Eaton / Cutler-Hammer CH320SW Miniature Circuit Breaker
- 20A
- 3 Pole
- Plug-On
Eaton / Cutler-Hammer
CH320SW
Miniature Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
CH320SW
Quantity
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Eaton / Cutler-Hammer CH320SW - 20A 3 Pole Miniature Circuit Breaker
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Description
Engineered for specialized applications like gas station fuel dispensers, this 20A device safely disconnects both ungrounded conductors and the neutral simultaneously. The switching neutral functionality ensures complete isolation of the circuit during maintenance or emergency shutdowns. This unit mounts into standard 3/4-inch Eaton CH load centers, occupying three pole spaces.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | CH320SW |
| Series | CH |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | Eaton CH Load Centers |
| 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 | Shunt Trip |
|---|---|
| Standards | UL 489 |
| Approval | UL |
| Temp Rating | 60C to 75C |
| Construction Features | Switching Neutral, Common Trip |
| Special Features | Switching Neutral |
Product FAQs
6 answersWhat does the SW suffix indicate on the CH320SW breaker?
The SW suffix designates this as a neutral switching circuit breaker. It is designed to simultaneously disconnect the neutral conductor along with the ungrounded hot conductors.
What are the typical applications for a neutral switching breaker?
Neutral switching breakers are primarily used for fuel dispensing equipment, such as gas pumps. The National Electrical Code (NEC Article 514) requires the neutral to be disconnected simultaneously with the hot legs to ensure safety during maintenance.
How many hot and neutral legs does this 3-pole breaker switch?
The CH320SW switches two hot legs and one neutral conductor, occupying three standard 3/4-inch spaces in the load center. This configuration is used for 120/240V single-phase circuits that require neutral switching.
Can I install the CH320SW in an Eaton BR series load center?
No, this breaker is exclusively designed for Eaton and Cutler-Hammer CH series load centers. Its 3/4-inch plug-on footprint is not compatible with 1-inch BR series panels.
Does the CH320SW include a factory-installed shunt trip?
No, this standard model does not include a shunt trip. Eaton breakers equipped with a shunt trip feature an ST suffix, such as CH320SWST, and require one additional panel space for installation.
How does the common trip function operate on the CH320SW?
The internal common trip mechanism ensures that if any single pole detects an overload or short circuit, all three poles will trip simultaneously. This guarantees that both hot legs and the neutral are completely disconnected from the circuit at the same time.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 74 reviews.
Total 5 star reviews: 72 Total 4 star reviews: 2 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
Reviews Summary
Generated by AI from 100 most recent customer reviews
Last updated 8/5/25
Customers say these electrical breakers are readily available when hard to find elsewhere. Many reviews mention fast shipping and accurate order fulfillment. Common feedback includes competitive pricing and proper packaging. Reviews note the products fit correctly and match specifications. While most highlight quick delivery times, some mention occasional supply delays. The ordering process receives praise for its simplicity.
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Rating
74 reviews
- JGJason G.Verified BuyerReviewingEaton / Cutler-Hammer CH220GFI - 20A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/24/26It was as advertised
It was delivered on time and works.
- LGlarry g.Verified BuyerReviewingEaton / Cutler-Hammer CH335 - 35A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/20/26good
Great part quick shipping
- PLPhid L.Verified BuyerReviewingEaton / Cutler-Hammer CH230GFI - 30A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/7/26EFFICIENT
BREAKER ARRIVED QUICKLY. WELL PACKAGED FOR PROTECTION.
- CSChristine S.Verified BuyerReviewingEaton / Cutler-Hammer CH2100-LONG - 100A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars5/18/26Got a great refurbished breaker - saved a $6500 Service Replacement
When our main breaker frizzed out, the option we were presented with was replacing the entire panel and service due to the type and part - no longer produced for replacement parts. It would be a $6500 replacement.
We'll likely have to do it at some point but, for now, the replacement breaker we were able to source from Superbreakers (with a $25 warranty) was $5900 less expensive. installation ran a few hundred dollars and the tech said the part looked to be in excellent condition and was prepped for install as he would have hoped.
Very thankful for SuperBreakers!
- MKMichael K.Verified BuyerReviewingEaton / Cutler-Hammer CH330 - 30A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars4/22/26Happy Customer
Arrived as described and in the timeframe