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Description
300Amp Circuit Breaker - 3 Pack300Amp Circuit Breaker Pack of 3 Key Features Current Rating: 300 Amps Voltage Range: DC 12V 48V Trip Mechanism: Thermal Reset Type: Manual push button reset switch; also functions as a master disconnect Housing: High temperature rated, water resistant enclosure Terminals: #10 32 stainless steel threaded studs Mounting: Surface mount with two mounting holes Quantity: Includes three individual 300A circuit breakers Replaces Cross Reference Part Numbers
300Amp Circuit Breaker - Pack of 3
Key Features
- Current Rating: 300 Amps
- Voltage Range: DC 12V - 48V
- Trip Mechanism: Thermal
- Reset Type: Manual push-button reset switch; also functions as a master disconnect
- Housing: High-temperature rated, water-resistant enclosure
- Terminals: #10-32 stainless steel threaded studs
- Mounting: Surface mount with two mounting holes
- Quantity: Includes three individual 300A circuit breakers
Replaces / Cross-Reference Part Numbers
- Can be used as a direct replacement for Bussmann CB285-300 and CB185-300
- Interchangeable with Blue Sea Systems 7189 and 187-Series 300A breakers
- Replaces similar style surface-mount, manual reset breakers used in automotive and marine applications
Compatibility & Fitment
- Designed for high-current DC electrical systems
- Automotive: Car audio amplifiers, secondary battery systems
- Marine: Trolling motors, anchor winches, bow thrusters
- Recreational Vehicles (RV): Inverter connections, battery banks, solar charge controllers
- Industrial: Heavy equipment, DC motor circuits
When to Replace
- Existing breaker fails to trip during an overcurrent or short-circuit event
- Breaker trips repeatedly under a known, safe load (nuisance tripping)
- The manual reset lever or button is physically broken or will not stay engaged
- Visible signs of heat damage, melting, or cracks in the housing
- Terminals are heavily corroded, preventing a secure electrical connection
Installation Tips
- Disconnect the main power source (battery negative terminal) before beginning installation
- Install the breaker as close to the power source as possible for maximum protection
- Use correct wire gauge (AWG) rated for 300A to prevent wire overheating
- Ensure all cable lug connections are clean and torqued securely to the studs
- Mount in a location that provides protection from direct, high-pressure water spray and excessive engine heat
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
A Beautiful Timepiece at an Awesome Price!!
Color: Grey, Color: Grey
I have lusted after this watch for four months. I first tried on a similar model (stainless steel band with a green face) in a local jewelry shop (Spitz Jewlers, Walnut Creek, CA, USA). It was "love at first sight," even if I didn't love the white lines on the face from 12-6 and 3-9. At the time, the MSRP was $775.
The MSRP has since increased to $795. But I bought this beauty on Amazon.com for only $524.99; after applying the cash-back from my Prime credit card, this watch costs only $498.75. This was "the offer that I could not refuse," to quote from "The Godfather."
Accuracy could be better: after only a few days, it is now 7 seconds behind my phone (to which I set my new watch). But I don't really care about that all that much. This is why I rated "accuracy" at 4 stars, but my overall review is 5 stars.
My video shows the date changing suddenly at 11:59:59pm, just how I want it; in another photo, you can see that my Seiko changes the date more slowly, which I do not like.
This watch is absolutely phenomenally beautiful. If you're on the fence over whether to make this purchase, then I would say "go for it!" You will not find a prettier, more accurate watch at a lower price in ANY store in the entire USA.
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Reviewed in the United States on April 28, 2023
★★★★★ 4
Classy and sporty. Great value!
Color: Grey, Color: Grey
Excellent watch for the price. Looks sporty and dressy. More towards dress watch. Blue is dynamic. Strongly recommend blue for sporty feel. I was thinking of aqua terra. This come close to it with a price less than what i would have paid my state tax for omega aqua terra. My only concern is bracelet which i feel kind of OK. Better bracelet design would have made this watch much superior. 21 lug width is awful. Other than that, nothing to complain.
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Reviewed in the United States on July 13, 2020
★★★★★ 5
Stunning Gentleman's Watch
Color: Grey
This is my second Tissot watch. It's quite stunning in person. The online photos don't do it justice. It has the look and feel of a much more expensive gentleman's watch which makes this purchase a great bargain. Tissot is a great reliable Swiss made watch brand. My first Tissot watch which is probably more than 20 years old still runs great. Very pleased with this purchase.
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Reviewed in the United States on October 16, 2025
★★★★★ 5
Good Tissot Watch
Color: Grey
Arrived on time, in its original box, include a 2 year international warranty, into the box include a book with the Tissot brand history in Switzerland. Algo a second book with a whole catalog of Tissot watches men and women.
The watch looks better when you put in on your wrist. The “naval” blue really gives the clock a classy look. The stainless steel workmanship is really good, the metal is bright and perfectly polished. The metal wristband quality is very good, did not have any problem to adjust the size , I went to my preferred clock workshop for this job, they extracted a few pieces of the band to fit to my small wrist size. Have to get used to the butterfly latch, but after a few days, now I learned to open and close it without any effort. The clock it’s very accurate, I’ve been using my Tissot for near a month and it just increased a few seconds per week. I do the setup and check accuracy with my pc clock. In short, It”s a good value watch, nice, good looking, accurate.
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Reviewed in the United States on August 1, 2021
★★★★★ 5
Durable
Style: Bi-fold
My man loves it. He works construction and it has held up well so far. Carhartt does good work. Looks exactly like the picture, well made.
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Reviewed in the United States on April 19, 2026
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