GE: distinguish the family and the market.

Quick answer

GE residential load centers and GE THQL breakers are now branded ABB [G3 p.2].

• THQL, THQLT (tandem) and THQLQ (quad): ABB says they are compatible with GE PowerMark and ABB ReliaHome load centers [G3 p.2] [G1 p.1].
• ½-inch THQP: entered ABB's classic phase on 28 June 2024. No new orders were accepted from 2 October 2024, and it became obsolete on 31 December 2024. The new ReliaHome load centers do not accept THQP [G1 p.1, p.3].
• Eaton Type CL is UL Classified to replace THQL1115–THQL1150 and THQL2115–THQL2150 in the GE panelboards and meter centers on Eaton's list [E1 p.4] [E1 p.2, p.8].

Compare a printed dimension, not an installation permission. Equal width does not establish a listed or classified combination.

Eaton CH3/4 in. per poleE5 p.5

Eaton BR1 in. per poleE5 p.5

Eaton CL1 in. per poleE12 p.103

Eaton CHQ3/4 in. per poleE5 p.8

Square D QO3/4 in. per poleQ7 p.67

Square D Homeline1 in. per poleQ7 p.67

Siemens QP1 in. per poleS9 p.1

Siemens QD3/4 in. per poleS9 p.47

GE / ABB THQL1 in. per poleG1 p.1

GE / ABB THQP1/2 in. per poleG1 p.1

Original drawing and source annotations

The original drawing is schematic, not a product label, field measurement or installation instruction.

Open the original full-size SVG

"½" THQP"; ABB not accepting new orders as of October 2, 2024

Sources: E5 Eaton Residential Product Guide MZ00400002E p.5, p.8; K5 Eaton KB 000015509; E12 Eaton CA08100002E (2022) p.103; E1 Eaton IL00304001Y p.1; Q6 Square D 0730CT9801 p.3;

Q7 Square D 1100CT0501 pp.45, 67; S9 Siemens SPEEDFAX SF-17 pp.1, 47; S4 Siemens QD brochure p.1; G1 ABB THQP notice (June 28, 2024) p.1. The panel label governs.

GE / ABB compatibility table

THQP → replacement map (from ABB's 2024 lifecycle notice)

ABB lists these replacement products for ½-inch THQP [G1 p.2]:

• Tandems: THQLT1515, THQLT2020, THQLT1520 [G1 p.2].
• Quads: THQLQ151515, THQLQ152015, THQLQ153015, THQLQ154015, THQLQ201520, THQLQ202020, THQLQ203020, THQLQ204020, THQLQ203015 [G1 p.2].
• Standard 1-inch: THQL2145, THQL2150 and "THQL 1” breakers" [G1 p.2].
• ABB's notice prints the THQP legacy list (THQP115…THQP250) beside the replacement list [G1 p.2].

ABB's UL Classified Type TQ for Square D QO load centers

• ABB's BuyLog lists "TQ CIRCUIT BREAKERS": "3/4" UL Classified Circuit Breakers for use in *Square D **QO Load Centers." [G4 p.1-57]
• Rating line: "10 kAIC RMS symmetrical" [G4 p.1-57].
• Catalog numbers: TQ1115, TQ1120, TQ1130, TQ1140, TQ1150 (1-pole); TQ2115, TQ2120, TQ2130, TQ2140, TQ2150, TQ2160 (2-pole) [G4 p.1-57].
• Square D says its QO and Homeline load centers are "UL tested, listed, and labeled to accept ONLY Square D circuit breakers" [Q1].

How to read a GE panel label

• Find the load center catalog number (diagram D1).
• Check whether the label or interior shows ½-inch (THQP) provisions. ABB notes THQP "could not be installed in every GE load center or in every space of a GE load center" [G2 p.1].
• To compare against Eaton's Classified list, match the panel catalog number to IL00304001Y [E1].

Your panel label

01

Panel catalog number

02

Printed breaker types

03

Date code

Illustrative layout. No real model or rating.

Keep the label and the document together.

Catalog numbers, breaker-type lists and dates are different fields. The actual label can use a different layout.

1. Catalog number

   Record the complete identifier, including suffixes. Square D label samples, pp.33–34, 60

2. Printed breaker types

   Keep the wiring-diagram label with the box label. Murray 4810366, p.1

3. Date code

   Preserve the exact code when comparing an applicable notice. CPSC QO notice

Original drawing and source annotations

The original drawing is schematic, not a product label, field measurement or installation instruction.

Open the original full-size SVG

door of the panel" [C8]

Sources: Q7 = Square D catalog 1100CT0501 (06/2026) pp.33-34, 60 (label and wiring-diagram sample callouts); S10 = Murray/Siemens instructions 4810366 Rev. D pp.1-2; C10, C3, C8 =

CPSC recall notices (1988; 2010; 2022). The panel label and a licensed electrician decide what may be installed.

Era and series history

Recalls and counterfeits

• GE meter socket load centers (2004). CPSC, Midwest and GE recalled 2,754 meter socket load centers made from May through August 6, 2004: Midwest models R256EB1A, R256EB1NA and R256EB1018A, and GE model TSLR1220CSAL, date codes SAL421 through 432. Some were sold with loose internal bolt connections, which could cause excessive heat or fire [C13].
• CPSC's general counterfeit-breaker warning [C9]. OSHA issued a separate alert about incorrectly refurbished Eaton/Cutler-Hammer E2 mining-series breakers [O1].

Common confusions

• "THQP fits any GE panel." ABB says THQP can only be used in ½-inch-compatible GE load centers [G2 p.1].
• "Tandem means THQP."
  • ABB lists THQLT tandems and THQLQ quads as replacement products for THQP [G1 p.2].
  • ABB says they "can be used in any GE or ABB load center" [G2 p.1].
  • The same ABB sheet says quads "can be installed in any (2) one-inch spaces" and, a few lines later, "utilize (2) two-inch spaces"; both wordings are printed [G2 p.1].
• "Eaton's chart says THQ, so it doesn't cover THQL." An older Eaton chart (file metadata 2011) says THQ [E0]; the 2024 list and 2026 brochure say THQL [E1 p.4] [E3 p.3].

FAQ

What are GE breakers called now? ABB's 2025 compatibility letter says GE load centers and GE THQL breakers are now branded ABB [G3 p.2].

Do new ABB breakers fit my old GE panel? ABB says the new ABB breakers are backward compatible and lists THQL/THQLT/THQLQ as compatible with GE PowerMark [G3 p.2]. Your label governs.

Can I still buy THQP? ABB stopped accepting new THQP orders on 2 October 2024, and THQP became obsolete on 31 December 2024 [G1 p.1, p.3].

Can I use an Eaton CL breaker in a GE panel? Eaton's Type CL is UL Classified to replace THQL1115–THQL1150 and THQL2115–THQL2150 in the GE panelboards on its list [E1 p.4, p.8]. The panel catalog number must be listed. The limits are 120/240 V and 10 kA [U1 item 97].

Are GE and Square D breakers interchangeable? Square D says QO breakers are only UL tested and approved for QO, NQO, NQOD and NQ panelboards [Q3], that Homeline breakers are not classified for competitors' load centers [Q2], and that its load centers accept only Square D breakers [Q1].

Are Eaton BR breakers compatible with GE panels? Eaton: "BR breakers are UL approved to be used in the following loadcenters: Westinghouse, Challenger, Bryant, Cutler-Hammer, and Eaton BR loadcenters." [K6] For GE panels, Eaton's documented option is Type CL on its list [E1 p.4, p.8].

Sources

All documents fetched 2026-11-15 or 2026-11-16 and archived with SHA256 (see SOURCE-LIBRARY.csv). Kind: primary = issued by the manufacturer/agency; primary-mirror = manufacturer document hosted by a third party.

Related reference photographs