Our Verdict
Siemens Single-Pole Plug-In Circuit Breaker 15 Amp — 9.1/10. A strong choice for standard 15 amp single-pole circuits in compatible Siemens, Murray, and properly labeled related panels, with a helpful trip indicator for easier troubleshooting.
A 15 amp breaker is one of the most common parts in a residential electrical panel, but compatibility matters as much as amperage. The Siemens Q115 is designed for Siemens-compatible load centers and is best suited for standard 120-volt branch circuits where a single-pole, plug-in breaker is required.
Best fit: Siemens Single-Pole Plug-In Circuit Breaker 15 Amp — 9.1/10
The Siemens Q115 is a strong choice for replacing or adding a standard 15 amp single-pole breaker in compatible Siemens, Murray, and select related panels, especially if you want an easy-to-identify trip indicator.
Siemens Single-Pole Plug-In Circuit Breaker 15 Amp
The Siemens Q115 is a 15 amp, single-pole, plug-in circuit breaker intended for compatible residential electrical panels. It is designed to protect a standard 120-volt branch circuit from overloads and short circuits, making it a common replacement part for lighting circuits, bedroom circuits, general-use receptacles, and other properly sized 15 amp circuits.
Its biggest advantage is straightforward compatibility with Siemens load centers, along with Murray and certain other compatible panel lines where the panel labeling permits this breaker type. That compatibility point is important: breakers should not be chosen by physical fit alone. The panel’s labeling and electrical code requirements should determine whether the Q115 is acceptable for your installation.
The Q115 also includes a red trip indicator flag, which helps homeowners and electricians identify when the breaker has tripped. That is especially useful when troubleshooting nuisance trips or confirming whether a circuit interruption came from the breaker rather than a switch, GFCI device, or loose connection elsewhere on the circuit.
This breaker is best for maintenance, like-for-like replacement, or panel work where a standard 15 amp Siemens-compatible single-pole breaker is specified. It is not a substitute for AFCI, GFCI, dual-function, tandem, two-pole, or higher-amperage breakers where those are required by the circuit, location, or current electrical code.
| Specification | Siemens Q115 |
|---|---|
| Model number | Q115 |
| Breaker type | Single-pole plug-in circuit breaker |
| Amperage | 15 amps |
| Typical circuit voltage | 120 volts |
| Primary use | Overload and short-circuit protection for compatible branch circuits |
| Compatible panel families | Siemens, Murray, and certain other panels where listed on the panel label |
| Trip indication | Red trip indicator flag |
| Category | Circuit breakers & fuses |
Always verify breaker compatibility on the panel’s labeling and follow local electrical code. If you are unsure, hire a licensed electrician. Installing the wrong breaker can create a serious fire or shock hazard.
Pros
- Good choice for standard 15 amp Siemens-compatible branch circuits
- Plug-in design makes it straightforward for qualified installers
- Red trip indicator helps with faster troubleshooting
- Compatible with Siemens, Murray, and select other listed panels
- Common replacement option for maintaining existing electrical panels
Cons
- Not universal; must match the panel’s approved breaker list
- Does not provide AFCI or GFCI protection
- Not suitable for 20 amp circuits or larger wire/circuit requirements
- Not a tandem or two-pole breaker
- Electrical work may require a licensed professional or permit
This guide is written to help compare fit, function, and compatibility. Purchase options may be added separately, and we may earn a commission from qualifying purchases.
| Product | Best for | Amps | Poles | Key feature | Watch out for |
|---|---|---|---|---|---|
| Siemens Single-Pole Plug-In Circuit Breaker 15 Amp | Standard Siemens-compatible 15 amp branch circuits | 15 amps | Single-pole | Red trip indicator flag for easier diagnostics | Panel compatibility and code requirements must be confirmed |
How we chose
Because this guide focuses on one catalog product, we evaluated the Siemens Q115 based on the criteria that matter most when choosing a replacement circuit breaker: panel compatibility, amperage, pole configuration, circuit protection type, diagnostic features, and appropriate use cases.
We prioritized compatibility guidance because breakers are not interchangeable simply because they appear to snap into place. A correct breaker should match the panel label, the circuit amperage, the conductor size, and the type of protection required for that circuit. For the Q115, that means it is best considered when a Siemens-compatible 15 amp, single-pole plug-in breaker is specifically appropriate.
We also considered everyday usability. The Q115’s red trip indicator is a practical feature for homeowners and service technicians because it can make a tripped breaker easier to identify. That does not replace proper troubleshooting, but it does make routine diagnostics more convenient.
Final verdict: Siemens Q115 is right for compatible 15 amp circuits
Choose the Siemens Q115 if your panel label allows it and your circuit calls for a standard 15 amp single-pole breaker. Skip it if the circuit requires AFCI, GFCI, dual-function protection, a different amperage, or a different breaker format.
Is the Siemens Q115 a 15 amp breaker?
Yes. The Siemens Q115 is a 15 amp single-pole circuit breaker, typically used for standard 120-volt residential branch circuits where a compatible 15 amp breaker is required.
Will the Siemens Q115 fit any electrical panel?
No. It should only be used in panels where the Q115 or its approved breaker type is listed on the panel labeling. It is commonly associated with Siemens-compatible panels and may be allowed in certain Murray or related panels, but the panel label is the authority.
Does the Siemens Q115 provide GFCI or AFCI protection?
No. The Q115 provides standard overload and short-circuit protection. If your circuit requires GFCI, AFCI, or dual-function protection, you need the correct breaker or device designed for that purpose.
What does the red trip indicator mean?
The red trip indicator flag shows that the breaker has tripped. This helps identify the affected circuit, but the cause of the trip should still be investigated before simply resetting the breaker.
Can I replace a 20 amp breaker with a Siemens Q115?
Not as a simple swap. Breaker amperage must match the circuit design, wire size, receptacle requirements, and code rules. If a circuit currently has a 20 amp breaker, consult a licensed electrician before changing it to a 15 amp breaker.
