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Eaton / Cutler-Hammer BR330ST Miniature Circuit Breaker
- 30A
- 3 Pole
- Plug-On
Eaton / Cutler-Hammer
BR330ST
Miniature Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
BR330ST
Quantity
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Eaton / Cutler-Hammer BR330ST - 30A 3 Pole Miniature Circuit Breaker
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Description
Designed with an integrated shunt trip, the Eaton BR330ST allows for remote circuit disconnection. This 3-pole, 30A miniature breaker provides robust thermal-magnetic protection for commercial and industrial setups. The plug-on configuration installs easily into compatible Eaton Type BR load centers. It accommodates the factory-installed shunt trip accessory for enhanced control. Operating at 240VAC with a 10kAIC rating, the breaker features a quick-make mechanism and is HACR rated.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | BR330ST |
| Series | BR |
| Amperage | 30A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | BR |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | Eaton Type BR Load Centers |
| Wire Gauge | 14-4 AWG (Cu/Al) |
| Max Wire | 4 AWG |
| Min Wire | 14 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 | Federal Specification W-C375, UL 489 |
| Approval | UL |
| Temp Rating | 60C to 75C |
| Construction Features | Common Trip, HACR Rated, Rejection Tab, Quick-Make/Quick-Break |
Product FAQs
5 answersWhat load centers are compatible with the BR330ST circuit breaker?
This breaker is designed for use in modern Eaton Type BR load centers. It is also UL-listed as a direct replacement for legacy Westinghouse, Bryant, and Challenger Type BR panels.
What does the "ST" suffix indicate on this Eaton breaker?
The "ST" designates a factory-installed shunt trip accessory. This allows the breaker to be tripped remotely by applying a voltage signal to the shunt trip coil, which is commonly used for emergency stops or automated load shedding.
How does the BR330ST mount into the load center?
It utilizes a plug-on connection type, snapping directly onto the bus bar of a Type BR load center without the need for bolt-on hardware. As a 3-pole breaker, it requires three full 1-inch spaces in the panel.
What type of protection does the thermal-magnetic trip unit provide?
The fixed thermal-magnetic trip unit includes long-time (L) and instantaneous (I) functions. The thermal component protects against sustained overloads, while the magnetic component provides immediate tripping during short circuits.
Is the Eaton BR330ST HACR rated?
Yes, this breaker is HACR rated, making it suitable for use with heating, air conditioning, and refrigeration equipment that requires this specific safety designation.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 70 reviews.
Reviews Summary
Generated by AI from 96 most recent customer reviews
Last updated 8/15/25
Customers say these circuit breakers arrive quickly and fit their needs perfectly. Many reviews mention competitive pricing and reliable availability, particularly for hard-to-find models. The products consistently meet expectations for installation and functionality. Reviews frequently note the precise fit and immediate operation of these breakers. Some users appreciate the option of both new and refurbished units.
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Rating
70 reviews
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delivered on time as described
- MPMichael P.Verified BuyerReviewingEaton / Cutler-Hammer BR1520 - 15/20A Tandem Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/5/26An excellent business
In this day and age it can be a challenge at times finding a reputable business that fills your order correctly and at the right price and without delay. I am very pleased with your service. Thank you.