Which Breaker Fits

Find the document.
Check the conditions.

Source-linked references for residential panels and breakers. No installation verdicts.

Find your reference
AI concept of a fictional closed graphite breaker-like housing, isolated on a transparent surround. No real model or rating is depicted.
AI-generated concept illustration. Fictional closed housing; appearance alone cannot identify a model or establish compatibility.

Start with what you have.

Searches Eaton’s IL00304001Y list only.

Not sure of the brand? Read the label guide.

A match is a document reference.

Physical fit

A shape or width does not establish the documented combination. Keep the equipment and document scope together.

UL guide, items 97–99

Maker-specified

Read the breaker types in the panel maker’s own label or documents.

Square D label examples

Classified list

Read the breaker maker’s exact equipment list and printed limits, beside the panel maker’s statement.

Eaton IL00304001Y

A comparison of document scopes, not an installation rule. Read the UL and manufacturer references →

See what a match actually means.

SC1624M100C

Two printed entries.
Different headings.

Try this documented example →
Entry 1 · Square D · p.2CL115 & CL215 - CL150 & CL250Open original page 2 ↗
Entry 2 · Square D · p.2CL115GFT, CL115AF, CLCAF115, CL115CAF & CL115AFGF - CL130GFT, CL120AF, CL120CAF, CL120AFGF, CLCAF120, CLAF115 & CLAF120Open original page 2 ↗

Eaton IL00304001Y, archived source reviewed 2026-11-16. This example is not a recommendation for your equipment.

Keep the conditions with the number.

Document lookup steps (no verdicts)
  1. 01

    Record the label

    Keep the complete panel identifier, breaker-type list, date and ratings together. Q7

  2. 02

    Read the exact document

    Keep the maker, document revision and original page with the record. E1

  3. 03

    Retain conditions and conflicts

    Record the printed limits and the panel maker’s separate statement. Q1

  4. 04

    Bring the references to an electrician

    A document search does not decide what may be installed. S10

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

The panel label and the electrician / authority having jurisdiction decide.

Sources: Q7 Square D 1100CT0501 pp.33-34, 60; S10 Murray 4810366 Rev. D p.1; S1 Siemens letter 2019-09-05 pp.1-2 (copy linked from the Siemens Sandy FAQ); E1 Eaton IL00304001Y p.1;

S4 Siemens QD brochure p.2; Q1 Square D FAQ FA109246; Q4 Square D 0700DB2001; C3, C7, C8, C10 CPSC notices. This chart lists documents to read; it is not installation guidance.

Brands and dated documents.

SiemensKeep QP, QD, legacy family names and the applicable document separate. Use the source pages to see exactly which statement applies.MurrayRead the Siemens letters alongside the panel’s wiring-diagram label. The published cross-reference tables are shown separately where their wording differs.GECompare THQL and THQP, dated ABB notices and the Canadian selection guide without treating them as the same document or market.Eaton / Cutler-HammerStart with the named family. Keep Eaton’s original-equipment information separate from its classified replacement lists and printed conditions.Square DRead Square D’s own statements beside the documents from classified breaker makers. Keep series, conditions and original pages separate.Older panel brandsFind the original product name and the specific replacement document. A seller’s replacement product is not a condition assessment of an old panel.

If a date or a label is missing.

Keep it as an unresolved field. Do not replace a missing identifier with a photo resemblance or a broad brand match.

Understand the labelRead historical recall noticesOpen the source library