Designed to support existing electrical infrastructure, the Square D XO220 miniature circuit breaker delivers reliable thermal-magnetic protection for residential branch circuits. Engineered for seamless compatibility, it installs into obsolete Square D and Cutler-Hammer XO load centers. The classic plug-on mounting style allows for quick replacement of failing components. It features a 10kAIC interrupt rating at 120/240VAC and a common trip mechanism for safety.
Square D XO Load Centers, Cutler-Hammer XO Load Centers
Wire Gauge
14-8 AWG
Max Wire
8 AWG
Min Wire
14 AWG
Protection and operation
Trip Technology
Thermal Magnetic
Trip Function Code
LI
Trip Function
Long-Time, Instantaneous
Trip Adjustability
Fixed
Standards and features
Standards
UL 489
Approval
UL
Temp Rating
40C
Construction Features
Common Trip
Product FAQs
6 answers
What load centers accept the XO220 circuit breaker?
The XO220 is engineered specifically for legacy Square D XO and Cutler-Hammer XO load centers. It will not fit modern QO or Homeline panels, as the XO frame utilizes a unique plug-on mounting configuration.
Can the Square D XO220 replace a Cutler-Hammer XO breaker?
Yes. Square D originally developed the XO series in the 1950s and later sold the manufacturing rights to Cutler-Hammer. As a result, XO breakers from both brands share the same physical footprint and are fully interchangeable in XO load centers.
Can the XO220 be used for dedicated 120V single-pole circuits?
No, the XO220 is a 2-pole breaker designed for 240V or 120/240V applications. For dedicated 120V single-pole circuits, a 1-pole breaker like the XO120 is required.
What type of trip mechanism does the XO220 use?
It utilizes a fixed thermal magnetic trip unit with long-time and instantaneous (LI) functions. This provides standard overload and short-circuit protection for 120/240VAC branch circuits up to its 10kAIC rating.
What wire gauges are compatible with the XO220 terminals?
The screw and clamp terminals on this 20A breaker accept wire sizes ranging from 14 AWG to 8 AWG.
Is the XO220 part of an active product line?
No, the XO frame is an obsolete legacy series. The XO220 is used strictly as a direct replacement component to service and maintain existing XO electrical panels, preventing the immediate need for a complete panelboard retrofit.
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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.
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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 5.0 out of 5 based on 5 reviews.
Square D XO120 - 20A 1 Pole Miniature Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
5/26/21
Square D X0120
Great customer service, this breaker arrived the very next day and was exactly what I ordered!
JS
Joseph S.
Reviewing
Square D XO115 - 15A 1 Pole Miniature Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
7/24/20
Refurbished Circuit Breaker works great!
They had it here fast, exactly as described and worked!
C
Christopher
Reviewing
Square D XO220 - 20A 2 Pole Miniature Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
6/17/20
Great!!
Product was as described and packed very well.
C
Christopher
Reviewing
Square D XO115 - 15A 1 Pole Miniature Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
8/23/19
Square 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
TB
Terry B.
Reviewing
Square D XO115 - 15A 1 Pole Miniature Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
11/11/18
Online 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.