What does QO mean on a breaker?

These “Qwik-Open” or QO breakers are the fastest opening breakers in use in the industry. They reportedly open after just one full power cycle of a 60 Hz AC line (about 1/60th of a second). These breakers feature a visual trip indicator and make it easy to quickly spot the tripped breaker in the panel.

What breakers work with Square D QO?





In short, Square D compatible breakers are Siemens, Cutler Hammer, Eaton, GE Breaker, Murray, Westinghouse, and Home Fitline. Are Homeline and QO Breakers Interchangeable?



Square D Homeline Compatible Breakers.

Square D Compatibility Table
Siemens Compatible
Westinghouse Compatible
Home Fitline Compatible
QO Incompatible

Can you use Homeline breakers in a QO panel?

These circuit breakers are used for overload and short-circuit protection of your electrical system. Square D Homeline breakers are compatible with Homeline breaker boxes and CSEDs. Square D QO breakers are compatible with QO breaker boxes and CSEDs.

What is a QOT breaker?

The QOT circuit breaker is two single pole thermal-magnetic circuit breakers manufactured in tandem to occupy only one QO pole space. Each single pole QOT circuit breaker provides an individual switching and tripping action.

What does a QO breaker look like?

Quote from the video:
Quote from Youtube video: The home lines have a 1 inch purple size and then also you'll notice that the qo tu pô breaker. Will have a single handle on one of their two poles whereas. The home lines have a handle for each bowl.

Are QO breakers better than homeline?





Homeline is the “price competitive” model from SquareD, QO is the higher quality panel. The difference is probably mostly due to historical reasons given all the consolidations in the electrical manufacturing industry.

Are there two different types of Square D QO breakers?

Apparently, there are three types of Square D circuit breakers. These breakers are the Homeline, QO, and QOB breakers.

Are QO breakers switch rated?

Switching Duty (SWD) Circuit Breakers



QO and QOB circuit breakers are suitable for switching 120 Vac fluorescent lighting loads. The switching duty (SWD) listing applies only to one-pole 15 and 20 A circuit breakers rated at 347 Vac or less.

Are QO and QOB breakers interchangeable?

A QO breaker is plug on mounting and can be used in QO load centers, old NQO and NQOD panelboards, and current NQ panelboards. A QOB breaker uses a bolt on connection to the bus and can be used in old NQOB and NQOD panelboards and current NQ panelboards. Otherwise the breakers are the same.

Does QOT fit in QO panel?



Resolution: NOTE: NONE of the current Plug-on Neutral(PoN) design load centers will accept the QOT(CTL) type tandem breakers, they can ONLY use the Old Style QO (NON-CTL) type tandem breakers. The current QO PoN type load centers will have a suffix ‘P’ in the catalog number.

Are QO breakers thermal magnetic?

QO® Circuit Breakers



QO® (plug-on) one-, two- and three-pole thermal-magnetic circuit breakers provide overcurrent protection and switching on ac and dc systems.

How many tandem breakers are allowed on a QO panel?

The model of the panelboard



G3040BL1200 = 30 spaces, 40 total circuits allowed. Up to 10 tandem circuit breakers can be used.

What does a Square D QO breaker look like?



Quote from the video:
Quote from Youtube video: They have the branch neutrals look and all the way down the interior of the wood Center. The newer construction plug on neutral home line load centers have every spot tan demised whereas on the kilos.

Are QO breakers bolt on?

Product Details. The Square D by Schneider Electric QO 20 Amp One-Pole Bolt-On Circuit Breaker is intended for overload and short-circuit protection of your electrical system. The ANSI-certified and UL-listed unit is rated for 120/240 VAC, 10,000 AIR and bolt-on installation.

Is QO compatible with homeline?

Is it possible to use a Homeline breaker on a QO Load Center? Resolution: No, the panels are of different designs.

Can you use other breakers in Square D panel?

Manufacturers like Square D warns against the use of Classified and interchangeable breakers. They site the National Electrical Code (NEC) Section 110-3(b), which states that using breakers not listed or labeled is a code violation.

Can you use a Siemens breaker in a Square D box?



The Siemens Type QD circuit breakers have been classified by UL for use in place of the Square D Type QO® listed circuit breakers in the Square D UL listed panelboards shown below.

Are Square D and Schneider breakers the same?

Square D is an American manufacturer of electrical equipment headquartered in Andover, Massachusetts. Square D is a flagship brand of Schneider Electric, which acquired Square D in 1991. U.S.

Did Square D go out of business?

In 1997, Square D closed its last manufacturing plant in Milwaukee, moving the work to Monroe, North Carolina and eliminating another 159 jobs. Also taking a hit in 1997 was Square D’s Huntington, Indiana plant.

Is Square D owned by Eaton?

The answer is simple: the same company owns the production rights for both Eaton and Westinghouse. Westinghouse had a low-voltage air circuit breaker line. The company sold the rights to this product line to Square D, which then sold it to Eaton Corporation.