Older panels need a dated document.

Quick answer

Left: product and brand documents. Right: CPSC actions. Only dates stated in the cited primary documents; no ownership history is inferred.

1. 1968

   E12 p.78; S9 p.45

   Non-CTL replacement breakers: "For replacement in enclosures manufactured

   prior to 1968 with unnotched stabs" (Eaton); "panels manufactured before 1968"

   (Siemens)

2. 1979

   C1

   FPE: CPSC notice refers to breakers "manufactured before Reliance acquired FPE

   in 1979"

3. 1983

   C1

   Mar 3, 1983: CPSC closes its FPE Stab-lok investigation (2011 note: "without

   making a determination as to the safety" of the breakers)

4. 1987

   C10

   Sept 1986-May 1987: I-T-E load centers installed in this period covered by

   Siemens' free inspection program (notice issued Nov 1, 1988)

5. 1988

   C11

   Apr 13, 1988: Square D Series 1 two-pole GFCI breakers - free replacement

   program

6. 1988

   C2

   Nov 12, 1988: Challenger type HAGF-15 / HAGF-20 GFCI breakers - recall

7. 1998

   C4

   Oct 7, 1998: Siemens / Murray 2-pole GFCI breakers - recall

8. 2002

   S1 p.1

   After January 2002: Murray Meter Combo, EQ Small Circuit and

   Rock Solid load centers may use Siemens breakers (S1 p.1).

9. 2003

   C16

   "authentic Square D circuit breakers manufactured prior to 2003 did not have

   white paint on the amperage numbers"

10. 2004

    C7; C13

    Nov 3, 2004: Square D QO / Homeline AFCI breakers; Nov 19, 2004: Midwest / GE

    meter load centers

11. 2006

    C6, C14, C15, C16, C5

    Nov 2006-Aug 2010: five recalls of counterfeit "Square D" breakers by

    distributors

12. 2010

    C3

    Sept 23, 2010: Siemens / Murray 15-50 A breakers, load centers and meter

    combos (spring clip)

13. 2014

    C17

    Dec 2, 2014: Eaton MBED3042 residential meter breakers

14. 2019

    S1 p.1

    Sept 5, 2019: Siemens letter - "The Murray brand of circuit breakers is being

    phased out"

15. 2022

    C8

    Jun 16, 2022: Square D QO Plug-on-Neutral load centers - recall

16. 2024

    G1 p.1

    Oct 2, 2024: ABB stops accepting new orders for 1/2" THQP breakers

    Eaton: "Eaton has the largest installed base of residential circuit breakers, which includes legacy brands such as Westinghouse, Challenger, Bryant, and our current Type CH & Type BR

    designs." (E5 p.4)

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

designs." (E5 p.4)

Sources: E12 Eaton CA08100002E p.78; S9 Siemens SPEEDFAX p.45; C1-C17 CPSC recall notices; S1 Siemens letter 2019-09-05 p.1; G1 ABB notice 2024-06-28 p.1; E5 Eaton MZ00400002E p.4.

Dates are those printed in each notice.

Crouse-Hinds

• Brand on Eaton's list. Eaton's list IL00304001Y has a page headed "Crouse-Hinds/Murray Listed Panelboard Catalog Numbers" [E1 p.9].
  • Our transcription of that page has 241 catalog numbers, beginning LC002GS, LC030PC, LC220DC, LH120D and LW102NL [E1 p.9].
  • No Eaton type heading is printed on E1 p.9; among the panelboard pages (pp.5–10), the heading "CLDF115, CLDF120" is printed only on p.5 [E1 pp.5, 9].
• Replacement table. Eaton's p.4 standard table lists CL115 thru CL150 (1-pole) and CL215 thru CL250 (2-pole) as replacing Crouse-Hinds "MP115 thru MP150" and "MP215 thru MP250". [E1 p.4]
• Classified brochure. The 2026 brochure's chart gives the same standard pairing: "Crouse-Hinds MP115 thru MP150 MP215 thru MP250" under CL115 thru CL150 and CL215 thru CL250 [E3 p.3].
• Catalog. Eaton's catalog heads its CL page "Type CL Replacement Breakers for Square D HOMELINE, General Electric, Crouse-Hinds, Thomas & Betts, Murray and ITE®/Siemens Loadcenters" [E12 p.103]. Eaton's knowledge article repeats that list [K4].
• Testing claim. Eaton's residential guide says it "has tested Classified breakers in numerous GE®, Square D®, Siemens®, Murray®, Thomas and Betts®, and Crouse Hinds® panels" [E5 p.8].
• Trademark. Eaton's documents print: "Crouse-Hinds is a federally registered trademark of Cooper Industries." [E0 p.1] [E5 p.44]
• Limits. Eaton's list applies to "Single-Phase, 3-Wire, 120/240 V~ Max. Available Short Circuit Current 10 kAIC" [E1 p.1].
  • The brochure says classified breakers "are for use with panelboards rated 225 amperes, are limited to 120/40 volt applications and the available short circuit rating cannot exceed 10 kilo-amperes" ("120/40" as printed) [E3 p.2].

Westinghouse, Challenger and Bryant

• Eaton's lineage statement. "Eaton has the largest installed base of residential circuit breakers, which includes legacy brands such as Westinghouse, Challenger, Bryant, and our current Type CH & Type BR designs." [E5 p.4]
• Eaton's statements on Type BR in these loadcenters [E5 p.5] [K5] [K6]:
  • Residential guide: "BR breakers are UL approved genuine replacement breakers for loadcenters made by Westinghouse, Challenger, and Bryant." [E5 p.5]
  • Knowledge article 000006519: "BR breakers are UL approved to be used in the following loadcenters: Westinghouse, Challenger, Bryant, Cutler-Hammer, and Eaton BR loadcenters." [K6]
  • Knowledge article 000015509: BR breakers are "UL listed to go in Bryant, Cutler-Hammer BR, Challenger and Westinghouse loadcenters" and "Not UL listed but 'fits' in American Switch, Arrow-Hart, General Switch, GTE/Sylvania loadcenters" [K5].
  • Guide note: "Installing a breaker that has not been tested by UL voids the product warranty." [E5 p.5]
• How Eaton describes BR [K5] [E5 p.5] [E12 p.78]:
  • "1” width"; "Black body with black handle (some old versions have multicolored handles)" [K5].
  • "Trips to CENTER position" [E5 p.5].
  • The Non-CTL Type BRD replacement breakers are "For replacement in enclosures manufactured prior to 1968 with unnotched stabs" [E12 p.78].
• Challenger GFCI recall (1988) [C2]:
  • CPSC covered "type HAGF-15 and type HAGF-20 circuit breakers" made "between February 22, 1988 and April 29, 1988" [C2].
  • "If the name 'Challenger' is embossed on the front of the panel (on the door handle) and/or on the label on the back of the panel/door, that panel may contain circuit breakers requiring replacement." [C2]
  • "If the number on the handle is black or if there is a label with white lettering next to the word 'test', then the HAGF circuit breaker will not need to be replaced." [C2]
• Connecticut Electric (maker of UBI breakers). It lists "UBITB TYPE A BREAKERS" as "SUITABLE REPLACEMENT FOR CHALLENGER A SERIES". The ratings shown are "120VAC 10,000 AIC" for 1-pole and "120/240VAC 10,000 AIC" for 2-pole [CE1 p.6].
  • Its catalog states: "Only Connecticut Electric manufactures NEW replacement circuit breakers that are Safety Agency Certified to UL489." [CE1 p.2]

Plug-on / bolt-on

Square D’s document names QO as plug-on and QOB as bolt-on. Q6 p.3

CTL / Non-CTL

The Eaton drawings distinguish a notched bus stab and rejection tab from an unnotched stab. The replacement conditions are in the document. E12 pp.78, 83

Simplified shapes for terminology only. No installation sequence or dimensional fit is shown.

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

1968".

Sources: Q6 Square D 0730CT9801 (2008) p.3; Q3 Square D FAQ FA124299; E12 Eaton CA08100002E (Nov 2022) pp.78, 83; S9 Siemens SPEEDFAX SF-17 p.45. Schematic only; it does not show

how to install anything.

I-T-E (ITE/Siemens)

• On Eaton's list [E1 pp.5–7]:
  • The panelboard pages headed "ITE/Siemens" hold 678 catalog numbers in our transcription: 255 on p.5, 255 on p.6 and 168 on p.7 [E1 pp.5–7].
  • p.5 is headed "CLDF115, CLDF120". pp.6–7 print no Eaton type heading [E1 pp.5–7].
• Replacement table. Eaton's p.4 table lists for ITE/Siemens [E1 p.4]:
  • Q115–Q150 / Q215–Q250 → CL115–CL150 / CL215–CL250 [E1 p.4];
  • QF115–QF130 → CL115GFT–CL130GFT [E1 p.4];
  • Q115AF–Q120AF → CL115AF–CL120AF [E1 p.4];
  • Q115AFC–Q120AFC → CL115CAF–CL120CAF, CLCAF115–CLCAF120, CLAF115 and CLAF120 [E1 p.4];
  • Q115DFP–Q120DFP → CLDF115–CLDF120 [E1 p.4].
• Trademark. Eaton's guide states: "ITE/Siemens is a federally registered trademark of Siemens AG." [E5 p.44]
• CPSC inspection program (1988) [C10]:
  • "the Circuit Protection Division of Siemens Energy & Automation, Inc. of Alpharetta, Georgia is voluntarily offering free inspection and correction of certain of its I-T-E brand circuit-breaker boxes (load centers) installed between September 1986 and May 1987" [C10].
  • The boxes "can be identified by a five-digit code marked on the top of the wiring diagram label inside the door". The date codes involved are H2586–H3186, J0186–J3086 and K0186–K2486 [C10].
  • "If the wiring diagram label has an 'inspected lugs' stamp, the load center has already been inspected and corrected if necessary." [C10]
• Canada. Siemens Canada's catalog says of its Blue Line BL breakers: "These breakers are used as replacement in old ITE Loadcentres" [S8 p.15].
• Siemens non-CTL breakers. Siemens marks certain breakers: "Non-CTL. For replacement use only in panels manufactured before 1968" [S9 p.45].

Federal Pacific (Stab-Lok), Zinsco, Pushmatic and Wadsworth

What CPSC said about FPE (1983, revised 2011)

• The staff note on the revised release (revised February 18, 2011): "the Commission closed the matter without making a determination as to the safety of FPE circuit breakers or the accuracy of the manufacturer's position on the matter" [C1].
• How the investigation began: "The Commission investigation into Federal Pacific Electric (FPE) circuit breakers began in June 1980, when Reliance Electric Co., a subsidiary of Exxon Corporation and the parent to FPE, reported to the Commission that many FPE circuit breakers did not fully comply with Underwriters Laboratories, Inc. (UL) requirements." [C1]
• "Commission testing confirmed that these breakers fail certain UL calibration test requirements." [C1]
• "The Commission investigation focused primarily on 2 pole residential circuit breakers manufactured before Reliance acquired FPE in 1979." [C1]
• "While the Commission is concerned about the failure of these FPE breakers to meet UL calibration requirements, the Commission is unable at this time to link these failures to the development of a hazardous situation." [C1]
• "The Commission can reopen its investigation of FPE circuit breakers if further information warrants." [C1]
• CPSC's advice for all breakers includes: "When in doubt, consult a licensed electrician." [C1]

Replacement breakers listed by Connecticut Electric

Trademark statements in the same catalog [CE1 pp.7, 9, 10, 12]:

• "Federal Pacific Electric® and Stab-Lok® are registered trademarks of American Circuit Breaker Corporation." [CE1 p.7]
• "Pushmatic® is a registered trademark of Siemens Energy and Automation." [CE1 p.9]
• "Zinsco® and the Zinsco logo are registered trademarks of Connecticut Electric, Inc." [CE1 p.10]
• "Wadsworth™ and the Wadsworth logo are trademarks of Connecticut Electric, Inc." [CE1 p.12]

The catalog notes that "Catalog numbers in parentheses denote former Zinsco® part numbers" [CE1 p.11].

Counterfeits bearing these names

• ICE reported that a business owner "traveled to the People's Republic of China with sample circuit breakers produced in the United States and met with manufacturers there to produce products bearing the counterfeit trademark name 'Stab-Lok.'" [O2]
• He imported breakers "bearing this counterfeit trademark and also 'Zinsco,' 'Telemecanique,' 'ABB' and 'Siemens.'" [O2]
• He also affixed "labels bearing the counterfeit trademark of 'UL' for 'Underwriters Laboratories'" [O2].

Statements that differ, side by side

Connecticut Electric's catalog has a "LOAD CENTER AND CIRCUIT BREAKER CROSS-REFERENCE" with rows headed "YOUR PANEL:" and "WILL ACCEPT THESE BREAKERS:" [CE1 p.20]. The panel makers and Eaton say the following about the same brands:

What to bring to an electrician

• The panel label and wiring diagram information from inside the door [S10 p.1] [C10].
• For a Classified breaker: the IL00304001Y page showing your exact panel catalog number, and its p.1 conditions [E1 p.1].
• Any CPSC notice that matches the panel or breaker identifiers [C1] [C2] [C10].

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; primary (vendor) = issued by the maker of the replacement product described.

Related reference photographs