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Square D QOB230AS Miniature Circuit Breaker
- 30A
- 2 Pole
- Bolt-On
Square D
QOB230AS
Miniature Circuit Breaker
Brand
Square D
SKU
QOB230AS
Quantity
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Square D QOB230AS - 30A 2 Pole Miniature Circuit Breaker
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Description
Designed for automated energy management, the Square D QOB230AS combines thermal-magnetic protection with remote switching. This 30A, two-pole breaker is ideal for lighting control. It mounts into Square D NQ, NQOD, and Powerlink AS panelboards. The bolt-on connection is secure, and the 24VDC operator interfaces with Powerlink networks. Delivering a 10 kAIC rating at 120/240 VAC, this HACR-rated unit features a Visi-Trip indicator to easily spot tripped circuits.Specifications
| Brand | Square D |
|---|---|
| Series | QOB |
| Amperage | 30A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 120/240VAC, 48VDC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC, 10kA @ 120/240VAC, 5kA @ 48VDC |
| Frame Type | QOB |
|---|---|
| Terminal Type | Pressure Plate |
| For Use With | NQ Panelboards, NQOD Panelboards, Powerlink Systems |
| 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 |
|---|---|
| Accessories | 24VDC Remote Operator (Factory Integrated) |
| Standards | CSA C22.2 No. 5, UL 489, HACR |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Remote Switching |
| Special Features | Remotely Operated |
Product FAQs
8 answersWhat does the "AS" suffix mean in the QOB230AS catalog number?
The "AS" suffix indicates this is an Automated Switch breaker designed for remote switching applications. It features a built-in 24VDC operator that interfaces with Square D Powerlink AS lighting control systems, allowing for automated energy management alongside standard thermal-magnetic overcurrent protection.
Which panelboards accept the QOB230AS circuit breaker?
This bolt-on breaker is engineered for Square D NQ panelboards, legacy NQOD panelboards, and Powerlink AS lighting control systems. It is not compatible with residential QO or Homeline load centers, which require plug-on connections.
What wire gauges are supported by the QOB230AS terminals?
The pressure plate terminals on this 30-amp breaker accept either aluminum or copper wire ranging from 14 AWG to 8 AWG.
Is the QOB230AS rated for direct current systems?
Yes, this breaker carries a 48VDC rating with a 5 kAIC interrupting capacity, making it suitable for specific low-voltage DC control or power circuits in addition to its standard 120/240VAC rating.
How does the bolt-on connection of the QOB230AS differ from standard QO breakers?
Unlike QO breakers that snap onto the bus, the QOB230AS uses a bolt-on mounting style. It fastens directly to the panelboard bus with a screw, providing a secure, vibration-resistant connection required in many commercial and industrial specifications.
How does the Visi-Trip feature assist with troubleshooting?
The QOB230AS includes Square D's standard Visi-Trip indicator. When the breaker trips due to an overload or short circuit, a highly visible red flag appears in the indicator window, allowing maintenance personnel to quickly identify the tripped circuit in a crowded panel.
Is the QOB230AS suitable for HVAC equipment?
Yes, this breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment that requires group motor installation protection.
What type of trip mechanism does the QOB230AS utilize?
This breaker uses a fixed thermal-magnetic trip unit. It provides a long-time delay for overload protection and an instantaneous trip function to clear short circuits quickly.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 205 reviews.
Reviews Summary
Generated by AI from 100 most recent customer reviews
Last updated 3/11/26
Customers say these electrical breakers arrive exactly as ordered and work perfectly for their intended applications. They consistently praise the competitive pricing, which many report is significantly lower than local suppliers. Fast shipping and prompt delivery are frequently highlighted, with many receiving orders within days or even next-day delivery for urgent needs. The breakers arrive well-packaged and in excellent condition. Many reviews emphasize the company's extensive inventory availability, particularly for hard-to-find breakers. One customer experienced difficulty with order cancellation and was charged a restocking fee, which caused dissatisfaction.
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Rating
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