delta system, phases “A” and “C” must be 120 V to neutral, phase “B” 208 V to neutral. Connect only circuit breakers rated

240 Vac minimum. Do not use circuit breakers rated 120 V or 120/240 V to “B” phase.

Appendix 1: Specifications Class 1640

Integral Main or Sub-Feed: DJ, FI, KI, H, J, LA, LC, LH, QB, QD, QG,

QJ, QO(B)VH

Figure 7 - NQ/NQM 100–225 A Main Lugs or 100–250 A Main Circuit Breaker Diagram

Backfed Main

Circuit Breaker

(must be bolt-on, if used)

Integral Main

Circuit Breaker

(when installed)

Isolated Ground

(when installed)

Enclosure Bonding

(when required)

Ground

Line

(when required)

Neutral

80043-712-06 19

Class 1640 Appendix 1: Specifications

Figure 8 - NQ Panelboard or QONQ Load Center 400–600 A Main Lugs or Main Circuit Breaker with or

without Feed-Through Lugs Diagram

Load

Feed-Through Lugs

(when installed)

Integral Main

Circuit Breaker

(when installed)

Enclosure Bonding

(when required) Neutral

Ground

(when required)

20 80043-712-06

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