Are Siemens and Square D breakers interchangeable?

Asked By: Tawna El Mazani | Last Updated: 8th May, 2020
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Yes, Siemens makes what is called a "QD" Series breaker that is UL listed and "classified" to be used in a very specific list of Sq. D load centers. The list comes in the box with the breakers, but you CANNOT use them willy-nilly in place of QO breakers.

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Likewise, people ask, are homeline and Siemens breakers interchangeable?

Siemens manufactures a CLASSIFIED breaker that is suitable for replacement ONLY in certain Square D panels as indicated on the breaker literature. So I can install a SQ D Homeline in a Siemens panel.? There is no such thing as an interchangeable circuit breaker.

Also, are all Square D circuit breakers interchangeable? The circuit load will determine the breaker size you need – and you'll need to make sure to get the right brand, as all breakers are not interchangeable.

Also know, what breakers are compatible with Square D Homeline?

The Homeline breakers are made to fit in most "interchangeable" panels, such as GE, Bryant, Murray, ITE, etc. However, Square D added a small protrusion on their bus bars to reject those other breakers from being installed in the Homeline panels.

What breakers are compatible with Siemens QP?

The Siemens QP, QT, QAF, and QPF are the standard "interchangeable" plug-on type breakers used in loadcenters under several brand names including Siemens, Murray, Gould, and Sylvania to name the most common. It also fits most Midwest Power and Milbank Mfg metering equipment.

27 Related Question Answers Found

What breakers are compatible with Siemens panels?

The Cutler-Hammer "CL" breakers are classified for use in a Siemens panel.

What are the different types of Square D breakers?

  • Best Seller Square D Homeline 20 Amp Single-Pole Circuit Breaker.
  • Square D Homeline 20 Amp Single-Pole Plug-On Neutral Dual Function (CAFCI and GFCI) Circuit Breaker.
  • Square D Homeline 20 Amp Single-Pole Plug-On Neutral Combination Arc Fault Circuit Breaker.

Will Eaton breakers fit in a Siemens panel?

The straightforward answer is: read your panel for manufacturer's instructions on acceptable breaker replacements. This is a cross reference of Type CL 1” breakers that could be interchangeable for panel installations. Check under the Siemens column for compatible Eaton UL Classified breakers.

What does QP mean on a circuit breaker?

5. 8. Some research says that a QP circuit breaker is the 1" or 2" wide breakers that protect a 110V or 220V circuit respectively, and is made by Siemens. Square D is another manufacturer of circuit breakers and service panels.

Are QP and BR Breakers interchangeable?


There are many brands and types that are nearly identical, and appear to be interchangeable. However, installing a Cutler-Hammer type BR in a Siemens panel that specifies type QP will be in violation of the National Electrical Code, and may fail inspection -- even though it will fit and probably won't be a problem.

Is Eaton and Cutler Hammer the same?

Cutler-Hammer and the Eaton family of products are the same and compatible. Parts number have not changed, just the Eaton name has been placed on the product. For more on the Cutler Hammer brand click here Cutler Hammer Brand.

Are Square D breakers safe?

Square D Company is not aware of any injuries resulting from the problem with its product. The normal circuit breaker function is not affected by this problem. The Consumer Product Safety Commission believes GFCI's provide a significant level of electrical safety.

Will Square D breakers fit homeline?

Same Manufacturer, Different Breakers
For example, Square D makes both Q0 panels and Homeline panels, but each series of panels uses different breakers. Additionally, panels may specify one line of breakers for its branch circuits and a different type of breaker for its main breaker or service disconnect.

Who makes Square D breakers?

Schneider Electric

Will a Square D breaker fit in a Murray panel?


They are not interchangeable. They will fit but they are not listed for use in either panel.

What is the difference between Square D Homeline and QO breakers?

While the Homeline is a fine breaker, the QO has the fastest trip mechanism of any breaker.

What is a Square D QO breaker?

The Square D by Schneider Electric QO 20 Amp One-Pole Circuit Breaker is intended for overload and short-circuit protection of your electrical system. When a QO Visi-Trip circuit breaker trips, the handle snaps to a midpoint position between in. OFF in.

Are Eaton and Cutler Hammer breakers compatible?

The Eaton Cutler-Hammer 20 Amp 1 in. Single-Pole Type BR Replacement Circuit Breaker is designed to protect house wires from overheating or causing a short-circuit. The UL-listed breaker is compatible with Westinghouse, Challenger and Bryant load centers and has a maximum load of 240-Volt.

What does QO mean on a circuit breaker?

These letters refer to the way in which the miniature circuit breaker is mounted on the panel. QO = Plug-in (snaps in place, no bolted connection to the distribution board) QOB = Bolt-on (Note the bolts attached to the breaker)

What is a homeline breaker?


The Square D by Schneider Electric Homeline 20 Amp One-Pole Circuit Breaker is used for overload and short-circuit protection of your electrical system. This breaker is compatible with Homeline load centers and CSED devices.

How do you replace a Square D breaker?

Snap the clamps at the outside end of the new Square D switch onto the mounting rail. Plug the back end of the breaker switch into the bus bar connector. Replace the cover on the breaker box and tighten the screws. Turn the main power switch back on, and then turn on all the other breaker switches.

Can a 15 amp breaker be replaced with a 20 amp breaker?

The answer: It's possible, but not advisable without an electrician evaluating the situation. You should never just upgrade from a 15-amp breaker to a 20-amp one just because the current one is tripping. Otherwise, you may burn your house down via electrical fire.