Square D QOM 2-Pole Main Circu...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$217.37
Square D QOM 2-Pole Main Circuit Breaker, 120/240VAC

Square D QOM 2-Pole Main Circuit Breaker, 120/240VAC

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Model: QOM22225NS

In Stock (leaves warehouse same day if ordered before 3pm ET)

$217.37
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Square D QOM 2-Pole Main Circuit Breaker, 120/240VAC

The Square D QOM 2-Pole Main Circuit Breaker is engineered for use with metering devices, delivering reliable overcurrent protection and switching on ac systems. Rated 120/240VAC with a 22kA interrupting rating, this bolt-on breaker is available across a Motor FLA range from 100-225A, with 200A as one of the standard configurations, so installers can match the rating to the panel's protection requirements. Part of the QO range, it is UL Listed and CSA certified for code-compliant residential installations.

Key Features

  • Configuration: 2-pole (2P) main breaker designed for metering devices with bolt-on mounting.
  • Electrical Rating: 120/240VAC operational voltage with a 22kA interrupting rating for dependable overcurrent protection.
  • Motor FLA Range: Offered from 100-225A, including a 200A configuration, to suit a range of load center protection needs.
  • Wire Range: Accepts AWG 4...300 kcmil copper or aluminum conductors with a tightening torque of 6-6 N.m (AWG 12...AWG 2/0).
  • Connection Type: Lug connection for straightforward termination.
  • Trip Mechanism: Over-center, trip-free toggle with quick-make, quick-break action for positive contact operation.
  • Plug-On Neutral Design: Shorter footprint for faster panel installs.
  • Enclosure Material: Steel construction.
  • Application: Functions as a primary main breaker on 1 phase systems.

Certifications & Compliance

  • UL Listed
  • CSA Certified
  • RoHS EU In Scope
  • Green Premium Product

Technical Specifications

  • Standards: CSA
  • Series: QO
  • Country of Origin: Mexico
  • Toxic Heavy Metal Free: Yes
  • Warranty: 18 months
  • Sustainable Packaging: No
  • Mercury Free: Yes
  • Packaging Without Single Use Plastic: No
  • ROHS Eur In Scope: Yes
  • Recycled Metal Content At Cr Level: 0 %
  • Poles Description: 2P
  • Serviceability: No
  • Range Of Product: QO
  • Returnability: Yes
  • Legacy WEEE Scope: In
  • Circuit Breaker Application: Primary main breaker
  • Electrical Connection: Lugs
  • Phase: 1 phase
  • Motor FLA Range: 100-225A (includes 200A)

Typical Applications

  • Residential Load Center Main Breaker Installations
  • Metering Device Panel Applications
  • AC Overcurrent Protection Systems
  • Panelboard and Load Center Wiring
  • New Construction and Renovation Electrical Panels

Why Square D?

Square D QO circuit breakers are engineered with steel enclosures, halogen-free plastic parts, and Green Premium reporting status, reflecting a commitment to durable, code-compliant construction. Backed by an 18-month warranty and UL Listed / CSA certification, this main breaker series delivers dependable overcurrent protection for residential metering applications across its full Motor FLA range.

Manufacturer Resources

Product Specs

Product Type:
Circuit Breaker
Configuration:
2-Pole
Voltage Rating:
120/240VAC
Listing:
UL Listed
Standards:
CSA
Series:
QO
Connection Type:
Lugs
Product Material:
Steel
Department:
Electrical
Product Group:
Circuit Protection
Product Subgroup:
Circuit Breakers

Square D QOM22225NS – Frequently Asked Questions

1) Will the Square D QOM main breaker work on a 120/240V single-phase residential panel?
That is exactly what it is built for. The QOM 2-pole main breaker is rated 120/240VAC single phase and serves as the primary main breaker in a load center or metering device panel. It will not serve a 3-phase service; for 3-phase work you need a 3-pole molded case device instead.
2) Is 22kA enough interrupting rating for a residential service main?
The QOM main carries a 22kA interrupting rating at 120/240VAC, which is well above the 10kA typical of standard residential branch devices and covers services with higher available fault current, such as those close to a utility transformer. Confirm the available fault current at your service point against that 22kA figure.
3) What is the difference between the QOM2200MVH and the QOM22225NS?
Both are 2-pole QO main breakers for 120/240VAC. The QOM2200MVH is the fixed 200A configuration; the QOM22225NS covers the 100-225A range. Pick the one that matches the ampacity your load center and service conductors are sized for.
4) Is the Eaton BAB1010 bolt-on breaker an alternative to a Square D QOM 2-pole main breaker?
No. The QOM is a 2-pole primary main breaker rated 120/240VAC that lands the incoming service on lugs and is sized across a 100-225A motor FLA range. The Eaton BAB1010 is a BAB series Quicklag thermal-magnetic bolt-on branch breaker, so it protects an individual branch circuit rather than acting as the panel main. Use the QOM for the service disconnect position and a branch-rated device for the load side.
5) I need a 3-pole main for a three-phase panel - will the Square D QOM work?
No. The QOM is a 2-pole device for 1-phase 120/240VAC service. For 3-pole molded case applications, look at 3-pole molded case breakers such as the ABB A2A150TT in the A2 series, or the XT4 and XT5 series 3-pole kits (ABB MBB33 and MBM334). Those are molded case devices rather than load center mains, so confirm the panel accepts them.
6) Can I use a QOM main breaker as a branch breaker in a panel?
No. The QOM is a main device, intended as the primary main breaker for load centers and metering equipment on single-phase systems. For branch circuits in a panelboard you want a standard branch breaker, such as an Eaton BAB Quicklag bolt-on thermal-magnetic unit for 240V applications.
7) Is the Square D QOM breaker UL Listed and CSA certified for inspection?
Yes, UL Listed and CSA certified, with RoHS EU in-scope and Green Premium status. That satisfies the listed-equipment requirement an inspector looks for on a residential service main.
8) What is the difference between the Square D QOM main breaker and an ABB ST200M miniature breaker?
They serve different positions in the system. The QOM is a 2-pole main breaker for 120/240VAC load centers and metering devices, UL Listed and CSA certified, with lug terminations sized for AWG 4 through 300 kcmil copper or aluminum. The ABB ST200M is a C-curve miniature circuit breaker built to UL1077, which is a supplementary protection standard rather than a branch or service protection standard. Choose the QOM where the device must serve as the service main.
9) Can I use a Bussmann CBC or CBF breaker in place of a Square D QOM?
No. The Bussmann CBC series is a Type I automotive circuit breaker rated 14VDC, and the CBF is a Type II automotive breaker; both are vehicle and DC low-voltage devices. The Square D QOM is a 120/240VAC AC main breaker with a 22kA interrupting rating for residential load centers and metering panels. They are not interchangeable in any panel application.
10) We need an adjustable-trip main for a heavy industrial feeder - is the QOM the right choice?
The QOM uses a fixed over-center, trip-free toggle mechanism and is intended as a primary main breaker on 1-phase 120/240VAC systems. Where the application calls for a frame breaker with a changeable trip setting, the Eaton Series C K-Frame 400A 3-pole breaker uses an interchangeable rating plug. That is a 3-pole device, so it suits three-phase feeders rather than a single-phase residential service.
11) How does the QOM trip mechanism behave if someone holds the handle on?
It uses an over-center, trip-free toggle with quick-make, quick-break action. Trip-free means the contacts will open on an overcurrent even if the handle is held in the ON position, and the quick-make/quick-break movement is independent of how fast the operator moves the toggle.
12) What is the QOM breaker made of, and will it hold up in a utility room or garage panel?
Construction is steel, with halogen-free plastic parts, and it is mercury and toxic heavy metal free. It is a dry-location panel component, so it depends on the enclosure it is installed in for environmental protection. Country of origin is Mexico.
13) Can the QOM main breaker be repaired or have parts replaced in the field?
No. Square D lists the QOM as non-serviceable, so a tripped-and-failed unit is replaced, not rebuilt. If you need a breaker with field-changeable trip settings, that is a molded case frame like the Eaton Series C K-Frame, which uses an interchangeable rating plug.
14) Is an Eaton BAB-302 three-pole Quicklag breaker a substitute for the QOM in a 240V panel?
Not for the main position. The BAB-302 is a three-pole industrial thermal-magnetic Quicklag breaker rated 240V, which suits three-phase branch loads. The Square D QOM is a 2-pole lug-connected main breaker for 1-phase 120/240VAC service and is the device that takes the incoming feeders.
15) Does the Square D QOM come with an undervoltage release like the Eaton NZM accessory?
The QOM is supplied as a 2-pole main breaker with an over-center, trip-free toggle and lug terminations; it is a self-contained device rather than an accessorized frame. The Eaton 10250T series part is an undervoltage release accessory for NZM series molded case breakers, so it applies to that frame family and not to a QO load center main.
How fast can I get the Square D QOM22225NS delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Square D QOM22225NS come with a warranty?
Absolutely. The Square D QOM22225NS is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Square D QOM22225NS?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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