The 6 Best 300 Amp Main Breaker Load Centers (2022 reviews)

300 amp main breaker load centers
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If you are looking for collection of best 300 amp main breaker load centers, This page is just for you.

Our review process:

Our Top Picks:

Best Overall:
Buy: Schneider Electric Load Center
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Best With Main Breaker:
Buy: Siemens 300 Amp Main Breaker Load Center
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Best With Disconnect:
Buy: Leviton 300 Amp Main Breaker Load Center
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Best With Meter:
Buy: Siemens Load Center
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Best Thoughtful Design:
Buy: Leviton 300 Amp Main Breaker Load Center
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Best For Single Phase:
Buy: Schneider Electric 300 Amp Main Breaker Load Center
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Best Overall: Schneider Electric Load Center

Schneider Electric Load Center
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The Schneider Electric Load Center is capable of outshining several other centers featured in this list in overall features. The schneider electric load center is simple to wire, it is electrical and has a great design. Make sure this fits by entering your model number. Further, it is easy to wire and has a simple design.

Most importantly, the schneider electric load center includes a factory-installed indoor cover.

Most buyers opine that the center is a lot of boxes for the money. Also, they also found that the center is good for a subpanel in a garage. Further, a few strongly agree that the center is a standard box with a main disconnect, and has the ability to use plug in neutral breakers.

Top Customer Quotes:
  • Single phase; rated 120/240 vac and 22,000 air short circuit current rating.
  • It works great, it worked perfectly and has a good design.
  • Qo, 100a main breaker installed load center.
  • Overhead/underground feed simply by rotating the device before installing.

Best With Main Breaker: Siemens 300 Amp Main Breaker Load Center

Siemens 300 Amp Main Breaker Load Center
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The Siemens 300 Amp Main Breaker Load Center should be able to handle its purpose and duties with ease. Further, the center includes 2 factories installed ground bars. Make sure this fits by entering your model number. Finally, the Siemens 300 ampmain breakerload center features Siemens plug-on neutral, for simple quick installation, It is spacious with over 4 in.

Most customers agree that the center is not the place to pinch pennies with a diary. And, a few also found that the center can be done with either an automatic switch or a manual switch. In addition, they strongly agree that note: if this would be a suitable replacement for existing material without knowing the part. Therefore, buyers were eager to recommend it to friends and families.

Top Customer Quotes:
  • This is raintite with a breaker cover and outer hinged cover.
  • This is outside of your skill set.
  • This is used to feed loads outside of the home.
  • This comes with a factory installed 200 ampmain breaker.

Best With Disconnect: Leviton 300 Amp Main Breaker Load Center

Leviton 300 Amp Main Breaker Load Center
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Not everyone likes to purchase a center for their regular usage, but the Leviton 300 Amp Main Breaker Load Center would be an anomoly. In addition, the center is designed with a stylish appearance, comes with a white powder coat, It is electrical and has a good design. Make sure this fits by entering your model number. Lastly, the leviton 300 amp mainbreaker load center is a standard feature on all leviton load centers.

Most buyers quickly discover that the center is new construction. Almost all your breakers have to be arc fault protected and or gfi protected. Furthermore, a few also found that the center is easy to install and the snap on breakers make the process much more simpler. In addition, they say that the center does accept leviton smart breakers. In conclusion, the tone of buyers is very positive and we believe that the center suits the purpose.

Why We Like This:
  • Quality materials – copper bus is a standard feature on all leviton load centers.
  • Notches stamped into the enclosure for cable ties promote secure and neat wiring.
  • Good brand reputation.

Best With Meter: Siemens Load Center

Siemens Load Center
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If you are looking for a reliable center for your regular use, you cannot go wrong with the Siemens load center. Further, it features siemens plug-on neutral, for simple quick installation, It is spacious at over 4 in. Make sure this fits by entering your model number. Lastly, the Siemens loadcenter includes 1 factory installed ground bar.

Almost all customers opine that the center comes with one ground bar.

Why We Like This:
  • Nema type 1 enclosure for indoor use.
  • Sn series plug-on neutral loadcenter includes 1 factory installed ground bar.
  • New and hot releases.

Best Thoughtful Design: Leviton 300 Amp Main Breaker Load Center

Leviton 300 Amp Main Breaker Load Center
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The Leviton 300 Amp Main Breaker Load Center is satisfactory and appropriate and fits well with your daily purpose. Also, the center is designed with a stylish appearance, It is coated with a white powder coat and has a thoughtful design. Notches stamped into the enclosure for cable ties promote secure and neat wiring. Most importantly, the leviton 300amp mainbreaker load center is a standard feature on all leviton load centers.

One customer says - "Once you have the panel installed and go to install the cover, you'll find the cover uses painted screws. ". They say that this panel is part of the leviton smart load center.

Why We Like This:
  • Quality materials – copper bus is a standard feature on all leviton load centers.
  • Good investment for the long term.

Best For Single Phase: Schneider Electric 300 Amp Main Breaker Load Center

Schneider Electric 300 Amp Main Breaker Load Center
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The Schneider Electric 300 Amp Main Breaker Load Center's high-end materials make sure that it ages well with use. In addition, this includes a pk15gta ground bar, cover sold separately. Engineered for a quick plug-on neutral connection on every circuit, fewer connections, faster installation and no pigtails frees up gutter space. Most importantly, the schneider electric 300amp main breakerload center is made for single phase and it is of great quality.

Most buyers opine that the center is designed for 120/240volt ac current. In addition, they strongly agree that the center comes with a panel and should have a square d p/n. Obviously, this product passed the test and had very satisfied buyers eager to share their experience.

Why We Like This:
  • Single phase, rated 120/240 vac and 22,000 air short circuit current rating.
  • Overhead/underground feed simply by rotating the device before installing.
  • Accommodates plug-on secondary surge arrestor (sold separately).