QO/Homeline Load Centers

QO vs. Homeline Load Centers

		Homeline Load Centers
QO 3/4 in. breakers feature Visi-Trip trip to center position	UL Listed Only for Square D Circuit Breakers	Homeline 1 in. circuit breakers trip to center position
PON circuit breakers installed on any space in select Load Centers	Accepts Plug-on Neutral CAFIs	PON circuit breakers installed on any space
Top and split neutral plus (2 or 3) #1 AWG terminals	Backed-out Neutral Terminal Screws	Fully distributed split neutral
Tin-plated copper	Bus Bars	Tin and copper plated aluminum
Shielded	Bus Bars	Not shielded
3/4 in. per 1 Pole space 40 spaces/circuit = 33 3/4 in. Tail Enclosure	Circuit Breaker Format	1 in. per 1 Pole space 40 space/circuit = 39 1/2 in. Tall Enclosure
Option for Surface or Flush covers that ship separately, or a combo cover (in carton) shipped with Load Center	Cover Options	Combo cover (in carton) shipped with Load Center
Lifetime Limited	Warranty	Combo cover (in carton) shipped with Load Center

QO/Homeline Enclosure Dimensions and Knockout Information

Indoor Load Centers

Enclosure Dimensions for Indoor Load Centers

Box No.	W		H		D		Box No.	W		H		D
Box No.	in.	mm	in.	mm	in.	mm	Box No.	in.	mm	in.	mm	in.	mm
1	3.81	97	6.72	171	3.00	76	14	14.25	362	20.92	531	3.75	95
2	4.81	122	9.30	236	3.19	81	15	20.00	508	50.00	1270	5.75	146
3	4.81	122	9.30	236	3.19	81	16	20.00	508	62.00	1730	5.75	146
4	8.88	226	12.57	319	3.80	97	17	20.00	508	53.00	1350	5.75	146
5	14.25	362	14.92	379	3.75	95	18	5.88	149	16.12	409	3.38	86
6	14.25	362	17.92	455	3.75	95	19	7.56	192	23.12	587	4.25	108
7	14.25	362	20.92	531	3.75	95	20	9.62	244	26.12	663	4.75	121
8	14.25	362	26.04	661	3.75	95	21	8.88	226	14.80	376	3.80	97
9	14.25	362	29.86	758	3.75	95	22	8.55	217	23.92	608	3.95	100
10	14.25	362	33.78	858	3.75	95	23	14.25	362	29.86	758	3.75	95
11	14.25	362	37.98	965	3.75	95	24	14.25	362	43.15	1100	3.75	95
12	14.25	362	39.37	1000	3.75	95	25	14.25	362	48.5	1240	3.75	95
13	5.88	149	13.12	333	3.38	86	26	14.25	362	33.78	858	3.75	95

Knockouts for Indoor Load Centers

Symbol	A	B	C	D	E	F	G	H	I
Conduit Size	1/2	3/4	1	1 1/4	1 1/2	2	2 1/2	3	3 1/2

Indoor Load Centers with Qwik-Grip

Enclosure Dimensions for Indoor Load Centers with Qwik-Grip

Box No.	W		H		D
Box No.	in.	mm	in.	mm	in.	mm
7Q	14.25	362	20.92	531	3.75	95
8Q			26.04	661
9Q			29.86	758
10Q			33.78	858
11Q			37.98	965
12Q			39.37	1000

Rainproof Load Centers

Enclosure Dimensions for Rainproof Load Centers

Box No.	W		H		D
Box No.	in.	mm	in.	mm	in.	mm
1NM	6.52	166	8.79	223	3.90	99
1R HOME250SPA and QO260NATR top endwall has no hub opening. *	4.88	124	9.38	238	4.00	102
2R	8.88	226	12.65	321	4.27	108
3R	14.75	375	18.92	481	4.52	115
4R			22.06	560
5R			26.04	661
6R			29.86	758
7R			33.78	858
8R			37.98	965
9R	4.56	116	6.50	165	3.88	99
10R	6.92	176	13.18	335	4.12	105
11R	7.56	192	23.24	590	4.75	121
12R	9.62	244	26.24	666	5.50	140
13R	6.92	176	16.18	411	4.12	105
14R	14.75	375	39.37	1000	4.52	115
15R	8.88	226	14.8	376	4.27	108
16R	8.55	217	24.75	629	4.16	106
17R	8.88	226	12.65	321	4.27	108

Knockouts for Rainproof Load Centers

Symbol	A	B	C	D	E	F	G	H
Conduit Size	1/2	3/4	1	1 1/4	1 1/2	2	2 1/2	3

QO/Homeline Bolt-On Hubs

B075

B150

B250

Square D equipment with R or RB suffix, designated NEMA 3R rainproof construction, utilizes bolts-on hubs listed below. The RB devices will accept 3/4 in. through 2 1/2 in. bolt-on hubs without the use of reducers.

Off-center conduit thread openings and elongated mounting holes provide quick and easy adjustment to eliminate costly conduit offsets and bends. Catalog devices with suffix R require 3 in. through 4 in. field cut opening. Hubs are suitable for use with conduit having ANSI standard taper pipe thread.

UL Listed Bolt-On Hubs for RB Devices

Hub Cat. No.	B075	B100	B125	B150	B200	B250
Conduit Size	3/4 in.	1 in.	1-1/4 in.	1-1/2 in.	2 in.	2-1/2 in.

NOTE: Closing cap (catalog number B-CAP) is provided factory-installed on each device with the RB suffix.

UL Listed Enclosure Coupling for RB Devices

(Designed for mounting in field cut opening. Includes gasket and four mounting bolts and nuts.)
Hub Cat. No.	B300	B400
Conduit Size	3 in.	4 in.

QO/Homeline Accessories

PSDS

Circuit Identification Stickers

Load Center	Cat. No.	Usage Information
QO and Homeline	PSDS	Circuit identification stickers for use on cover directory labels to identify branch circuits

QO1SE

Cover Sealing Strap

Load Center	Cat. No.	Usage Information
QO	QO1SE	Provides means of sealing trim mounting screws on QO load center covers

PK8FL

PK6FL

PK4FL

Door Lock Kits

(Available for indoor load centers. Two keys provided with each lock kit.)
Load Center	Cat. No.	Usage Information
QO	PK8FL QO403L60NF/S does not have provisions for a field-installed lock. *	Use with QO612L100DF/S, QO612L100DFCU/SCU, QO612L100DTF/S, QO816L100DF/S, QO816L100DFCU/SCU, QO816L100DTF/S, QO48M30DSGP, or QO48M60DSGP
QO and Homeline	PK6FL	Use with convertible mains, 1Ø and 3Ø 100–225 A, and fixed mains, 3Ø 125–225 A indoor load centers
QO	PK4FL	Use with 300 and 400 A indoor load centers

QOFP

QO2P

HOMFP

Filler Plates

(Fast to install, snap-in type)
Load Center	Cat. No.	Usage Information
QO	QOFP	Use on QO load center cover to fill unused branch circuit breaker opening
QO and Homeline	QOM1FP	Fills main circuit breaker opening in convertible load center covers 100–125 A
QO and Homeline	QOM2FP	Fills main circuit breaker opening in convertible load center covers 150–225 A
QO	QO2FP	Fills main circuit breaker opening in Q style 3Ø load center covers (S03 Series)
Homeline	HOMFP	Use on Homeline load center cover to fill unused branch circuit breaker opening

QOM1PA

QOM2PA

Handle Padlock Attachments

Load Center	Cat. No.	Usage Information
QO and Homeline	QOM1PA	For padlocking main circuit breakers in convertible load center OFF
QO and Homeline	QOM2PA	For padlocking main circuit breakers in convertible load center OFF

4028344850K

4028345850K

Neutral Bonding Screw

Load Center	Cat. No.	Usage Information
QO and Homeline	4028344850K	For use on all Homeline and QO 125 convertible main load centers
	4028345850K	For use on QO 150–225 convertible main load centers
	PKNBSCP	For use on QO and Homeline convertible main load centers

LK70AN

LK22ANHOM

Neutral / Ground Lugs

Load Center	Cat. No.	Usage Information
QO and Homeline	LK70AN	Field-installed for 12– 2 Al or 14–4 Cu AWG wire
	LK100AN	Field-installed for 6–2/0 Al/Cu AWG wire
	LK125AN	Field-installed for 14–2/0 Al/Cu AWG wire
QO	LK150AN	Field-installed for 2–3/0 Al/Cu AWG wire
QO	LK225AN	Field-installed for 4 AWG to 300 kcmil Al/Cu wire. Use in Series S, 150-225 A QO load center.

UCD42CP

Replacement Cover Directory Label

Load Center	Cat. No.	Usage Information
QO and Homeline	LSDL	1 through 42 numbered universal replacement directory label for load center covers
UCD42CP	1 through 42 universal circuit directory kit, including circuit identification labels

Load Center

Cat. No.

Usage Information

QO and Homeline

LSDL

1 through 42 numbered universal replacement directory label for load center covers

UCD42CP

1 through 42 universal circuit directory kit, including circuit identification labels

Retaining Kit for Breakers Used as Backfed Mains

Load Center	Cat. No.	Usage Information
(Back-fed main circuit breaker retaining kits secure 2-pole, 10-125 A circuit breakers to single-phase or three-phase mains interiors when used as back-fed main circuit breakers. Mounting of retaining kits is based on top-feed applications.)
QO	PK2MB	Fasten circuit breaker to interior when used as a back-fed main. For QO612L100F/S, RB, QO612L100DF/S, QO816L100F/S, RB, QO816L100DF/S and QO148L125GF/S, GRB load centers.
	PK3MB	Fasten 3P circuit breaker without accessories to left side of interior when used as a back-fed main. For 3Ø load centers.
	PK5RK	Fasten circuit breaker to interior when used as a back-fed main for 2P QO 150–200 A circuit breakers.
	PK4MB2LA	Fasten one circuit breaker with or without electrical accessories to right side of interior when used as a back-fed main. For 1Ø 100–125 ampere convertible main load centers. Series S01 and S02
	PK4MB2HA	Fasten one circuit breaker with or without electrical accessories to right side of interior when used as a back-fed main. For 1Ø 150–225 ampere convertible main load centers. Series S01 and S02
Homeline	HOM1RK	Fasten circuit breaker to interior when used as a back-fed main. For HOM612L100F/S, RB and HOM48L125GC, GRB load centers.
	HOM4RK2LA	Fasten one circuit breaker right side of interior when used as a back-fed main. For 100–125 A convertible main load centers, Series S01 and S02
	HOM4RK2HA	Fasten one circuit breaker right side of interior when used as a back-fed main. For 150–225 A convertible main load centers, Series S01 and S02
	HOM5RK	Fasten circuit breaker to interior when used as a back-fed main. For 2P 150–200 A circuit breakers.

PKSB1HA

PKSB3

PKSB3BF

Service Entrance Barriers

Load Center	Cat. No.	Usage Information
QO and Homeline	PKSB1LA	QO / Homeline 1Ø 100–125 A QOM1 convertible main load centers
QO and Homeline	PKSB1HA	QO / Homeline 1Ø 150–225 A QOM2 convertible main load centers
QO	PKSB3	QO 3Ø convertible main load centers
	PKSB1QOBF	QO 1Ø back-fed main breaker applications
	PKSB3BF	QO 3Ø back-fed main breaker applications
Homeline	PKSB1HOMBF	Homeline back-fed main breaker applications

Generator Circuit Breaker Interlock Kit

Load Center	Cat. No.	Usage Information
QO	QOCRBGK1C	For use on G and S Series NEMA 1 and G, S1 and S2 Series NEMA 3R load centers. Interlocks a QOM1 2P main circuit breaker of a load center (100–125 A) with a QO 2P (15–125 A) branch circuit breaker. Includes a retaining kit.
	QOCGK2C	For use on G and S Series NEMA 1 and G and S1 Series NEMA 3R load centers. Interlocks a QOM2 2P main circuit breaker of a load center (150–225 A) with a QO 2P (15–125 A) branch circuit breaker. Includes a retaining kit.
	QORBGK2C	For use on S2 Series NEMA 3R load centers. Interlocks a QOM2 2P main circuit breaker of a load center (150–225 A) with a QO 2P (15–125 A) branch circuit breaker. Includes a retaining kit.
Homeline	HOMCRBGK1C	For use on S Series NEMA 1 and NEMA 3R load centers. Interlocks a QOM1 2P main circuit breaker of a load center (100–125 A) with a Homeline 2P (15–125 A) branch circuit breaker.
	HOMCGK2C	For use on S Series NEMA 1 and S1 Series NEMA 3R load centers. Interlocks a QOM2 2P main circuit breaker of a load center (150–225 A) with a Homeline 2P (15–125 A) branch circuit breaker.
	HOMRBGK2C	For use on S2 and S3 Series NEMA 3R QOM2 load centers. Interlocks a QOM2 2P main circuit breaker of a load center (150–225 A) with a Homeline 2P (15–125 A) branch circuit breaker.

PKQGFP

PKQGI

Qwik-Grip Load Center Accessories

Load Center	Cat. No.	Usage Information	Qty.
QO and Homeline	PKQGS	Qwik-Grip replacement shield — Qwik-Grip shield	1
	PKQGFP	Qwik-Grip fillers — Qwik-Grip fillers	10
	PKQGI	Qwik-Grip replacement insert — Qwik-Grip insert	1
	PKQGA	Qwik-Grip assembly kit — Qwik-Grip shields, Qwik-Grip fillers	4 each

Manual Transfer Equipment Kit

(Manual transfer equipment kits secure two 2-pole, 10-125 A circuit breakers.)
Load Center	Load Center	Usage Information
QO	QO2DTI	For interlocking the handles of two 2P or one 2P and one 1P QO and Q1 circuit breakers mounted side-by-side so that only one circuit breaker can be ON at a time.
	QODTIM	QO2DTI mechanical interlock attachment with retaining kits for securing two adjacent back-fed circuit breakers in dual power supply applications. Can be used with (2) 2P or (1) 2P and (1) 1P QO circuit breakers in QO816L100 load centers.
	PK4DTIM4LA	Secures two 2P circuit breakers to right side of interior when used as back-fed mains, a QO2DTI Kit included for back-up power supply applications. For 1Ø 100–125 ampere convertible main load centers. Series S01 and S02.
	PK4DTIM4LAL	Secures two 2P circuit breakers to left side of interior when used as back-fed mains, a QO2DTI Kit included for back-up power supply applications. For 1Ø 100–125 ampere convertible main load centers. Series S01 and S02.

Ground Bar Kits

(Field-installable in all load centers. Same wire size as neutral terminals. Suitable for copper or aluminum wire)
Load Center	Load Center	Usage Information
QO and Homeline	PK3GTA1	Ground Bar Assembly—3 connectors
	PK4GTA	Ground Bar Assembly—4 connectors
	PK5GTA	Ground Bar Assembly—5 connectors
	PK7GTA	Ground Bar Assembly—7 connectors
	PK9GTA	Ground Bar Assembly—9 connectors
QO	PK12GTA	Ground Bar Assembly—12 connectors
QO and Homeline	PK15GTA	Ground Bar Assembly—15 connectors
	PK18GTA	Ground Bar Assembly—18 connectors
	PK23GTA	Ground Bar Assembly—23 connectors
	PK27GTA	Ground Bar Assembly—27 connectors
QO	PK15GTA6	Ground Bar Assembly—21 connectors. Use in high amperage load centers
QO	PK15GTAL	Standard PK15GTA with a 1–4/0 Al/Cu Lug
QO and Homeline	PK18GTAL	Standard PK18GTA with a 1–4/0 Al/Cu Lug
QO	PK23GTAL	Standard PK23GTA with a 1–4/0 Al/Cu Lug
QO and Homeline	PKGTALP1	Ground Bar Pack— PK9GTA, PK9GTA, and LK100AN
	PKGTALP2	Ground Bar Pack— PK9GTA, PK18GTA, and LK100AN
	PKGTALP3	Ground Bar Pack—PK15GTA, PK18GTA, and LK100AN
	PKGTAB	Insulator Kit for PK7GTA through PK27GTA

PK3GTA1	PK9GTA
PK15GTAL	PK27GTA

Ground Bar Kits

(All PK equipment grounding kits are supplied with mounting screws, necessary installation instructions, and an equipment grounding terminal self-adhesive label.)
Catalog No.	Total Qty.	Terminals						Approximate Overall Length		Distance Between Mounting Holes		Mounting
		Quantity Each Size (See Wiring Range)						Approximate Overall Length		Distance Between Mounting Holes
		I	II	III	IV	V	VI	in.	mm	in.	mm
PK3GTA1	3	3	—	—	—	—	—	1.38	35	One hole	One hole	Top
PK4GTA	4	4	—	—	—	—	—	1.63	41	One hole	One hole	Top
PK5GTA	5	5	—	—	—	—	—	2.25	57	1.25	32	Top
PK7GTA	7	7	—	—	—	—	—	2.88	73	1.25	32	Top or Side
PK9GTA	9	9	—	—	—	—	—	3.78	96	3.13	80	Top
PK12GTA	12	12	—	—	—	—	—	4.7	119	3.13	80	Top
PK15GTA	15	15	—	—	—	—	—	5.63	143	3.13	80	Top
PK15GTAL	16	15	1	—	—	—	—	8.13	207	3.13	80	Top
PK15GTA6	21	15	—	—	6	—	—	5.88	149	3.13 in. (80 mm) on small terminals; 5.25 in. (133 mm) on large terminals. *	3.13 in. (80 mm) on small terminals; 5.25 in. (133 mm) on large terminals. *	Top
PK18GTA	18	18	—	—	—	—	—	8.13	167	3.13	80	Top
PK18GTAL	19	18	1	—	—	—	—	5.88	224	3.13	80	Top
PK23GTA	23	23	—	—	—	—	—	6.56	206	3.13	80	Top
PK23GTAL	24	23	1	—	—	—	—	8.81	240	3.13	80	Top
PK27GTA *	27 or 26	27 or 26	—	1	—	—	—	8.11	238	3.13	80	Top

Wiring Range

Size	Cu (AWG)	Al (AWG)
I	(1) #14 – # 4 or (2) #14 or #12	(1) #12 – #4 or (2) #12 or #10
II	(1) #1 – 4/ 0	(1) #1 – 4/0
III	(1) #6 – 2/ 0	(1) #6 – 2/0
IV	(1) #6 – 3/0	(1) #6 – 3/0
V	(1) #14 – 1/0	(1) #14 – 1/0
VI	(1) #10 – 2/0	(1) #6 – 2/0

QO/Homeline Surge Protective Devices (SPD)

Square D Whole Home Surge Protection blocks the voltage spikes at the load center, providing downstream protection for all your connected devices. Square D Surge Protective Devices have been developed based on decades of expertise and industry-leading technology, making it a trusted brand among homeowners and electrical contractors alike.

To decide which device is best for your home, consider the following sections when working with your electrical contractor.

Load Center and CSED Surge Protective Devices

Cat. No.	Description	Surge Current per Phase	Schedule
1 phase – 3 wire
QO2175SB	QO Surgebreaker	22.5 kA	DE1B
HOM2175SB	HOM Surgebreaker	22.5 kA
SDSA1175	1Ø3W–120/240 V Compact SPD	36 kA
QO250PSPD	QO Plug-on Neutral SPD	50 kA
HOM250PSPD	HOM Plug-on Neutral SPD	50 kA
HEPD25	SurgeArrest Whole Home Electronic Protection	25 kA
HEPD50		50 kA
HEPD80		80 kA
SDSB80111	Surgebreaker Plus (all-in-one protection for appliances, ethernet, and telephone)	80 kA
3 phase – 3 wire
SDSA2040D	3Ø3W–240 V Compact SPD	40 kA	DE1B
3 phase – 4 wire
SDSA2040	3Ø4W–208Y/120 V Compact SPD	40 kA	DE1B

Load Center and CSED Surge Protective Devices Mounting Kits

QOSAMK

HEPD58MKF

Cat. No.	Description	Surge Current per Phase	Schedule
QOSAMK	SDSA1175 Mount Kit	—	DE1B
HEPD25MKF	HEPD25 Flush Mount Kit	—
HEPD58MKF	HEPD50 and HEPD80 Flush Mount Kit	—

Whole Home Surge Protection

QO250PSPD

HOM250PSPD

Plug-on Neutral SPD for QO (QO250PSPD) and Homeline (HOM250PSPD)

Use — QO250PSPD for QO load centers, combination devices (CSEDs) and NQ panelboards. HOM250PSPD for Homeline load centers and combination devices (CSEDs)

Feature — Plug-on Neutral connectivity. Easy to install, no wiring needed.

Installation Flexibility — NEMA 1 (Indoor)

Surge Current Capacity — 50 kA

Standards — UL Listed 1449, 4th Edition and CSA Certified

Warranty — 5 Year/$50,000 Connected Equipment Limited Warranty

SDSA1175

Hard-Wire Whole House Surge Protective Device (SDSA1175)

Use — Suitable for Use in Service Entrance locations: Meets Requirements of NEC Article 280
Feature — Coordinated Fuse Technology
Installation Flexibility — NEMA 4X (Indoor and Outdoor)
Surge Current Capacity — 36 kA
Standards — UL Listed 1449, 4th Edition and CSA Certified
Warranty — 2 Years

QO2175SB

HOM2175SB

Surgebreaker for QO (QO2175SB) and Homeline (HOM2175SB)

Use — QO2175SB for QO load centers, combination devices and NQ panelboards. HOM2175SB for Homeline load centers and combination devices
Installation Flexibility — NEMA 1 (Indoor)
Surge Current Capacity — 22.5 kA per phase
Standards — UL Listed 1449, 4th Edition and CSA Certified
Warranty — 3 Year/$10,000 Connected Equipment Limited

HEPD25

Home Electronics Protective Device (HEPD25, HEPD50, HEPD80)

Use — Small, affordable whole house surge suppression that can easily be mounted to Square D and competitors load centers
Installation Flexibility — NEMA 4X (Indoor and Outdoor). Easy-to-install, optional flush mount kit for a professional look when installed in a finished wall ( HEPD25MKF , HEPD58MKF ).
Surge Current Capacity — 25 kA ( HEPD25 ), 50 kA ( HEPD50 ) and 80 kA ( HEPD80 )
Standards — UL Listed 1449, 4th Edition and CSA Certified
Warranty — 3 Year/$30,000 ( HEPD25 ) or 3 Year/$50,000 ( HEPD50 ) or 5 Year/$75,000 ( HEPD80 ) Connected Equipment Limited Warranty

SDSB80111

Surgebreaker Plus Whole House Surge Protector (SDSB80111)

Use — Mounts directly to any load center from any manufacturer
Feature — Removable modules (cable, Ethernet, and telephone) allow quick and easy installation customization
Installation Flexibility — NEMA 1

(Indoor)

Surge Current Capacity — 80 kA
Standards — UL Listed 1449, 4th edition
Warranty — 5 Year/$100,000 Connected Equipment Limited Warranty