Specification

ManualsBrandsSquare D ManualsElectricalHomeline 50 Amp Two-Pole Circuit Breaker

Circuit Breaker Load Centers—Class 1130

QO Single-Phase Labels

QO SINGLE-PHASE LABELS

The labels below represent typical labels. Information may not be applicable or may change without notice. See the actual label in

the load center for the latest information.

QO Single-Phase Box Label Sample

QO Single-Phase Wiring Diagram Sample

Short circuit ratings.

Short circuit ratings and additional of

replacement circuit breakers.

LISTED

Electric

Cabinet Box

Issue No. V-2813

LOAD CENTER

See Panelboard interior for Catalog No.

Box Cat. No. / Caja No. de Catalogo:

BX18C

Use Cover Cat. No. /

Utilice la Cubierta No. de Catalogo:

QOC16US or/or QOC16UF

Mains 125A max.

Lina principal de 125A maximo.

See main or service disconnect

rating if installed.

240 V ~ Max. 1Ø, 50 / 60 Hz.

24 circuit max. / 24 circuitos maximo.

Type 1 Enclosure

Gabinete Tipo 1

For installation, rep

airs or alterations,

Call an electrical contractor or electrician.

Panel

Rating

Remote

Main

Integral

Main

Branch (min.)/

Cat. prefix

*65,000 ---- Lugs 65,000 / QH

*42,000 ---- Lugs 42,000 / QOH

*22,000 ---- Lugs 22,000 / OQ.VH

*10,000 ---- Lugs 10,000 / OO, QOT & Q1

**5,000 ---- Lugs 5,000 / QO...H (2 pole)

100,000 --100-200A,300V T FuseLugs 10,000 / QO & QOT

42,0000 QOH Lugs 10,000 / QO & QOT

22,000 Q2...H, KD, QO...VH Lugs 10,000 / QO & QOT

65,000 KG Lugs 10,000 / QO & QOT

22,000 ---- QOM...VH 10,000 / QO, QOT & Q1

** 240 v ~ 3Ph. 3W. Grounded B” phase requires 240 V ~ branch

breakers.

* The rating is equal to the lowest interrupting rating of any circuit breaker

installed. Refer to branch breaker for individual ratings. Additional or

replacement branch circuit breakers, main breaker, or service disconnect

MUST have an interrupting r

ating equal to or greater than that of the

circuit breaker with the lowest interrupting rating presently installed.

See panelboard interior for breaker types.

LUG TORQUE DATA

See circuit breakers and field installed

units for wire binding screw torque

Branch Neutral and Equipment Ground Bar

Equipment Ground Combinations

Wire Range (AWG/kcmil) Torque (in/lbs.)

Line Neutral

Lug

4 - 2/0 CU/AL 50

Main Lug 6 - 2/0 CU/AL 50

Alternate

Main Breaker

See Main

Breaker

See Main

Breaker

Wire Range (AWG)

To r que (in./lbs.) Bar with 1

Bar with 2 screw sizesscrew size

1/0 - 3 CU / AL Large 50 Small  

4 CU / AL Large 45 Small  35

6 CU / AL Large 45 Small 25 35

8 CU / AL Large 40 Small 10 25

10-14 CU, 10-12 AL La

rge 35 Small 10 20

Two 14 or 12 CU, Two 12 AL 3510 25

Two 10 AL 35 25

SHORT CIRCUIT RATING

RMS Symmetrical Amperes at 120 / 240 V ~ Maximum

Underwriter’s

Laboratories, Inc.®

Number of circuits maximum.

Enclosure catalog number.

Catalog number of covers; flush

or surface.

See panelboard interior for the

catalog number.

Volta ge ratings.

Amperage rating.

UL Listing.

001021 40265-381-0315

Install loose label with Spanish translation

on back of cover.

Adhiera la etiqueta suelta con las traducciones

en espanol en la parte posterior del frente.

Please read information before installing

Por favor lea la informacion antes de instalar.

Wire range for lug torque data table.

Made in U.S.A. 40265-668-0215

Suitable for use with 75

Copper or Aluminum

main conductors. See

branch breakers for

branch wire ratings.

* Suitable for use as service equipment when

service disconnect (main breaker) is installed.

* Suitable for use as service equipment when

not more than six main disconnecting means

are provided and when not used as a lighting

and appliance branch circuit panelboard.

See Article 384-14 of the NEC.

* When used as service equipment, all unused

neutral terminals may be used for terminating

equipment ground wires.

1. Box bonding when required. / Conexion a la caja

cuando fuese necesario.

2. Main breaker type: QOM1 or QOM1A. / Interruptor

automatico principal tipo: QOM1 o QOM1A.

3. Service ground

when required. /

Tierra de acometida

cuando fuese

necesario

4. Main lugs kit no:

QOL125. / No. de

accesorio de las

zapatas

principales:

QOL125.

Tw o single poles. One plug

on space or may us

e one

single pole. One two pole

requires two spaces.

To rque Note: When main

breaker or main lug

connector mounting nuts

are loosened or removed,

retighten to 75 lbs./in.

torque.

* May plug on two adjacent spaces.

Torque Note: When interior mounting screw is

loosened or removed, retighten to 35 lbs./in.

Load Center Accessories - Kits

PK4MB2LA Back-fed Main Cir. Brkr. Retaining

QO2175SBPlug-0n Surge Arrestor *

SDSA1175 1 Ph

ase Surge Arrestor

QOSAMK SDSA1175 Mounting Bracket

QOL2125 1 Phase Plug-on Subfeed Lugs *

PK9--27GTA(L) Equipment Ground Bar

PKGTAB Equipment Ground Bar Insulator

LK70AN 70A Max. Neutral Lug

LK100AN 125A Max. Neutral Lug

QOL125 Main Lugs

PK6FL Indoor Cover Lock

Equipment Grounding

Terminals

Service Equipment marking.

Use of unused neutral branch terminal for

equipment grounding, service equipment

application only.

Installation of back-fed main circuit breaker and

required kit.

Alternate wiring diagram for main circuit breaker or

main lug.

Load center accessories.

Neutral lug for 1/0 AWG or larger wire.

Type of circuit breakers

from Square D that

may be used in this

panelboard.

Line / Linea

LOAD / CARGAS

Main Breaker diagram Main Lugs diagram