Siemens Panel Breaker Compatibility Chart: QP, QT, GE, Eaton, Square D & Murray
Choosing the right circuit breaker for a Siemens panel or load center is essential for safe, code-compliant operation. This guide explains which Siemens breaker types fit Siemens panels, how to check compatibility with GE, Eaton, Square D, Murray and Westinghouse breakers, and which specifications you must verify before installation.
Important: Always follow the compatibility chart inside your Siemens panel, the breaker manufacturer’s instructions, and local electrical codes. If you are unsure, consult a licensed electrician before installing or replacing a circuit breaker.
Which Circuit Breakers Are Compatible with Siemens Panels?
For most Siemens residential and light-commercial panels, the safest replacement is a Siemens breaker specifically listed for that panel. Siemens QP, QT, QAF and QPF breakers are commonly used in Siemens load centers, but they are not universally interchangeable with one another.
A Siemens QT breaker should not automatically be used as a replacement for a Siemens QP breaker. The panel label, breaker type, amp rating, number of poles and listed compatibility chart must all match before installation.
Common Siemens breaker types
| Siemens breaker type | Typical use | Compatibility notes |
|---|---|---|
| QP | Standard branch-circuit protection in Siemens load centers | Common plug-on Siemens breaker type; verify panel listing before replacement. |
| QT | Tandem or twin breakers | Only use in panel positions specifically rated for tandem breakers. |
| QAF | AFCI protection | Used where arc-fault protection is required; confirm panel and circuit requirements. |
| QPF | GFCI protection | Used where ground-fault protection is required; verify application and panel compatibility. |
| BL / HBL | Bolt-on breakers for compatible panelboards | Not interchangeable with plug-on QP or QT breakers without verified panel approval. |
Siemens Breaker Compatibility Chart
Use the table below as a starting point. It does not replace the compatibility chart printed inside your Siemens panel or the manufacturer’s official listing.
| Breaker brand / series | Can it be used in a Siemens panel? | What to verify | Recommended action |
|---|---|---|---|
| Siemens QP | Yes, where listed | Panel model, breaker type, amps, poles and interrupting rating | Use as a primary replacement option when listed. |
| Siemens QT | Only in tandem-rated positions | Whether the panel accepts tandem breakers and the required breaker type | Do not substitute QT for QP without verification. |
| Siemens QAF / QPF | Yes, where required and listed | AFCI/GFCI requirements, circuit type, amps and poles | Use for arc-fault or ground-fault protection where applicable. |
| GE breakers | Only if specifically listed | UL listing, panel label, bus/stab design and breaker series | Do not assume GE and Siemens breakers are interchangeable. |
| Eaton breakers | Only if specifically listed | Eaton breaker series, UL listing and Siemens panel compatibility chart | Confirm the exact Eaton model is approved for the panel. |
| Square D breakers | Only if specifically listed | Homeline vs. QO series, panel label and certification markings | Do not mix Square D and Siemens breakers based on appearance alone. |
| Murray breakers | Conditional | Murray/Siemens relationship, panel label and certification markings | Verify the exact panel and breaker listing before use. |
| Westinghouse breakers | Conditional | Legacy brand status, replacement availability and panel compatibility | Use a certified replacement listed for the specific panel. |
How to Identify the Correct Breaker for a Siemens Panel
Before buying or installing a replacement breaker, check the following details on the Siemens panel and existing breaker:
- Panel or load-center model number
- Approved breaker types listed inside the panel
- Breaker type, such as QP, QT, QAF, QPF, BL or HBL
- Amperage rating, such as 15A, 20A, 30A, 40A or 50A
- Number of poles, such as 1-pole, 2-pole or 3-pole
- Interrupting rating, often shown in kA
- UL Listed or CSA certification markings
- Plug-on vs. bolt-on mounting style
- Local electrical code and inspection requirements
The most reliable source is the UL compatibility chart inside the breaker box. It identifies the breakers approved for that specific Siemens enclosure and bus arrangement.
Siemens QT vs. QP Breakers
QT and QP are two of the most commonly searched Siemens breaker series, but they serve different purposes and should not be treated as direct substitutes.
Siemens QT breakers
Siemens QT breakers are tandem or twin breakers. They allow two circuits to be protected in a single panel space, but only where the panel is designed and labeled to accept tandem breakers.
Siemens QP breakers
Siemens QP breakers are standard plug-on branch breakers commonly used in residential Siemens load centers. They are available in different pole and amp configurations, and they must match the panel’s listed breaker type.
| Feature | Siemens QP | Siemens QT |
|---|---|---|
| Configuration | Standard breaker | Tandem / twin breaker |
| Circuits protected | One circuit per pole | Two circuits in one panel space |
| Panel requirement | Must be listed for QP breakers | Must be rated for tandem breakers |
| Interchangeability | Not a direct replacement for QT | Not a direct replacement for QP |
Are GE Breakers Compatible with Siemens Panels?
Some GE breakers may be listed for use in certain Siemens panels, but GE and Siemens breakers should not be assumed to be interchangeable. Panel bus design, breaker mounting, UL listing and the panel’s approved breaker chart all determine whether a GE breaker can be used.
Before installing a GE breaker in a Siemens panel, check the panel label and confirm that the exact GE breaker series is listed as compatible.
Are Eaton Breakers Compatible with Siemens Panels?
Eaton breakers may be compatible with certain Siemens panels only when the specific breaker and panel combination is listed by the manufacturer. Eaton breaker families differ in design and application, so an Eaton breaker should never be installed simply because it appears to fit.
Check the Siemens panel’s compatibility chart, the Eaton breaker’s certification markings, and the breaker’s rated amperage, pole configuration and interrupting rating.
Are Square D Breakers Compatible with Siemens Panels?
Square D breakers are generally not interchangeable with Siemens breakers unless the exact combination is explicitly listed. Square D Homeline and QO breakers are different product families, and neither should be selected based only on physical appearance.
If a Square D breaker is being considered for a Siemens panel, verify the panel model, breaker series, UL listing and approved compatibility chart before installation.
Are Murray Breakers Compatible with Siemens Panels?
Siemens and Murray have a connected brand history, and some components may appear similar. However, Murray breakers are not automatically certified as interchangeable with Siemens breakers in every panel.
Always confirm the panel label and the approved breaker listing before using a Murray breaker as a Siemens panel replacement.
Are Westinghouse Breakers Compatible with Siemens Panels?
Westinghouse is a legacy brand, and breaker compatibility depends on the specific panel model, breaker series and certification listing. Older Westinghouse, Arrow Hart, Murray and ITE equipment may require careful identification before selecting a replacement.
For older panels, use the panel’s original compatibility chart where available, or consult a licensed electrician before installing a replacement breaker.
Can I Use a Reconditioned Circuit Breaker in a Siemens Panel?
A reconditioned breaker should only be used if it is properly tested, certified for reuse by a qualified organization, and listed as compatible with the specific Siemens panel. A used breaker with unknown service history, damaged contacts or unclear certification should not be installed.
For safety-critical residential and commercial applications, a new breaker with verifiable certification is generally the safer choice.
Siemens Breaker Compatibility in Canada
In Canada, breaker selection must consider not only panel compatibility but also CSA certification and provincial electrical-code requirements. A breaker listed for use in the United States may not automatically meet Canadian installation requirements.
Canadian buyers should verify CSA certification, local code requirements and whether the breaker is approved for the specific Siemens load center before purchase or installation.
Frequently Asked Questions
What breakers are compatible with Siemens panels?
Siemens QP, QT, QAF and QPF breakers are commonly used in compatible Siemens panels. Other brands, including GE, Eaton, Square D, Murray and Westinghouse, may only be compatible when the exact breaker and panel combination is listed by the manufacturer.
Are Siemens and GE breakers interchangeable?
Some Siemens and GE breakers may be interchangeable in specific panels, but this must be confirmed using the compatibility chart inside the breaker box. Do not rely on physical fit alone.
Do Eaton breakers work in Siemens panels?
Eaton breakers can work in certain Siemens panels only when the exact Eaton breaker model is listed as compatible. Always check the panel label, breaker series and certification markings.
Can Square D breakers be used in a Siemens panel?
Square D breakers should only be used in a Siemens panel if the exact breaker and panel combination is listed as compatible. Homeline and QO breakers are not automatically interchangeable with Siemens breakers.
Are Murray and Siemens breakers interchangeable?
Murray and Siemens breakers may share some design similarities, but they are not officially interchangeable in every panel. Verify the panel’s approved breaker list before installation.
Are Siemens and ITE breakers interchangeable?
ITE is a legacy brand, and compatibility depends on the panel model and breaker series. Do not assume ITE and Siemens breakers are interchangeable without checking the panel’s compatibility chart.
What should I check before replacing a Siemens breaker?
Check the panel model, approved breaker type, amperage, poles, interrupting rating, UL or CSA certification, mounting style and local electrical-code requirements.
Need Help Identifying a Compatible Siemens Breaker?
If you are not sure which breaker fits your Siemens panel, send us your Siemens panel model number or the existing breaker part number. Our team can help you check compatibility and recommend a suitable replacement.