Part of the classic XO series, this 30-amp, two-pole breaker provides essential overcurrent protection for residential applications. It is commonly used to feed 240V circuits such as electric water heaters or smaller dryers. This unit installs into older Square D and Cutler-Hammer XO load centers, offering a seamless fit for aging electrical systems. It accepts 14-8 AWG wiring. Rated for 10 kAIC at 120/240VAC, the XO230 utilizes proven thermal-magnetic trip technology.
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
Accessories
XO230-R
Standards
UL 489
Approval
UL
Temp Rating
40C
Construction Features
Common Trip
Product FAQs
7 answers
Which load centers accept the XO230 circuit breaker?
This breaker is designed exclusively for legacy Square D XO and Cutler-Hammer XO load centers. It will not fit modern Square D QO or Homeline panels due to its unique bus bar clip design.
What wire sizes are accepted by the terminals on the XO230?
The screw and clamp terminals on this breaker accept wiring from 14 AWG up to 8 AWG.
Can I use a modern Square D QO breaker to replace an XO230?
No. The XO series utilizes a specific plug-on mounting design that connects to rounded bus bars. It is physically incompatible with modern QO or Homeline load centers.
What types of loads is a 30A 2-pole XO breaker typically used for?
A 30A, 2-pole breaker is commonly used to protect 240V residential circuits, such as electric water heaters, smaller electric dryers, or dedicated 240V shop equipment.
Are Cutler-Hammer XO breakers and Square D XO breakers interchangeable?
Yes. Both Square D and Cutler-Hammer manufactured XO load centers and breakers. The XO230 will fit and function correctly in either brand's XO-style panel.
How does the XO230 mount into the panel?
It features a plug-on mounting style specific to XO frames, which connects to the rounded bus bars found in vintage Square D and Cutler-Hammer XO load centers.
Does the XO230 provide GFCI or AFCI protection?
No. This is a standard thermal-magnetic breaker providing only overload and short-circuit protection. It does not include ground-fault or arc-fault circuitry.
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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.