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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16
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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
4.8 ★★★★★
Based on 28 reviews
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Product Reviews
★★★★★ 3
Cost associated either app.
Color: Pink
Not easy instructions and didn’t know there would be a membership cost for app.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 6, 2026
★★★★★ 1
Average quality, not as premium as expected
Color: Beige
Before buying, I thought it would be a thick, glossy satin ribbon. After receiving it, I found the material is rather thin and the texture feels quite ordinary. When used for gift wrapping, it looks a bit cheap and doesn’t match the effect shown in the pictures.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 26, 2025
★★★★★ 1
Print quality is inconsistent
Color: Pink
Some labels come out okay, others look blurry or faded, especially with smaller fonts. For decorative ribbons, details matter, and this just isn’t reliable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 26, 2025
★★★★★ 1
Edges fray easily after cutting
Color: Beige
After cutting the ribbon, the edges tend to fray quite easily. This makes it less attractive when tying bows or using it for decoration, and it requires extra handling, which is not very convenient.
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Reviewed in the United States on December 26, 2025
★★★★★ 1
Inconsistent printing quality
Color: Beige
Sometimes the printed text has unclear edges, especially with small fonts, which look a bit blurry. When used for delicate decorations, it doesn’t look very professional.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 26, 2025
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