Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Square D QOB325 Miniature Circuit Breaker
- 25A
- 3 Pole
- Bolt-On
Square D
QOB325
Miniature Circuit Breaker
Brand
Square D
SKU
QOB325
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Square D QOB325 - 25A 3 Pole Miniature Circuit Breaker
New
Quantity
Quantity
Square D QOB325 - 25A 3 Pole Miniature Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | QOB325 |
| Series | QOB |
| Amperage | 25A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 240VAC, 120/240VAC, 48VDC |
| Phase | 3 |
| AIC Rating | 10kA @ 120VAC, 10kA @ 240VAC, 10kA @ 120/240VAC, 5kA @ 48VDC |
| Terminal Type | Pressure Plate |
|---|---|
| For Use With | Square D NQ Panelboards, Square D NQOD Panelboards |
| Wire Gauge | 14-8 AWG (Cu/Al) |
| 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 | Padlock Attachment |
|---|---|
| Accessories | Visi-Trip Indicator |
| Standards | UL 489, CSA C22.2 No. 5, HACR, NEMA AB 1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Common Trip |
Sold out
Quantity
Square D QOB325 - 25A 3 Pole Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | QOB325-R |
| Series | QOB |
| Amperage | 25A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 240VAC, 120/240VAC, 48VDC |
| Phase | 3 |
| AIC Rating | 10kA @ 120VAC, 10kA @ 240VAC, 10kA @ 120/240VAC, 5kA @ 48VDC |
| Terminal Type | Pressure Plate |
|---|---|
| For Use With | Square D NQ Panelboards, Square D NQOD Panelboards |
| Wire Gauge | 14-8 AWG (Cu/Al) |
| 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 | Padlock Attachment |
|---|---|
| Accessories | Visi-Trip Indicator |
| Standards | UL 489, CSA C22.2 No. 5, HACR, NEMA AB 1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Common Trip |
Similar Items
30A 3 Pole Miniature Circuit Breaker
30A 3 Pole Miniature Circuit Breaker
QOB3301021 - 30A 3 Pole Miniature Circuit Breaker
Description
Part of the QO family, the Square D QOB325 is a three-pole, 25-amp miniature circuit breaker designed for reliable commercial and industrial power distribution. It provides thermal-magnetic overcurrent protection with a 10kAIC rating at 240VAC. This unit bolts securely into Square D NQ and NQOD panelboards, ensuring a stable connection. It accepts 14-8 AWG copper or aluminum wiring and is HACR rated for HVAC applications.Specifications
| Brand | Square D |
|---|---|
| Part Number | QOB325 |
| Series | QOB |
| Amperage | 25A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 240VAC, 120/240VAC, 48VDC |
| Phase | 3 |
| AIC Rating | 10kA @ 120VAC, 10kA @ 240VAC, 10kA @ 120/240VAC, 5kA @ 48VDC |
| Terminal Type | Pressure Plate |
|---|---|
| For Use With | Square D NQ Panelboards, Square D NQOD Panelboards |
| Wire Gauge | 14-8 AWG (Cu/Al) |
| 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 | Padlock Attachment |
|---|---|
| Accessories | Visi-Trip Indicator |
| Standards | UL 489, CSA C22.2 No. 5, HACR, NEMA AB 1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Common Trip |
Product FAQs
7 answersCan I install this QOB325 circuit breaker in a standard QO load center?
No. The QOB325 features a bolt-on mounting style designed specifically for NQ and NQOD panelboards. If you need a plug-on equivalent for a standard residential or commercial QO load center, you will need the QO325 catalog number.
Will the QOB325 fit older generation NQOD panelboards?
Yes, this breaker is fully compatible with legacy Square D NQOD panelboards, as well as current generation NQ series panelboards.
Is there a version of this 25A bolt-on breaker with a higher interrupting rating?
Yes. If your electrical system requires a higher fault current rating than the standard 10kAIC, you can use the QOB325VH, which provides a 22kA interrupt rating at 240VAC.
Is this 3-pole miniature circuit breaker approved for HVAC equipment?
Yes. The QOB325 is HACR rated, meaning it is safety certified for use with heating, air conditioning, and refrigeration equipment.
How does the Visi-Trip indicator function on this Square D breaker?
The built-in Visi-Trip indicator displays a highly visible red flag in the window when the breaker trips. This feature allows electricians and maintenance personnel to quickly identify a faulted circuit in a crowded panelboard, easily distinguishing it from breakers that are manually switched off.
Why choose a bolt-on breaker over a plug-on design?
Bolt-on breakers secure directly to the panelboard busbar using a mechanical fastener. This creates a highly robust, vibration-resistant electrical connection, making it the preferred mounting style for demanding commercial and industrial applications.
How does the integrated pressure plate terminal protect the wiring?
The pressure plate terminal is designed to compress evenly across the exposed conductor. This provides a strong, secure termination while preventing the terminal screw from cutting into or damaging the individual strands of flexible wiring.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.
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.
Search
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