Square D XO120 Miniature Circuit Breaker
- 20A
- 1 Pole
- Plug-On
Quantity
Square D XO120 - 20A 1 Pole Miniature Circuit Breaker
Re-Certified
Quantity
Description
Engineered for residential applications, the Square D XO120 provides essential overcurrent protection for standard household circuits. This miniature plug-on breaker delivers 20 amps of capacity at 120VAC to safeguard wiring. Designed as a reliable replacement, this unit mounts seamlessly into vintage Square D and Cutler-Hammer XO series load centers. The plug-on configuration ensures a secure connection to the panel bus. This model carries a Switching Duty (SWD) classification for lighting.Specifications
| Brand | Square D |
|---|---|
| Part Number | XO120-R |
| Series | XO |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | Plug-On |
| Voltage | 120VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC |
| Terminal Type | Screw/Clamp Terminal |
|---|---|
| For Use With | Square D XO Load Centers, Cutler-Hammer XO Load Centers |
| Wire Gauge | 14-8 AWG |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Accessories | Lugs Not Included |
|---|---|
| Standards | UL 489 |
| Approval | UL |
| Temp Rating | 40°C |
| Construction Features | SWD Rated, HACR Rated |
Product FAQs
6 answersCan I use a modern Square D QO breaker in place of an XO120?
No. Square D QO breakers have a different physical footprint and mounting mechanism. They are not interchangeable with the older XO series breakers.
Which load centers accept the XO120 circuit breaker?
This breaker is designed exclusively for legacy Square D XO and Cutler-Hammer XO load centers.
Are Cutler-Hammer XO breakers and Square D XO breakers the same?
Yes. Cutler-Hammer acquired the rights to the XO line from Square D. XO breakers from both brands share the exact same physical footprint and fit into the same vintage XO panels.
Is the Square D XO series still in active production?
No. The XO series is an obsolete legacy product line that was replaced by the QO series decades ago. Replacements are sourced from existing vintage stock.
Does the XO120 require mounting screws to attach to the busbar?
No. It features a plug-on connection specific to the XO frame, allowing it to clip directly onto the busbar of compatible vintage load centers without bolt-on hardware.
Can the XO120 be used to add two circuits in one slot?
No. The XO120 is a standard full-size, single-pole breaker designed for one circuit. It is not a tandem or piggyback breaker.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 5 reviews.
- VSVenetia S.ReviewingSquare D XO120 - 20A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars5/26/21Square D X0120
Great customer service, this breaker arrived the very next day and was exactly what I ordered!
- JSJoseph S.ReviewingSquare D XO115 - 15A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/24/20Refurbished Circuit Breaker works great!
They had it here fast, exactly as described and worked!
- CChristopherReviewingSquare D XO220 - 20A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars6/17/20Great!!
Product was as described and packed very well.
- CChristopherReviewingSquare D XO115 - 15A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/23/19Square D xo15
I ordered 3 xo15 breakers from another company that advertised them as new and since they're obsolete breakers they were quit expensive however when i received them only one was new the other two were obviously used, corroded and missing the wire screw. SuperBreakers sent me New Breakers at a much better price. Happy customer
- TBTerry B.ReviewingSquare D XO115 - 15A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars11/11/18Online purchase
Everything went great from beginning to end. Breaker came next day and I had electricity again! Not to mention my breaker was an old obsolete model. They had it in stock. Saved me from replacing while breaker box.