Eaton / Challenger CH3080ST Miniature Circuit Breaker
- 80A
- 3 Pole
- Plug-On
Quantity
Eaton / Challenger CH3080ST - 80A 3 Pole Miniature Circuit Breaker
New
Quantity
Description
Built for specialized commercial and residential applications, this 80A three-pole unit integrates standard overcurrent defense with remote operation capabilities. The 3/4-inch format mounts into Eaton and Cutler-Hammer Type CH load centers. It requires no adapters, ensuring a seamless fit for legacy panelboards. A factory-installed shunt trip mechanism enables remote disconnection, while the 10kAIC rating and common trip design ensure reliable performance.Specifications
| Brand | Eaton / Challenger |
|---|---|
| Part Number | CH3080ST |
| Series | CH |
| Amperage | 80A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | CH |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | Type CH Load Centers |
| Wire Gauge | 10-1/0 AWG (Cu/Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 10 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment, Handle Lock |
|---|---|
| Accessories | Shunt Trip |
| Standards | UL 489 |
| Approval | CSA, UL |
| Temp Rating | 60C to 75C |
| Construction Features | Common Trip, HACR Rated |
Product FAQs
6 answersCan I use the Eaton CH3080ST to replace an older Cutler-Hammer or Challenger breaker with the same part number?
Yes. Eaton acquired both the Cutler-Hammer and Challenger brands. The CH3080ST is the exact same component and serves as a direct, manufacturer-approved replacement for older breakers bearing those legacy brand names.
What function does the ST suffix provide on this circuit breaker?
The ST suffix indicates a factory-installed 120V shunt trip mechanism. This allows the breaker to be opened remotely by applying a 120V AC control signal to the shunt trip coil, which is commonly used for emergency stop buttons or fire alarm system integration.
How much panel space is required to mount this shunt trip breaker?
Because of the factory-installed shunt trip mechanism, this breaker requires one additional 3/4-inch pole space in the load center. A standard 3-pole CH breaker takes three spaces, but the CH3080ST requires four total spaces.
Will this breaker fit in an Eaton BR series load center?
No. The CH3080ST features a 3/4-inch plug-on design specific to Type CH load centers. It will not fit in Eaton BR, Square D, Siemens, or GE panels.
What are the acceptable operating temperatures for the wire conductors connected to this breaker?
The box lug terminals are rated for use with either 60°C or 75°C copper or aluminum wiring.
Does this breaker provide common trip functionality across all three poles?
Yes. It features an internal common trip connection that ensures all three poles open simultaneously during an overload or short circuit, preventing single-phasing of connected three-phase equipment.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 76 reviews.
- EKEdward K.Verified BuyerReviewingEaton / Cutler-Hammer CHFP120DF - 20A Dual Function Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/28/26Eaton residential dual function 20amp
I am hopeful this fairly new arc monitor circuit breaker idea is going to have a more longevity future. Founder Fred Kiko was an amazing man. Always room for safety inventions.
- ELEDUARDO L.Verified BuyerReviewingEaton / Cutler-Hammer CH120AF - 20A AFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/23/26Breker replacement
Work perfectly.
- 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.