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Square D QOB225-1021 QOB2251021 - 25A 2 Pole Miniature Circuit Breaker
- 25A
- 2 Pole
- Bolt-On
Square D
QOB225-1021
QOB2251021 - 25A 2 Pole Miniature Circuit Breaker
Brand
Square D
SKU
QOB225-1021
Quantity
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Square D QOB2251021 - 25A 2 Pole Miniature Circuit Breaker
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Description
Built for advanced control, the Square D QOB225-1021 is a 2-pole, 25-amp miniature circuit breaker featuring a factory-installed 120/240VAC shunt trip. This allows users to remotely trip the breaker via an external signal for emergency stops. The device utilizes a rugged bolt-on mechanism for secure installation into Square D NQ and NQOD panelboards. Delivering a 10kAIC rating at 120/240VAC, this unit includes the exclusive Visi-Trip indicator for quick fault identification and is HACR rated.Specifications
| Brand | Square D |
|---|---|
| Part Number | QOB225-1021 |
| Series | QOB |
| Amperage | 25A |
| 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 |
| 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 |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator, HACR Rated, Common Trip |
Product FAQs
5 answersCan I install the QOB225-1021 in a standard Square D QO load center?
No. This is a QOB bolt-on breaker designed specifically for NQ and NQOD panelboards. Standard QO load centers require plug-on breakers.
What does the 1021 suffix indicate on the QOB225-1021 breaker?
The 1021 suffix denotes a factory-installed 120/240VAC shunt trip. This accessory allows the breaker to be opened remotely using an external control voltage signal, which is commonly used for emergency stop applications.
How does the QOB225-1021 connect to the panelboard busbar?
It utilizes a bolt-on connection, which is required for NQ and NQOD panelboards. This bolt-on design provides a secure, vibration-resistant mechanical and electrical connection.
How can I visually identify if the QOB225-1021 has tripped?
This breaker features the Square D Visi-Trip indicator. When a fault occurs and the breaker trips, a bright red flag appears in the indicator window, allowing for rapid identification of the tripped circuit in a crowded panelboard.
Is the QOB225-1021 suitable for direct current (DC) circuits?
Yes, in addition to its AC ratings, this thermal magnetic breaker is rated for DC applications up to 48VDC, providing 5kA of interrupting capacity for DC control or power circuits.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 212 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
212 reviews
- SJSheldon J. H.Verified BuyerReviewingSquare D QOB240 - 40A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/12/26Installer
Good price, worked great.
- MLMike L.Verified BuyerReviewingSquare D QOB250 - 50A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/9/26breaker orders
Breaker worked out great
Can not be happier with the quick shipping
- RCRichard C.Verified BuyerReviewingSquare D QOB380 - 80A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/7/26Great price quick turn around
Thank you for getting me the breaker in a timely fashion
- DSDarren S.Verified BuyerReviewingSquare D QOB250 - 50A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/5/26Airport taxi lighting
After contactor replacement we discovered bad breakers and were able to get replacements from Super Breakers in 2 days. THANK YOU SUPER BREAKERS..
- MRMiguel R.Verified BuyerReviewingSquare D QOB220GFI - 20A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/1/26Excellent
Excellent product and service