Square D QOB230VH-1021 QOB230VH1021 - 30A 2 Pole Miniature Circuit Breaker
- 30A
- 2 Pole
- Bolt-On
Quantity
Square D QOB230VH1021 - 30A 2 Pole Miniature Circuit Breaker
New
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Description
Part of the QO series, the Square D QOB230VH-1021 is a 30A, two-pole miniature circuit breaker designed for commercial environments. It delivers thermal-magnetic protection for 120/240VAC systems. This model features a secure bolt-on mounting mechanism for compatibility with Square D NQ and NQOD panelboards. The standout feature is its factory-installed 120/208/240VAC shunt trip, enabling remote tripping for enhanced control. It provides a 22kAIC rating and includes a Visi-Trip indicator.Specifications
| Brand | Square D |
|---|---|
| Part Number | QOB230VH-1021 |
| Series | QOB |
| Amperage | 30A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 120/240VAC |
| Phase | 1 |
| AIC Rating | 22kA @ 240VAC, 22kA @ 120/240VAC |
| Terminal Type | Pressure Plate |
|---|---|
| For Use With | NQ Panelboards, NQOD Panelboards |
| Wire Gauge | 14-8 AWG (Al/Cu) |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Shunt Trip (Factory Installed) |
| Standards | HACR, UL 489, CSA C22.2 No. 5 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, High Interrupting Capacity |
Product FAQs
6 answersWhat does the -1021 suffix indicate on this circuit breaker?
The -1021 suffix denotes a factory-installed 120/240VAC shunt trip. This accessory allows the breaker to be opened remotely via a control signal, which is commonly used for emergency stops or automated load shedding.
What is the difference between a standard QOB230 and the QOB230VH-1021?
The VH designation indicates a high-interrupting capacity. While a standard QOB breaker offers a 10kAIC rating, the QOB230VH-1021 provides a 22kAIC rating at 240V for systems with higher available fault current. Additionally, this specific model includes the shunt trip accessory.
Can I install the QOB230VH-1021 in a standard Square D QO load center?
No. This is a QOB series breaker with a bolt-on mounting design, intended specifically for NQ and NQOD panelboards. Standard residential QO load centers require plug-on breakers.
How can I visually identify if the QOB230VH-1021 has tripped?
This breaker features Square D Visi-Trip technology. When a fault causes the breaker to trip, a bright red indicator appears in the window, allowing for quick identification in a crowded panelboard without needing to test each breaker manually.
How does the thermal-magnetic trip unit function in this breaker?
The thermal component provides a delayed response to safely handle temporary overloads, while the magnetic component provides an instantaneous trip to protect the circuit from severe short circuits.
Is the QOB230VH-1021 suitable for HVAC applications?
Yes, this breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment that requires this specific certification.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 205 reviews.
- 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.
- RKRyan K.Verified BuyerReviewingSquare D QOB230VH - 30A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/1/26Awesome
Worked great