Square D QO2000 Miniature Circuit Breaker
- 100A
- 2 Pole
- Plug-On
Quantity
Square D QO2000 - 100A 2 Pole Miniature Circuit Breaker
New
Quantity
Description
Built for manual switching applications, this 100A two-pole non-automatic switch operates without thermal-magnetic trip elements to serve as a dedicated disconnect. It mounts into Square D QO load centers and NQ panelboards using a standard plug-on connection, accommodating 4 AWG to 2/0 AWG wire sizes. While it does not provide overcurrent protection, the unit retains the signature Visi-Trip indicator and common trip functionality found in standard QO series breakers.Specifications
| Brand | Square D |
|---|---|
| Part Number | QO2000 |
| Series | QO |
| Amperage | 100A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | QO |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | QO Load Centers, NQ Panelboards |
| Wire Gauge | 4 AWG - 2/0 AWG (Al/Cu) |
| Max Wire | 2/0 AWG |
| Min Wire | 4 AWG |
| Available Options | Padlock Attachment |
|---|---|
| Standards | CSA C22.2 No. 5, UL 489, UL 1087 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Non-Automatic (Disconnect), Visual Trip Indicator, Common Trip |
Product FAQs
7 answersWhat does NA mean in the QO2000 product description?
NA stands for non-automatic. The QO2000 is a molded case switch that serves as a manual disconnect. It does not have thermal-magnetic trip elements and provides no overcurrent protection.
Will the QO2000 trip during an overload or short circuit?
No. Because it is a non-automatic switch, it lacks a trip mechanism for overcurrent conditions. The circuit must be protected by an appropriately sized upstream circuit breaker or fuse.
What panelboards accept the QO2000 disconnect switch?
This plug-on switch is compatible with Square D QO load centers and NQ panelboards. It cannot be installed in Homeline or competitor panels.
How many panel spaces does the QO2000 occupy?
The QO2000 requires two standard 3/4-inch spaces in a QO or NQ bus assembly.
Can I use the QO2000 as a main disconnect?
Yes, it is frequently used as a main or subfeed disconnect in compatible enclosures, provided that the system has proper upstream overcurrent protection.
Is there a bolt-on equivalent for the QO2000?
Yes, the QOB2000 is the bolt-on equivalent designed for use in NQ panelboards that require bolt-on connections.
What is the difference between the QO2000 and the QO2100?
The QO2000 is a non-automatic switch used only as a manual disconnect, meaning it will not trip during an overload or short circuit. The QO2100 is a standard thermal-magnetic circuit breaker that provides full overcurrent protection.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 285 reviews.
- GCGerard C.Verified BuyerReviewingSquare D QO130GFI - 30A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/21/26Great !
I could not find the breaker in hardwood stores. Superbreakers took car of it in a week.
- RHRoy H.Verified BuyerReviewingSquare D QO280 - 80A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/17/26Square D QO280 - 80A 2 Pole Miniature Circuit Breaker
Exactly as described
- KWKevin W.Verified BuyerReviewingSquare D QO120 - 20A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/15/26Great Price
Brand spanking new!
- CEchristopher e.Verified BuyerReviewingSquare D QO115PDF - 15A Dual Function Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/11/26My breakers
Had a hard time locating these breakers locally, when I did find 1 they wanted to charge me triple what superbreakers charged. Items delivered exactly when they said they would, were exactly what I ordered. Appreciated the ease of ordering, definitely my go to from this point on
- JCJerry C.Verified BuyerReviewingSquare D QO250 - 50A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/8/26Great quality
No issues