Square D QOB2100VH-1021 QOB2100VH1021 - 100A 2 Pole Miniature Circuit Breaker
- 100A
- 2 Pole
- Bolt-On
Quantity
Square D QOB2100VH1021 - 100A 2 Pole Miniature Circuit Breaker
New
Quantity
Description
Part of the QO family, the QOB2100VH-1021 combines thermal-magnetic protection with remote functionality. This 100A breaker is ideal for facilities needing emergency shutdown capabilities. The unit installs into Square D NQ and NQOD panelboards via a secure bolt-on mechanism. It accommodates 4 AWG to 2/0 AWG wiring for reliable branch connections. A factory-installed 120/240V shunt trip allows the breaker to be opened remotely. It features a 22 kAIC rating and a Visi-Trip indicator.Specifications
| Brand | Square D |
|---|---|
| Part Number | QOB2100VH-1021 |
| Series | QOB |
| Amperage | 100A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 120/240VAC, 48VDC |
| Phase | 1 |
| AIC Rating | 22kA @ 240VAC, 22kA @ 120/240VAC, 5kA @ 48VDC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | NQ Panelboards, NQOD Panelboards |
| Wire Gauge | 4 AWG - 2/0 AWG (Cu/Al) |
| Max Wire | 2/0 AWG |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Accessories | Shunt Trip |
| Standards | CSA C22.2 No. 5, UL 489, HACR |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, High Interrupting Capacity |
Product FAQs
5 answersWhat does the -1021 suffix indicate on the QOB2100VH1021 breaker?
The -1021 suffix means this breaker includes a factory-installed 120/208/240VAC shunt trip accessory, allowing the circuit to be opened remotely via a control signal.
Which panelboards are compatible with the QOB2100VH-1021?
This bolt-on breaker is designed for use in Square D NQ and NQOD series panelboards. It will not fit standard QO load centers, which require plug-on breakers.
What does the VH designation mean in the QOB2100VH-1021 catalog number?
The VH indicates a very high interrupting rating. This breaker is rated for 22kAIC at 240VAC, compared to the standard 10kAIC rating found on standard QOB breakers.
How does the QOB2100VH-1021 mount into the panelboard?
It features a bolt-on mounting design, which secures directly to the panelboard bus bar with screws for a robust connection in commercial and industrial applications.
Does this breaker feature a visual trip indicator?
Yes, Square D QOB breakers feature a Visi-Trip indicator that provides a clear visual flag when the breaker has tripped, making it easier to identify the faulted circuit.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 206 reviews.
- KHKristopher H.Verified BuyerReviewingSquare D QOB120GFI - 20A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/28/26Great Price!
Great price. Fast delivery. My local electric distributor wanted double for the same breaker, so it was a no brainer to order this one. Ordered another one since with the same great service.
- BLBOOSTIX L.Verified BuyerReviewingSquare D QOB220 - 20A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/17/26QOB220
That's nice breakers!
- PHPaul H.Verified BuyerReviewingSquare D QOB330 - 30A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/5/26Quick shipping and delivery
Shipped and delivered on time for installation at one of our projects. Thank you!
- RMRick M.Verified BuyerReviewingSquare D QOB220 - 20A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/3/26Project Mgr
Just what I needed.
- DHDoug H.Verified BuyerReviewingSquare D QOB220 - 20A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/3/26Square D QOB breakers
As always, our order arrived timely, and accurate. You can’t beat their prices that’s why we have used this company for years.